Shanghai Kou Qiang Yi Xue = Shanghai Journal Of Stomatology[JOURNAL]
Sun
200 papers
[Investigation and analysis of oral health status of children with autism and their parents' cognition].
Tan JY, Li L, Yang YE … +2 more , Wang W, Wang S
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478398
PURPOSE: To understand the cognitive level of parents of children with autism towards their oral health behaviors and oral health care, and to provide assistance in developing better oral health plans for children with a...
PURPOSE: To understand the cognitive level of parents of children with autism towards their oral health behaviors and oral health care, and to provide assistance in developing better oral health plans for children with autism. METHODS: Totally 117 children and parents with autism who visited our hospital from January to December 2018 were selected as the experimental group,while 121 non-autistic children during the same period were selected as the control group, the children's oral hygiene was checked. Questionnaire survey was conducted on the oral health behaviors of pediatric patients, including daily brushing frequency, use of toothpaste, assistance from parents in brushing teeth, and frequency of snacking. At the same time, standardized measures were adopted to evaluate the oral health knowledge of parents, obtain their level of understanding oral health-related knowledge, and record the basic situation of parents. SPSS 21.0 software package was used for statistical analysis. RESULTS: The proportion of children with autism who have dental caries and periodontal health problems was relatively high, at 74.36% and 52.14%, respectively. Most pediatric patients had poor oral health behaviors, with a low proportion of brushing teeth ≥2 times per day and consistently using toothpaste, accounting for 17.09% and 13.68%, respectively. In addition, the score of oral health knowledge of parents of children in the experimental group [(6.40±2.55)] was lower than those in the control group [(6.95±2.47)], but there was no significant difference (P＞0.05). 93.16% of the children in the experimental group were taken care of full-time by their mother (72.65%) or father (20.51%), and most of the patients's income was not high. The main caregivers and their education level, family income in the control group were significantly different from those in the experimental group (P＜0.05). Factors affecting the oral health of autism patients included brushing habits, primary caregivers and parents' highest level of education. CONCLUSIONS: Parents of autistic children have a poor understanding of their children's oral health behaviors, as well as health care. Therefore, education of oral health towards the parents of children with autism should be strengthened with the aim of improving their awareness of oral health and jointly maintaining their health.
[Effect of minimally invasive circumferential resection on inflammatory response and alveolar crest resorption in patients with dental defect implantation].
Yao XF, Lan B, Ji Y … +1 more , Zhou XJ
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478397
PURPOSE: To explore the impact of minimally invasive circumferential resection on inflammatory response and alveolar crest resorption in patients with dental defect implantation. METHODS: A total of 198 patients who rece...
PURPOSE: To explore the impact of minimally invasive circumferential resection on inflammatory response and alveolar crest resorption in patients with dental defect implantation. METHODS: A total of 198 patients who received dental implantation in Lishui Hospital of Traditional Chinese Medicine from June 2021 to June 2023 were selected and divided into minimally invasive group (n=100) and traditional group (n=98) according to treatment methods. Minimally invasive surgery was performed in the minimally invasive group and traditional flap surgery was performed in the traditional group.Surgical related indicators, levels of inflammatory factors, pain mediators, alveolar crest bone resorption, implant loosening, quality of life and complication rates were compared between the two groups. SPSS 27.0 software package was used for statistical analysis. RESULTS: The surgery time, postoperative VAS scores and postoperative pain reaction time in the minimally invasive group were significantly lower than those in the traditional group(P＜0.05). In the minimally invasive group, the concentrations of IL-8, TNF-α, INF-γ,serum amyloid A(SAA), substance P(SP), calcitonin gene-related peptide(CGRP) and 5-hydroxytryptamine(5-HT) were significantly lower than the traditional group (P＜0.05). The amount of alveolar crest bone absorption in minimally invasive group was significantly lower than that in the traditional group(P＜0.05). There was no significant differences in implant loosening and retention rates between the two groups(P＞0.05). OHIP-14 scores across all dimensions in the minimally invasive group were significantly lower than in the traditional group (P＜0.05). There was no significant difference in complication rate between the minimally invasive group and the traditional group (P＜0.05). CONCLUSIONS: Compared with the traditional surgery, minimally invasive circumferential surgery has better performance in reducing operation time, postoperative inflammatory factors and pain mediators, alveolar crest and parietal bone absorption and improving oral health, which can be widely used in dental implantation.
[Risk factors for mesioangular and vertical impactions of mandibular third molars based on logistic regression analysis].
Wang R, Zou HR, Liu Q … +1 more , Chang PH
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478396
PURPOSE: To explore the risk factors for mesioangular and vertical impactions of the mandibular third molars and to construct a predictive model based on logistic regression analysis. METHODS: Clinical data of 243 mandib...
PURPOSE: To explore the risk factors for mesioangular and vertical impactions of the mandibular third molars and to construct a predictive model based on logistic regression analysis. METHODS: Clinical data of 243 mandibular third molars collected from June 2021 to December 2023 at Tianjin Stomatology Hospital were classified into the eruption group and the impaction group, with the latter including mesioangular and vertical unilateral impactions. The clinical data were subjected to univariate analysis to screen for statistically significant factors, followed by multivariate analysis using logistic regression to further delineate risk factors for mandibular third molar impaction, with the construction of a nomogram for prediction.SPSS 27.0 software package was used for statistical analysis. RESULTS: Totally 243 mandibular third molars were included, and 75 (30.86%) were in the eruption group and 168 (69.14%) in the impaction group. No significant difference was found between the groups regarding age, gender, number of tooth roots, Co-Go, Co-Cop, W2, W3, W4 and L (P＞0.05). Significant differences were observed between the eruption and impaction group concerning Nolla, L-6 missing, L-E missing, Co-Pog, Co-Go/Co-Pog, L6-MP, α and W1(P＜0.05). Multivariate regression analysis revealed that Nolla, absence of L-6, absence of L-E, Co-Pog, Co-Go/Co-Pog, L6-MP, α and W1 were independent risk factors for mesioangular and vertical impactions of the mandibular third molars (P＜0.05). The construction of nomogram demonstrated high predictive accuracy. Analysis of the receiver operating characteristic curve(ROC) indicated that the area under the curve(AUC) for the joint prediction of mesial and vertical impaction of the mandibular third molar by independent risk factors was 0.924, with a 95%CI of 0.887 to 0.960. The sensitivity was reported to be 86.9%, and the specificity was 86.7%. CONCLUSIONS: Nolla, absence of L-6, absence of L-E, Co-Pog, Co-Go/Co-Pog, L6-MP, α and W1 are major risk factors affecting the impaction of mandibular third molars. The use of logistic regression analysis and nomograms can effectively predict the risk of impaction, providing a scientific basis for clinical treatment.
[Benign deep lobe parotid tumors: classification in association with localization and surgical approaches].
Ma XH, Xu J, Xia FF … +2 more , Fang TL, Sun ZP
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478395
PURPOSE: Benign deep lobe parotid tumors(BDLPT) exhibit a wide range of clinical and imaging features, which closely correlated with the selection of appropriate surgical approaches. This study was aimed to explore varia...
PURPOSE: Benign deep lobe parotid tumors(BDLPT) exhibit a wide range of clinical and imaging features, which closely correlated with the selection of appropriate surgical approaches. This study was aimed to explore variations in surgical management. METHODS: Seventy-five patients with primary BDLPT who underwent surgery in Peking University School and Hospital of Stomatology from August 2014 to August 2020 were included. The imaging data of all cases were retrospectively evaluated. BDLPTs were divided into four types according to the anatomical relationship between the tumor and various structures, and the surgical treatment of each type of tumor was studied. SPSS 24.0 software package was used for statistical analysis. RESULTS: TypeⅠBDLPT(14/75, 18.7%) was located entirely medial to the ramus and the stylomandibular space, with growth extending towards the parapharyngeal space. Type Ⅱ BDLPT(19/75, 25.3%) resided within the retromandibular space, bounded by the ramus, stylomandibular space, mastoid, and retromandibular vein. Type Ⅲ BDLPT(27/75, 36.0%) exhibited an expansive growth pattern, extending from the retromandibular vein to the parapharyngeal space while traversing the stylomandibular space. Type Ⅳ BDLPT(15/75, 20%) was situated inferior to the ear lobe, deep to the facial nerve and retromandibular vein. Transmandibular approach was predominantly employed in type I cases (10/14). Type Ⅲ cases utilized transparotid (14 cases), transmandibular(11 cases), and combined transparotid-transmandibular (2 cases) approaches. Type Ⅱ and Ⅳ cases involved transparotid approaches with concurrent parotidectomy. CONCLUSIONS: The classification of BDLPT offers valuable insights and practical guidance for preoperative treatment planning.
[Facial soft tissue changes after full-arch implant-supported fixed prostheses restoration in patients with edentulous maxilla].
Zhang Y, Tao XR, Wang F … +2 more , Yu DD, Wu YQ
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478394
PURPOSE: To investigate the changes of nasolabial soft tissues before and after full-arch implant supported fixed restoration in maxillary edentulous patients and the influencing factors of the changes. METHODS: Fifty pa...
PURPOSE: To investigate the changes of nasolabial soft tissues before and after full-arch implant supported fixed restoration in maxillary edentulous patients and the influencing factors of the changes. METHODS: Fifty patients who underwent full-arch implant fixed restoration in the Department of Second Dental Center of Shanghai Ninth People's Hospital from January 2016 to July 2023 were selected. Patient's medical history, CBCT, and three-dimensional facial scan data were collected before and after restoration. Paired t test or Wilcoxon signed-rank test were used to compare the changes in soft tissues before and after restoration. The correlation between changes and patient's basic information, implant protocol and residual bone parameters were analyzed using bivariate correlation analysis. Akaike information criterion was used to select the multivariate linear regression model of each soft tissue index change. RESULTS: After implant fixed restoration, the upper lip height (sn-sto), the upper vermillion height (ls-sto), and the upper vermilion area (UVA) significantly increased (P＜0.01), while the distance from ls to the E-line (ls-E) significantly decreased (P＜0.01), the nasolabial angle (∠cm-sn-ls) significantly decreased (P＜0.01), and the cutaneous upper lip height(sn-ls) did not change significantly(P＞0.05). Except for sn-sto and sn-ls, the remaining soft tissue changes were positively correlated with age (P＜0.01). Other residual bone parameters, implant protocol, and gender were not significantly related to each soft tissue change. Multivariate stepwise regression analysis showed that each soft tissue change was broadly related to age and preoperative soft tissue condition, and partially related to bone morphology. CONCLUSIONS: The nasolabial soft tissues of maxillary edentulous patients change significantly after implant fixed restoration, mainly the expansion and protrusion of the red part of the lip. The changes in facial soft tissues are primarily related to the patient's age and pre-existing soft tissue condition, with older patients and those with more atrophic original soft tissue morphology observing more apparent improvements in fullness. The change in lip prominence is also related to the residual bone shape.
[Changes of soft tissue profile of maxillary edentulous patients with immediate denture].
Tao XR, Zhang Y, Zhang JY … +3 more , Wei LF, Nie P, Yu DD
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478393
PURPOSE: To compare the changes of soft tissue profile of maxillary edentulous patients before and immediately after implant restoration, as well as to investigate patient satisfaction with postoperative facial appearanc...
PURPOSE: To compare the changes of soft tissue profile of maxillary edentulous patients before and immediately after implant restoration, as well as to investigate patient satisfaction with postoperative facial appearance. METHODS: A total of 24 patients treated in Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine from January 2018 to December 2020 were selected, the medical history and positive lateral cephalometric film of the patients before and after restoration were collected. Preoperative facial scanning of the patients was performed using the portable 3D facial scanner to design the immediate transitional denture restoration and then perform implant surgery. The collected lateral cephalograms of patients before and after treatment were imported into the computer. The angle measurement items before and after implant immediate denture restoration were analyzed including nasolabial angle, prn'-sn'-ul'(Ls), n'-prn'-sn', N-prn-Pog, Z angle, H angle and line measurements including the distance of upper lip to the E-plane and Sn-Prn. The soft tissue angle and lines were measured by Dolphin Imaging 11.95. Postoperative patient satisfaction with facial appearance was surveyed via telephone questionnaire. SPSS 26.0 software package was used for data analysis. RESULTS: Before restoration of immediate denture, the nasolabial angle and the distance of upper lip to the E-plane of both male and female patients was significantly different from the standard value, and the Z angle of female patients was significantly different from the standard value. After immediate denture restoration, there was no significant difference in nasolabial angle and the distance of upper lip to the E-plane between male and female patients, but there was significant difference in H angle, and nasal tip angle in female patients. After immediate denture restoration, there was no significant difference between the nasolabial angle, H angle and the distance of upper lip to the E-plane in male and female patients after immediate denture restoration, while the soft tissue convexity and Z angle between male and female patients after immediate denture restoration were significantly different compared with the standard value of the attractive individuals. After completion of immediate denture restoration, compared to the edentulous state in maxillary implant treatment, significant changes were observed in nasolabial angle, Z angle, and H angle in patients. The survey of seven questions had a mean score above 3 points (scoring standard 1-5, with 5 being the highest), indicating high patient satisfaction with the appearance after immediate denture restoration. CONCLUSIONS: After immediate denture restoration, the profile of the patient's soft tissue can be improved immediately, and the patient's soft tissue profile can basically return to the normal level, and even meet the standards of beautiful people. It is necessary to guide clinicians to further optimize the function and shape of prostheses in combination with patients' subjective aesthetic demands and individual conditions when conducting implant immediate transition denture restoration.
[Analysis of polyetheretherketone framework on the stress distribution of implant-supported fixed maxillary prosthesis: 3-D finite element analysis].
Han XY, Ju YQ, Zhang LL … +1 more , Tian ZJ
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478392
PURPOSE: To analyze the stress distribution of polyetheretherketone framework of implant-supported fixed maxillary prosthesis by three-dimensional finite element method. METHODS: Three dimensional finite element model of...
PURPOSE: To analyze the stress distribution of polyetheretherketone framework of implant-supported fixed maxillary prosthesis by three-dimensional finite element method. METHODS: Three dimensional finite element model of implant-supported fixed maxillary prosthesis was established. Polyetheretherketone as framework material, resin, zirconia, PEEK, baked plastic and lithium silicate were used to make crown prosthesis as experimental group, pure titanium and monolithic zirconia prosthesis model was used as control group. The feasibility of PEEK framework was analyzed by loading 150N axially and obliquely on the first molar, and the maximum compressive stress, minimum tensile stress and von Mises principal stress of the framework, crown, screw, implant, cortical and cancellous bone were measured and compared. RESULTS: Under axially loading, the von Mises stress in the monolithic zirconia and lithium silicate crowns were 361 MPa and 295 MPa, while the stress in resin and PEEK crowns were 35 MPa and 37 MPa, respectively. The screw von Mises stress of the experimental group was 694-724 MPa, which was much higher than 61 MPa of the control group.The maximum and minimum stresses of the screw appeared in the resin crown and PEEK crown group. Under oblique loading,von Mises stress of the framework in the experimental group was lower than that in the control group, but the maximum stress appeared in the resin crown and PEEK crown. von Mises stresses of monolic zirconia and lithium disilicate crowns in the experimental group were higher than that of resin and PEEK crowns. von Mises stress of the implant in the experimental group was twice that of the control group. von Mises stress in screw of the experimental group was much higher than that of the control group, and the maximum stress was 22 times that of the control group. The stresses of cancellous bone and cortical bone in the experimental group were twice that of the control group, and the differences were larger than that under vertical loading. CONCLUSIONS: In order to reduce the stress of crowns,resin or PEEK materials are preferred to be used as the crown prosthesis when PEEK was framework of implant-supported fixed maxillary prosthesis. Reducing the cantilever and lateral force may avoid excessive stress in screw.
[Three-dimensional finite element analysis of different attachment designs for lateral incisors during inward retraction of upper anterior teeth in clear aligner].
Chen JC, Zhao ML, Cheng ZH … +2 more , Zou ZC, Liu X
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478391
PURPOSE: To investigate the biomechanical expression of different shapes of attachments on the maxillary anterior teeth during the lingual tooth movement process using clear aligners, providing new insights for orthodont...
PURPOSE: To investigate the biomechanical expression of different shapes of attachments on the maxillary anterior teeth during the lingual tooth movement process using clear aligners, providing new insights for orthodontists to improve the clinical design. METHODS: In this study, CBCT data were simulated using the three-dimensional finite element technique. Attachments of various shapes, including no attachment(A1), rectangular attachment(A2), wedge-shaped attachment(A3), and curved arc attachment(A4), were designed on the lateral incisors. Ansys software was employed to calculate the three-dimensional changes in the lateral incisors, dental arch, and clear aligners and the distribution of equivalent stress on the periodontal ligament(von Mises) under the same load conditions. RESULTS: The coronal displacement of the lateral incisors showed the following variations: A1＞A4＞A3＞A2. The sagittal displacement exhibited the following variations: A3＞A4＞A1＞A2. The vertical elongation demonstrated the following variations: A4＞A3＞ A1＞A2. The overall displacement of each dental arch displayed an arch-shaped trend. Different regions of the clear aligners exhibited variations in deformation. The von Mises distribution of the periodontal ligament in A1 and A2 group showed similarities, while A3 group exhibited stress concentration only in the lingual area of the root's one-third region. Group A4 experienced significantly higher stress in the cervical region compared to A1 and A2 group. CONCLUSIONS: Rectangular attachments and curved arc attachments possess advantages in coronal control, with rectangular attachments exhibiting the best control effect in vertical control. The area of attachment force and actual displacement efficiency do not have an absolute correlation, as the shape of the force-bearing surface can significantly affect its specific biomechanical expression.
[Preparation and efficacy evaluation of carboxymethyl chitosan/β-dextran composite gel for dry socket in rats treatment].
Zhou L, Wang H, Xu JB … +2 more , Zou ZC, Meng J
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478390
PURPOSE: To investigate the therapeutic efficacy of a new composite gel of carboxymethyl chitosan/β-dextran in rat dry socket model. METHODS: Carboxymethyl chitosan/oat β-dextran composite gel was prepared, its viscosity...
PURPOSE: To investigate the therapeutic efficacy of a new composite gel of carboxymethyl chitosan/β-dextran in rat dry socket model. METHODS: Carboxymethyl chitosan/oat β-dextran composite gel was prepared, its viscosity, appearance and shape, and stability in oral wet environment were investigated. Staphylococcus aureus was selected for in vitro inhibition test. Blank negative control group, carboxymethyl chitosan/oat β-dextran composite gel group, and iodoform gauze positive control group were established respectively, and the maxillary first molars were extracted to establish a dry socket model in SD rats, to preliminarily evaluate the healing effect of alveolar fossa wounds. The maxillary bone and gingival fixed decalcification were also taken and histopathologically observed for healing as well as immunofluorescence to detect differences in the expression of inflammatory factors between the groups. SPSS 19.0 software package was used for statistical analysis. RESULTS: The compound gel group had obvious antibacterial effect, which can effectively exert local anti-inflammatory and antibacterial efficacy. Compared with the blank control group, visual observation of wound healing, histopathological observation and immunofluorescence inflammatory factor labeling showed that the composite gel group had significant effect on inflammation inhibition and wound healing, which was comparable to the iodoform gauze group. CONCLUSIONS: Carboxymethyl chitosan/oat β-dextran composite gel has significant antibacterial and anti-inflammatory effects and can accelerate the healing of dry socket wounds in rats, which is expected to provide an efficient antibacterial and accelerated healing therapeutic measure for the treatment of clinical dry socket.
[Construction and validation of an immune prognostic risk model in oral squamous cell carcinoma].
Zhao J, Sui BY, Liu X … +1 more , Ruan M
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478389
PURPOSE: To analyze the immune-related core genes differentially expressed in oral squamous cell carcinoma(OSCC) and construct an immune-related prognostic risk model for OSCC patients. METHODS: Weighted gene co-expressi...
PURPOSE: To analyze the immune-related core genes differentially expressed in oral squamous cell carcinoma(OSCC) and construct an immune-related prognostic risk model for OSCC patients. METHODS: Weighted gene co-expression network analysis of RNA sequencing data from OSCC patients in the Cancer Genome Atlas (TCGA) database was conducted to identify immune-related modules and core genes. Core genes associated with immune prognosis were screened using univariate Cox regression analysis and survival analysis to construct an immune-related prognostic risk model for OSCC. The prognostic risk model's predictive ability was evaluated using Kaplan-Meier analysis, receiver operating characteristic curves, and external datasets from GSE41613. The expression of 8 immune prognostic core genes in tumor samples from OSCC patients was detected by real-time quantitative PCR assay(RT-qPCR), and the correlation between risk score and depth of invasion was assessed by calculating risk scores for OSCC patients. Statistical analysis was performed with SPSS 21.0 software package. RESULTS: Prognostic risk model for OSCC was successfully constructed based on 8 immune prognostic core genes(CSF2RA, CLEC4C, COL5A3, CTSG, EDNRA, GPC4, GUCY1A2, ANGPT2). The prognostic risk model demonstrated perfect predictive value validated using Kaplan-Meier analysis, receiver operating characteristic curve, and the GSE41613 dataset. The risk scores of OSCC patients calculated based on this model were positively correlated with the depth of invasion, indicating that the model have the ability to predict the potential risk of OSCC. CONCLUSIONS: An OSCC prognostic risk model is constructed based on the signatures of 8 immune prognostic core genes, which may effectively predict the prognosis of OSCC patients, providing an important reference for immune prevention of OSCC.
[Accuracy of tooth segmentation algorithm based on deep learning].
Zhang BJ, Cui ZM, Liu ZX … +7 more , Chen SY, Gu KJ, Li ST, Wu YQ, Shen DG, Shen DG, Zhu M
Shanghai Kou Qiang Yi Xue · 2024 Aug · PMID 39478388
PURPOSE: The established automatic AI tooth segmentation algorithm was used to achieve rapid and automatic tooth segmentation from CBCT images. The three-dimensional data obtained by oral scanning of real isolated teeth...
PURPOSE: The established automatic AI tooth segmentation algorithm was used to achieve rapid and automatic tooth segmentation from CBCT images. The three-dimensional data obtained by oral scanning of real isolated teeth were used as the gold standard to verify the accuracy of the algorithm. METHODS: Thirty sets of CBCT data and corresponding 59 isolated teeth were collected from Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. The three-dimensional tooth data in CBCT images were segmented by the algorithm. The digital information obtained by scanning the extracted teeth after processing was used as the gold standard. In order to compare the difference between the segmentation results and the scanning results of the algorithm. The Dice coefficient(Dice), sensitivity (Sen) and average symmetric surface distance (ASSD) were selected to evaluate the segmentation accuracy of the algorithm. The intra-class correlation coefficient(ICC) was used to evaluate the differences in length, area, and volume between the single tooth obtained by the AI system and the digital isolated tooth. Due to the existence of CBCT with different resolution, ANOVA was used to analyze the differences between groups with different resolution, and SNK method was used to compare them between two groups. SPSS 25.0 software package was used to analyze the data. RESULTS: After comparing the segmentation results with the in vitro dental scanning results, the average Dice value was (94.7±1.88)%, the average Sen was (95.8±2.02)%, and the average ASSD was (0.49±0.12) mm. By comparing the length, area and volume of a single tooth obtained by the digital isolated tooth and the AI system, the ICC values of the intra-group correlation coefficients were 0.734, 0.719 and 0.885, respectively. The single tooth divided by the AI system has a good consistency with the digital model in evaluating the length, area and volume, but the segmentation results were still different from the real situation in terms of specific values. The smaller the voxel of CBCT, the higher the resolution, the better the segmentation results. CONCLUSIONS: The CBCT tooth segmentation algorithm established in this study can accurately achieve the tooth segmentation of the whole dentition in CBCT at all resolutions. The improvement of CBCT resolution ratio can make the algorithm more accurate. Compared with the current segmentation algorithms, our algorithm has better performance. Compared with the real situation, there are still some differences, and the algorithm needs to be further improved and verified.
[Evaluation of the role of standardized periodontal probing training on the teaching of undergraduates using the Florida probe system].
Xu MX, Sun Q
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104354
PURPOSE: To evaluate the effect of standardized periodontal probing training on the teaching of periodontal clinical probing for undergraduates by using Florida probe system. METHODS: Twenty undergraduates who practiced...
PURPOSE: To evaluate the effect of standardized periodontal probing training on the teaching of periodontal clinical probing for undergraduates by using Florida probe system. METHODS: Twenty undergraduates who practiced in the Department of Periodontology of Changzhou Stomatological Hospital from May 2022 to November 2022 were selected as the study objects and randomly divided into two groups with 10 students in each group. The experimental group received standardized periodontal probing training, while the control group did not receive training. Two groups of students used the traditional probe and the Florida probe to probe the left and right half-mouth teeth of one patient. In addition, a periodontal specialist used Florida probe to conduct full oral examination of the same patient, and the results were compared with those of the two groups of students. SPSS 26.0 software package was used for statistical analysis of the obtained data. RESULTS: There was no significant difference of probing depth(PD) between undergraduates and periodontal specialist in the experimental group (P＞0.05), while there was significant difference in the control group (P＜0.05). In the control group, PD values in the anterior area were not statistically different from those of periodontal specialist (P＞0.05), while PD values in the posterior area were statistically different (P＜0.05). Both groups of patients reported that the Florida probe system was more comfortable. CONCLUSIONS: Standardized periodontal probing training is helpful to improve the clinical probing ability of undergraduates. The use of Florida probe system can not only evaluate the teaching effect, but also improve the comfort level of patients, which is worthy of further application in the teaching course of periodontal probing for undergraduates.
[Ultrasonographic features of Castleman disease in the head and neck: a report of 7 cases].
Zhou HH, Chen QQ, Yuan F … +3 more , Sun JJ, Tian Z, Xiong P
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104353
PURPOSE: To summarize the ultrasonographic features of head and neck Castleman disease (CD), and to clarify its diagnostic key points. METHODS: Seven patients with head and neck CD confirmed by histopathology were collec...
PURPOSE: To summarize the ultrasonographic features of head and neck Castleman disease (CD), and to clarify its diagnostic key points. METHODS: Seven patients with head and neck CD confirmed by histopathology were collected from Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. The clinical features and ultrasound findings of the patients were evaluated. RESULTS: Of the 7 patients (1 male and 6 females), the mean age at diagnosis was 31.4 years (7-60 years). All the cases were hyaline vascular type. On ultrasound, 3 lesions (42.9%) were located in the parotid gland, 4 lesions(57.1%) in the neck. All the lesions presented as a solitary, well-defined and solid mass without calcification. The echogenicity was markedly hypoechoic in 1 case(14.3%) and hypoechoic in 6 cases (85.7%). Of the 7 CD cases, 4 cases (57.1%) were heterogeneous masses with linear echogenic septa. All lesions had mixed pattern in vascularity on color Doppler sonography. CONCLUSIONS: Most CDs in the head and neck represent as a markedly hypoechoic or hypoechoic lesion with mixed pattern in vascularity. The neoplasm may be characterized by the presence of linear echogenic septa within the mass.
[Clincopathological analysis of 171 patients with osteochondroma and malignant transformation in maxillofacial bone].
Liu LM, Sun JJ, Qian JJ … +3 more , Zhang CY, Hu YH, Li J
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104352
PURPOSE: To investigate the clinical and pathological features of osteochondroma in maxillofacial region, and to summarize the clinicopathological features of rare osteochondroma malignant transformation in order to prov...
PURPOSE: To investigate the clinical and pathological features of osteochondroma in maxillofacial region, and to summarize the clinicopathological features of rare osteochondroma malignant transformation in order to provide clinical guidance. METHODS: From January 2018 to September 2023, a total of 171 patients with osteochondroma were retrospectively collected in Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. Their preoperative CT and clinicopathological features were analyzed. RESULTS: Of the 171 patients with osteochondroma in maxillofacial bone, 66%（113/171） were females and 34% were male. Their age ranged from 11-76 with an average age was 44 years old. Of the 171 cases, 95.3%（163/171）in mandible condyle, 4%(7/171) in mandible processus coronoideus, and 0.5%（1/171） in zygomatic arch. The imaging findings showed that the thickness of cartilaginous cap was less than 1 cm in 98%（159/161） cases with condyle lesions. Only 2 cases(2/171, 1.1%) had malignant transformation. One was diagnosed with secondary chondrosarcoma, another developed low-grade osteosarcoma. CONCLUSIONS: Osteochondroma in maxillofacial region mostly occurs in females, and most commonly located in condylar process, with a malignant change rate of 1.1%, which is similar to that of other parts of the body. Imaging findings have important guiding significance for the diagnosis of osteochondroma malignant change.
[A correlation study between the occlusal cant and temporomandibular joint space in patients with mandibular lateral deviation].
Li S, Xiao RR, Wang MF
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104351
PURPOSE: To investigate the correlation between the occlusal canting and the bilateral temporomandibular joint (TMJ) space in adult and juvenile mandibular deviation patients and study the mutual influence between the oc...
PURPOSE: To investigate the correlation between the occlusal canting and the bilateral temporomandibular joint (TMJ) space in adult and juvenile mandibular deviation patients and study the mutual influence between the occlusal canting and mandibular position, in order to provide references for clinical treatment. METHODS: CBCT data of mandibular deviation patients（20 adults，20 juveniles）were selected. Inivo5 Dental Anatomage software was used to reconstruct the structures. The occlusal cant and vertical height of the bilateral maxillary from canines to first molars were measured, and the vertical heights difference between the same teeth on both sides was calculated. The anterior, superior and posterior space of temporomandibular joint were measured respectively in both groups. Pearson correlation analysis between the occlusal canting and bilateral condylar space was carried out by using SPSS 17.0 software package. RESULTS: In the juvenile group, negative correlations were found between the occlusal cant and the superior TMJ space on the deviated side (P＜0.05). Negative correlation was found between the vertical height difference of bilateral canines and the anterior TMJ space on the deviated side in the juvenile group(P＜0.05). In the adult group, no significant correlation was observed among those correlated examination (P＞0.05). CONCLUSONS: The occlusal canting is moderately correlated with mandibular position in the early stage of mandibular deviation patients. Early treatment of mandibular deviation is of great importance in preventing its progression into severe skeletal malocclusion, and more attention should be paid on the correction of the canted frontal occlusion plane.
[Transverse characteristics of normodivergent patients in different sagittal skeletal patterns].
Yu ZH, Duan YG, Cui YT … +1 more , Tian YL
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104350
PURPOSE: This study aimed to measure and analyze the transverse indicators of normodivergent patients with different sagittal skeletal malocclusions, to explore the transverse characteristics of different sagittal skelet...
PURPOSE: This study aimed to measure and analyze the transverse indicators of normodivergent patients with different sagittal skeletal malocclusions, to explore the transverse characteristics of different sagittal skeletal malocclusions. METHODS: Lateral cephalograms and CBCT of 90 normodivergent patients with skeletal Class Ⅰ, Ⅱ and Ⅲ in their permanent dentition were collected. Dolphin software was applied to measure the widths of the basal bone, alveolar bone, dental arch and buccolingual inclination angle of the corresponding teeth in the maxillary and mandibular canine, premolar and molar areas. SPSS 22.0 software package was applied for statistical analysis of the data. RESULTS: The widths of the mandibular basal bone in canine, premolar and molar areas of skeletal Class Ⅲ were (27.15±2.74), (39.30±2.82) and (59.97±2.93) mm, respectively. The widths of the mandibular alveolar bone of skeletal Class Ⅲ were (25.38±1.78), (34.51±2.28) and (47.72±2.73) mm, respectively. The dental arch widths of the maxillary premolar and mandibular canine areas of skeletal Class Ⅲ were (48.70±2.35) and (30.69±2.31)mm, respectively. The above data of skeletal Class Ⅲ were significantly larger than those of skeletal Class Ⅰ and Ⅱ(P＜0.01). The dental arch widths of the maxillary canine, maxillary molar and mandibular molar areas of skeletal Class Ⅲ were (38.88±1.90), (59.51±3.40) and (56.01±2.86)mm, respectively, which were significantly larger than those of skeletal Class Ⅱ(P＜0.05). The maxillomandibular width difference of basal bone in the canine, premolar and molar areas of skeletal Class Ⅲ were (4.69±2.84), (2.31±2.39) and (3.27±2.05) mm, respectively, which were significantly less than that of skeletal Class Ⅰ and Ⅱ(P＜0.01). Compared with skeletal Class Ⅰ, the maxillary canines and first molars of skeletal Class Ⅱ had larger lingual inclination level, while the maxillary first premolars and first molars of skeletal Class Ⅲ had larger buccal inclination level, the mandibular canines and the mandibular first premolars of skeletal Class Ⅲ had larger lingual inclination level(P＜0.01). CONCLUSIONS: For normodivergent patients, the width of the mandibular base bone, alveolar bone, and maxillary and mandibular dental arch in skeletal Class Ⅲ is the widest, which is more likely to have width discrepancy in basal bone. In skeletal Class Ⅲ, the maxillary teeth are buccally inclined, and the mandibular teeth are ingually inclined. In skeletal Class Ⅱ, the maxillary teeth are lingually inclined, and the mandibular teeth are compensatory upright.
[Study of the mucosal morphological difference of distal-extension of mandibular dentition defect impressions taken by intra-oral digital scanning and selective pressure impression technique].
Gong ZC, Peng Y, Zhong Q … +2 more , Wu XY, Fang SB
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104349
PURPOSE: To compare the mucosal morphological difference in distal-extension area of mandibular dentition defect taken by intra-oral digital scanning and selective pressure impression techniques. METHODS: Seventeen patie...
PURPOSE: To compare the mucosal morphological difference in distal-extension area of mandibular dentition defect taken by intra-oral digital scanning and selective pressure impression techniques. METHODS: Seventeen patients with Kennedy Class I and Class II dentition defect in lower jaw were included, including twenty-two distal-extensions. Intraoral digital scanning and functional impression technique were taken in each patients, respectively. Laboratory cast scanner was used to scan the plaster casts made from the selective pressure impression to obtain the three-dimensional data. All the data were stored in STL format. The 3D data collecting from intra-oral digital scanning and selective pressure impression from the same patient were compared by Geomagic Control 2014 software. Root mean square of 2.5mm diameter area was calculated in 5,10,15 mm from terminal tooth. Pearson's correlation test was used to analyze the correlation of the distance and morphological difference with SPSS 20.0 software package. RESULTS: Mean mucosal morphological difference of jaw distal-extension edentulous area taken by intra-oral digital scanning and selective pressure impression techniques was (0.37±0.12) mm. There was positive correlation between distance from terminal tooth and mucosal morphological difference(P＜0.05). Morphological differences in 5, 10, 15 mm from terminal tooth were (0.14±0.11) mm, (0.22±0.13) mm and (0.39±0.16) mm, respectively. CONCLUSIONS: In this study, there was positive correlation between the length of distal-extension edentulous area and mucosal morphological difference, while the kind of ridge defect and mucosal thickness may also affect the morphological difference quantity.
[Comparison of the application of micro-implant screw support and flat guide plate in the treatment of excessive deep overbite of lower anterior teeth].
Wang J, Sun YF, Lu Q … +1 more , Pang ST
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104348
PURPOSE: To compare and analyze the orthodontic effects of micro-implant screw support and flat guide plate on excessive deep overbite of lower anterior teeth. METHODS: Eighty-two patients with excessive deep overbite of...
PURPOSE: To compare and analyze the orthodontic effects of micro-implant screw support and flat guide plate on excessive deep overbite of lower anterior teeth. METHODS: Eighty-two patients with excessive deep overbite of the lower anterior teeth who were treated from January to December 2022 were selected and randomly divided into two groups (41 in each group) by random number table method. Both groups were treated with straight wire arch orthodontic technology, and the anterior teeth were supported by micro-implant screws (micro-implant screw group) and flat guide plates (flat guide plate group), respectively. The effect of upper anterior tooth compression, changes in occlusal plane, and apical absorption were compared between the two groups. SPSS 25.0 software package was used for statistical analysis. RESULTS: There were no significant changes in SNA angle, SNB angle, ANB angle, U1-PP, U6-PP, and L6-MP before and after treatment between the two groups (P＞0.05). L1-MP significantly increased in both groups after treatment than before treatment(P＜0.05). There was no significant difference in bite opening, Spee curve depth, U1 depression, L1 depression, U6 elongation, L6 elongation and occlusal opening time between the two groups before and after treatment(P＞0.05). The root apex absorption of the mandibular central incisors and lateral incisors in the micro-implant screw group was significantly lower than that in the flat guide plate group(P＜0.05), while there was no significant difference in root apex absorption between the two groups of canines(P＞0.05). CONCLUSIONS: Both micro-implant screw support and flat guide plate can effectively lower the mandibular anterior teeth in the treatment of deep overbite in adults, with good orthodontic effects. However, the latter can lead to increased root resorption.
[Effects of laser combined with periodontal basic treatment on periodontal indices, subgingival microflora, adiponectin, MMP-13 and IL-1β in gingival crevicular fluid in patients with periodontitis].
Zhang ZY, Chen L, Yan N … +1 more , Zhang SH
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104347
PURPOSE: To investigate the effects of laser combined with periodontal basic treatment on periodontal indices, subgingival flora, adiponectin, matrix metalloproteinase-13 (MMP-13) and interleukin-1β (IL-1β) in patients w...
PURPOSE: To investigate the effects of laser combined with periodontal basic treatment on periodontal indices, subgingival flora, adiponectin, matrix metalloproteinase-13 (MMP-13) and interleukin-1β (IL-1β) in patients with periodontitis. METHODS: A retrospective analysis was performed on 100 patients with periodontitis diagnosed and treated in Hengshui People's Hospital from December 2022 to July 2023. According to treatment methods, the patients were divided into control group (n=51) and experimental group (n=49). The control group received periodontal basic treatment, and the experimental group received laser treatment on the basis of the control group. The periodontal indexes, subgingival microflora, adiponectin, MMP-13, IL-1β and bone metabolic factors of gingival crevicular fluid before and after treatment were compared between the two groups, as well as the clinical therapeutic effect. Statistical analysis was performed with SPSS 22.0 software package. RESULTS: After treatment, probing depth(PD), bleeding on probing(BOP), gingival index(GI) and plaque index (PLI) in the experimental group were lower than before treatment (P＜0.05), PD, BOP and PLI in the control group were lower than before treatment (P＜0.05), and PD, BOP, GI and PLI in the experimental group were significantly lower than those in control group (P＜0.05). After treatment, Lactobacillus, Clostridium and Bacteroides in both groups were significantly lower than before treatment (P＜0.05), and the experimental group was significantly lower than the control group(P＜0.05). After treatment, adiponectin in gingival crevicular fluid increased in both groups compared with before treatment(P＜0.05), and MMP-13 and IL-1β in gingival crevicular fluid decreased in both groups compared with before treatment (P＜0.05), and adiponectin in gingival crevicular fluid in the experimental group was significantly higher than that in the control group (P＜0.05), MMP-13 and IL-1β in the experimental group were significantly higher than that in the control group (P＜0.05). After treatment, procollagenⅠtype N-terminal peptide (PINP), cross linked C-telopeptide of type Ⅰ collagen(CXT) and bone glaprotein (BGP) were significantly higher than those before treatment (P＜0.05), and the experimental group was significantly higher than the control group (P＜0.05). The total effective rate of the experimental group was significantly higher than that of the control group (P＜0.05). CONCLUSIONS: Laser combined with periodontal basic treatment can effectively improve periodontal indexes, reduce subgingival flora, increase the levels of adiponectin and bone metabolic factor in gingival crevicular fluid, reduce the levels of MMP-13 and IL-1β in gingival crevicular fluid, and improve the clinical therapeutic effect in patients with periodontitis.
[Influence of gingival biotype width on the health of peri-implant bone and soft tissues and the aesthetic outcome of the gingival papilla for single maxillary posterior implants].
Yang CD, Xiang XD
Shanghai Kou Qiang Yi Xue · 2024 Jun · PMID 39104346
PURPOSE: To explore the influence of gingival biotype and width of keratinized gingiva on peri-implant bone tissue, soft tissue health, and esthetic outcome of the papilla surrounding single posterior maxillary implants....
PURPOSE: To explore the influence of gingival biotype and width of keratinized gingiva on peri-implant bone tissue, soft tissue health, and esthetic outcome of the papilla surrounding single posterior maxillary implants. METHODS: Seventy-eight patients who underwent single posterior maxillary implant surgery from May 2019 to September 2022 were selected, involving the placement of 78 implants. Based on periodontal probing outcomes one month post-restoration, the patients were divided into thin gingival biotype group(n=32) and thick gingival biotype group(n=46). Comparisons were made six months after implant restoration regarding buccal keratinized mucosa width(KMW), peri-implant bone tissue [implant bone loss(IBL)], soft tissue health [modified plaque index (mPLI), modified bleeding index for implants (mBLI), probing pocket depth (PPD)], and esthetic effect of the papilla [papilla index score (PIS), food impaction, gingival margin color satisfaction index (GMCS)]. Statistical analysis was performed with SPSS 27.0 software package. RESULTS: The thick gingival biotype group showed significantly greater keratinized gingival width compared to the thin gingival biotype group (P＜0.05). Spearman correlation analysis revealed a positive correlation between gingival biotype and keratinized gingival width(r=-0.416, P=0.000). For peri-implant bone tissue, bone loss in the thin gingival biotype group was significantly higher than that in the thick gingival biotype group. In soft tissue health, the probing pocket depth for implants in the thin gingival biotype group was significantly less than that in the thick gingival biotype group. In terms of esthetic effect of the papilla, PES score in the thin gingival biotype group was significantly lower than in the thick gingival biotype group(P＜0.05). Pearson correlation analysis showed a negative correlation between gingival biotype and papilla index score, GMCS, bleeding on probing, and PPD, but a positive correlation with food impaction, bone loss and mPLI(P＜0.05). The width of keratinized gingiva was positively correlated with papilla index score, GMCS, bleeding on probing and PPD, but negatively correlated with food impaction, bone loss and mPLI(P＜0.05). There was significantly difference between thin and thick gingival biotype groups for KMW >2 mm(P＜0.05). A significant difference was showed in thick gingival biotype group when KMW ≤2 mm and ＞2 mm(P＜0.05). CONCLUSIONS: Gingival biotype and keratinized mucosa width significantly influence peri-implant bone and soft tissue health as well as esthetic outcome of the papilla around single posterior maxillary implants, offering guidance for predicting the long-term success and esthetic outcomes of implants.
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