The Journal Of Oral Implantology[JOURNAL]
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200 papers
The Lateral Lingual Foramen: A Structure to Consider in Planning in Implantology and Oral Surgery.
Salvador RF, Yadira DF, Daniel SG … +1 more , Norma Samanta RC
J Oral Implantol · 2024 Oct · PMID 38962851 · Publisher ↗
Abstract loading — click title to view on PubMed.
Implant Stability After Graftless Motor-Driven Crestal Sinus Elevation: A Cohort Study.
Alzoubi FM, AlRumaih HS, Alhumaidan AA … +1 more , Al-Sulimmani W
J Oral Implantol · 2024 Oct · PMID 38961753 · Publisher ↗
Graftless motor-driven crestal sinus elevation may be a preferable alternative to conventional methods due to the reduction of postsurgical complications and lower cost. This prospective cohort study evaluated the stabil...
Graftless motor-driven crestal sinus elevation may be a preferable alternative to conventional methods due to the reduction of postsurgical complications and lower cost. This prospective cohort study evaluated the stability of implants installed using this technique. Twenty-nine Straumann BLT (bone level tapered) implants in 29 patients were included in the sample. Average implant stability quotients (ISQ) were measured immediately after surgery (mean: 73.5 ± 9.2) and after a period of healing (mean: 77.1 ± 4.5) using resonance frequency analysis (RFA). There was a significant increase in implant stability after healing (P = .035). The healing duration did not significantly influence how implant stability increased (P =.373). The mean ISQ after healing was significantly higher than the clinically acceptable stability value of 65 ISQ (P < .001). Implant length and width were not significantly correlated with ISQ increase (P = .764 and P = .085, respectively). In addition, there were no significant differences in average ISQ values measured immediately postsurgery (at baseline) or after healing between implants with and without registered perforations during surgery (P = .118 and P = .366, respectively). The posthealing stability of 4 implants that did not achieve primary stability was not significantly less stable after the healing period than those that had achieved primary stability (P = .086). Moreover, the level of insertion torque significantly impacted implant stability immediately postsurgery (P < .001), but the ISQ values measured after healing were not significantly different based on the initial insertion torque values (P = .131). This study suggests that implants installed using graftless motor-driven crestal sinus elevation may achieve clinically acceptable stability as measured by RFA.
Bone Augmentation With Alloplastic Graft Material in a Patient Under Bisphosphonate Therapy: A Case Report and Literature Review.
Narahara S, Ohba S, Ichinose S … +5 more , Yamanouch Y, Kuroshima S, Shido R, Sawase T, Yamada T
J Oral Implantol · 2024 Aug · PMID 38953229 · Publisher ↗
Cases of relatively safe dental implant treatment in patients with low-volume bisphosphonate (BP) have been gradually reported. Although bone augmentation is commonly used when the bone volume is insufficient for implant...
Cases of relatively safe dental implant treatment in patients with low-volume bisphosphonate (BP) have been gradually reported. Although bone augmentation is commonly used when the bone volume is insufficient for implant placement, the studies and case reports regarding the safety of bone augmentation in patients treated with BP remain insufficient. Herein, we report a case wherein bone augmentation was performed after BP treatment with bone healing realized according to imaging, and we review the literature regarding BP and bone augmentation. A 67-year-old Japanese woman requested implant treatment for a hopeless lower right second molar. She had been taking minodronic acid hydrate (50 mg/4 wk) for 18 months to treat steroid-induced osteoporosis. After obtaining informed consent, tooth extraction and bone augmentation within the extraction socket were performed. The tooth was extracted atraumatically to preserve the surrounding alveolar bone, and the extraction socket was intensely curetted. Subsequently, the socket was filled with carbonate apatite granules and covered with a biodegradable membrane, and the wound was sutured without tension. Although protracted wound healing without any symptoms of infection was observed, the wound healed completely. No clinical symptoms were observed, the color of the mucosa at the site was healthy, and imaging findings at 6 months postoperation indicated that osteogenesis had progressed uneventfully.
Effect of Implant Maintenance on Incidence of Peri-implantitis and Early Implant Failure: Retrospective Cohort Study.
Golob Deeb J, Ha M, Carrico CK … +2 more , Waldrop T, Lee PK
J Oral Implantol · 2024 Aug · PMID 38916039 · Publisher ↗
Maintaining dental implants and managing peri-implant tissues has become integral to dental practice. Owing to the larger number of implants placed, the number of peri-implant lesions is increasing. Periodontal implant m...
Maintaining dental implants and managing peri-implant tissues has become integral to dental practice. Owing to the larger number of implants placed, the number of peri-implant lesions is increasing. Periodontal implant maintenance therapy (PIMT) provides a conservative long-term treatment modality to monitor and maintain implants. This study aims to investigate periodontal maintenance effects on peri-implant tissue health to add to existing evidence. A retrospective analysis included implant patients with 1-7 years of follow-up, assessing peri-implantitis and early implant failure as outcome variables. The frequency of PIMT, implant characteristics, and demographics served as predictors, and associations between peri-implantitis, implant failure, and PIMT frequency were analyzed using Fisher exact tests with the significance level set at .05. Data were collected on 501 implants from 185 patients. Twenty-nine (6%) demonstrated peri-implantitis, whereas 22 (5%) experienced early implant failure. A significant association between PIMT and peri-implantitis was observed (p-value = .0169) with the rate of peri-implantitis at 9% (n = 20) for patients without PIMT and only 4% (n = 10) for those with PIMT. Whereas PIMT was not significantly associated with early implant failure (p-value = .4372), peri-implantitis was: 25% of implants with peri-implantitis experienced early failure compared with 4% without (p-value = .0062). Considering the limitations of the present study, the absence of PIMT was found to be associated with peri-implantitis, which was itself associated with early implant failure. Implant maintenance at 6-month intervals is important in maintaining peri-implant health.
A Strip Free Gingival Graft and a Xenogeneic Collagen Matrix to Increase Keratinized Tissue After Vertical Bone Augmentation.
Jiménez-Tundidor R, Marco-Español R, Segura-Mori L … +5 more , Bazal-Bonelli S, Sánchez-Jorge MI, Granić M, Cortés-Bretón Brinkmann J, López-Quiles J
J Oral Implantol · 2024 Aug · PMID 38895920 · Publisher ↗
After vertical bone augmentation (VBA) surgery, loss of both keratinized tissue (KT) and vestibule depth (VD) take place. This article evaluated KT gain, patient satisfaction, and aesthetic outcomes after a modified apic...
After vertical bone augmentation (VBA) surgery, loss of both keratinized tissue (KT) and vestibule depth (VD) take place. This article evaluated KT gain, patient satisfaction, and aesthetic outcomes after a modified apically repositioned flap (ARF) in combination with a strip-free gingival graft (FGG) harvested from the palate and a xenogeneic collagen matrix (XCM) to correct mucogingival distortion (MGD) after VBA. This technique minimizes patient morbidity by reducing the need for extensive masticatory mucosa grafts. The study included 12 patients with ≤3 mm KT after vertical augmentation procedures. Keratinized tissue gain and tissue thickness were measured. Patient morbidity and aesthetic outcomes were also evaluated. Twenty-four months after surgery, significant VD gain was observed, obtaining a vertical KT augmentation of 5.38 ± 2.06 mm, although tissue thickness increase was only 0.42 ± 0.42mm. Regarding patient satisfaction, aesthetic results evaluating tissue color and texture were satisfactory; the pain was slight, obtaining a score of 2.10 ± 1.13 out of 10, measured using a Visual Analogue Scale (VAS). The present retrospective case series study shows that using an apically repositioned flap combined with a strip FGG and an XCM might offer a valid means of achieving KT gain.
Internal Allo-Cortical Tenting: A Modified Ridge Split Technique in Three-Dimensional Ridge Augmentation.
Goudarzimoghaddam F, Ekhlasmandkermani M, Houshmand B … +1 more , Sabri H
J Oral Implantol · 2024 Aug · PMID 38895832 · Publisher ↗
Three-dimensional (3D) alveolar ridge deficiencies necessitate horizontal and vertical bone reconstruction for optimal implant positioning. Despite several available techniques, achieving desired augmentation outcomes re...
Three-dimensional (3D) alveolar ridge deficiencies necessitate horizontal and vertical bone reconstruction for optimal implant positioning. Despite several available techniques, achieving desired augmentation outcomes remains challenging. This case study aims to present a modified ridge split technique for bone reconstruction in horizontal and vertical dimensions. The proposed technique was used to reconstruct the horizontal and vertical ridge defect from removing a previously failed implant. This technique includes placing a cortical allograft plate as an internal tent in the split ridge. A portion of the plate was inserted into the ridge, while the other part was placed in the coronal of the vertical defect. Additional guided bone regeneration was performed around the tented plate on both the buccal and lingual sides. After 5 months, cone beam computerized tomography revealed sufficient bone formation in horizontal and vertical dimensions. Within the limitations of the present case study, internal cortical tenting would be a reliable method for 3D bone reconstruction in cases where the ridge split is feasible.
Successful Treatment of Nasopalatine Duct Cyst After Maxillary Anterior Implant Surgery: A Case Report.
Gao X, Dai S, Yan X … +7 more , Jia X, Huang B, Zhang H, Wei D, Guan X, Shi D, Meng H
J Oral Implantol · 2024 Oct · PMID 38867383 · Publisher ↗
Sporadic studies have reported the occurrence of nasopalatine duct cysts after maxillary anterior implant surgery, and the treatment methods still have clinical uncertainty. We report a potential therapy method that succ...
Sporadic studies have reported the occurrence of nasopalatine duct cysts after maxillary anterior implant surgery, and the treatment methods still have clinical uncertainty. We report a potential therapy method that successfully treated a nasopalatine duct cyst that developed and expanded 1 year after maxillary anterior implant placement following periodontally hopeless teeth extraction. The nasopalatine cyst was treated surgically without removing implants. During flap surgery, the cyst was removed intact, and the exposed implant's surface was debrided thoroughly by hydrogen peroxide (H2O2) rinsing, glycine air polishing, and saline rinsing. To deal with the significant bone defect caused by the cyst, a bovine porous bone mineral injected platelet-rich fibrin (BPBM-i-PRF) complex was applied to fill the defect, following a resorbable collagen membrane to cover. Seven years after surgery, no cyst recurrence was observed, and bone regeneration in the bone graft area was stable. The implants functioned well without mobility. For nasopalatine duct cysts associated with dental implant placement, complete surgical debridement and longitudinal stable bone regeneration are possibly accessible by regenerative surgery without implant removal.
Ceramic Implant Rehabilitation: Consensus Statements from Joint Congress for Ceramic Implantology: Consensus Statements on Ceramic Implant.
Schnurr E, Sperlich M, Sones A … +8 more , Romanos GE, Rutkowski JL, Duddeck DU, Neugebauer J, Att W, Sperlich M, Volz KU, Ghanaati S
J Oral Implantol · 2024 Aug · PMID 38867376 · Publisher ↗
The objectives of the study group focused on the following main topics related to the performance of 1- and 2-piece ceramic implants: defining bone-implant-contact percentages and its measurement methods, evaluating the...
The objectives of the study group focused on the following main topics related to the performance of 1- and 2-piece ceramic implants: defining bone-implant-contact percentages and its measurement methods, evaluating the pink esthetic score as an esthetic outcome parameter after immediate implantation, recognizing the different results of ceramic implant designs as redefined by the German Association of Oral Implantology, incorporating the patient report outcome measure to include satisfaction and improvement in oral health-related quality of life, and conducting preclinical studies to address existing gaps in ceramic implants. During the Joint Congress for Ceramic Implantology (2022), the study group evaluated 17 clinical trials published between 2015 and 2021. After extensive discussions and multiple closed sessions, consensus statements and recommendations were developed, incorporating all approved modifications. A 1-piece implant design features a coronal part that is fused to the implant body or interfaces with the postabutment restoration platform, undergoing transmucosal healing. Long-term evaluations of this implant design are supported by established favorable clinical evidence. Inaccuracies in the pink esthetic score and bone-implant-contact percentages were managed by establishing control groups for preclinical studies and randomizing clinical trials. The patient-reported outcome measures were adjusted to include an individual visual analog scale, collected from each clinical study, that quantified improved oral health and quality of life. Preclinical investigations should focus on examining the spread of ceramic debris and the impact of heat generation on tissue and cellular levels during drilling. Further technical advancements should prioritize wound management and developing safe drilling protocols.
Use of Lasers in the Nonsurgical Treatment of Peri-Implantitis: A Systematic Review of the Literature.
Dominique C, Rethoré G, Verner C … +3 more , Alliot C, Soueidan A, Struillou X
J Oral Implantol · 2024 Oct · PMID 38867374 · Publisher ↗
Peri-implantitis is an infectious disease that causes inflammation of the tissue surrounding an implant. The aim of this systematic review of the literature is to assess the effect of the use of lasers in the nonsurgical...
Peri-implantitis is an infectious disease that causes inflammation of the tissue surrounding an implant. The aim of this systematic review of the literature is to assess the effect of the use of lasers in the nonsurgical treatment of peri-implantitis in order to estimate its benefits compared with conventional therapies. The review's protocol has been registered on PROSPERO international prospective register. The research strategy was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The inclusion criteria were as follows: in vivo studies, written in English, measurements of clinical parameters, minimum follow-up at 6 months and with nonsurgical control group, studies about photodynamic therapy, randomized clinical trial, and clinical trial. Electronic (on PubMed, Cochrane, Latin American and Caribbean Health Sciences Literature, and Report Evidence-based Practice Centers databases) and manual searches (in articles' references) were conducted until July 2021. Risk of bias was assessed for each reference thanks to the Cochrane Collaboration's tool. A total of 12 randomized clinical trials, with a high level of evidence, were selected and investigated in this systematic review. A table summarizes data extracted from these articles. It appears that the parameters improve favorably by using lasers, but without any significant difference. In accordance with the analysis of studies, our results show that laser therapy with specific characteristics allows to obtain beneficial therapeutic effects on wound healing in the short and the medium-term concerning the clinical parameters in the nonsurgical treatment of peri-implantitis. Concerning its long-term usefulness, it has yet to be confirmed. However, its benefits remains limited since the results agree that the effects of the laser are similar to those obtained by using conventional therapy.
A Conservative Technique for Fractured Implant Abutment Screw Retrieval on an Internal Connection Implant: Proof of Concept.
Farronato D, Romano L, Dani G … +3 more , Messina G, Miceli B, Azzi L
J Oral Implantol · 2024 Oct · PMID 38867372 · Publisher ↗
Broken screw removal from the implant connection is a common but challenging process. Several proposed methods and technical solutions may result in unsuccessful removal; thus, a novel, more conservative, risk-free metho...
Broken screw removal from the implant connection is a common but challenging process. Several proposed methods and technical solutions may result in unsuccessful removal; thus, a novel, more conservative, risk-free method is proposed as a first attempt. The proposal is to use a silicon restoration holder to be twisted counterclockwise on the dried surface of the broken fragment inside the implant connection. This method, within the limitations of a minimal case series, yielded 100% results; however, despite previous attempts with less conservative techniques, this approach showed no efficacy. This article aims to promote the use of silicon restoration holders as a minimally invasive first attempt at broken screw retrieval treatment before considering other options.
Ridge Preservation Combined With Open Barrier Membrane Technique in Case of Postextractive Oroantral Communication: A Case Series Retrospective Study.
Scavia S, Audino E, Salgarello S
J Oral Implantol · 2024 Jun · PMID 38839071 · Publisher ↗
After dental extraction, a physiological phenomenon of reabsorption of the dentoalveolar process is triggered, especially if periradicular lesions are present, which can sometimes be associated with oroantral communicati...
After dental extraction, a physiological phenomenon of reabsorption of the dentoalveolar process is triggered, especially if periradicular lesions are present, which can sometimes be associated with oroantral communication in the upper posterior maxilla. To investigate a minimally invasive approach, 19 patients undergoing tooth extraction in the posterosuperior maxilla were recruited. All cases presented an oroantral communication with a diameter of 2-5 mm after tooth extraction and the alveolar process and, in some cases, with a partial defect of 1 or more bony walls. In these cases, a single surgical procedure was used to preserve the alveolar ridge using an open barrier technique with an exposed dense polytetrafluoroethylene membrane. The bottom of the extraction socket was filled with a collagen fleece. The residual bone process was reconstructed using a biomaterial based on carbonate-apatite derived from porcine cancellous bone. After 6 months, all patients were recalled and subjected to radiographic control associated with an implant-prosthetic rehabilitation plan. Data relating to the sinus health status and the average height and thickness of the regenerated bone were collected. Radiographic evaluation verified the integrity of the maxillary sinus floor with new bone formation, detecting a vertical bone dimension between 3.1 mm and 7.4 mm (average 5.13 ± 1.15 mm) and a horizontal thickness between 4.2 mm and 9.6 mm (average 6.86 ± 1.55 mm). The goal of this study was to highlight the advantage of managing an oroantral communication and, simultaneously, obtain the preservation and regeneration of the alveolar bone crest. The open barrier technique appears to be effective for the minimally invasive management of oroantral communication up to 5 mm in diameter in postextraction sites, with a good regeneration of hard and soft tissue.
Comparison of Implant-Retained Overdenture and Conventional Complete Denture: A Survey Study to Measure Patients' Satisfaction and Quality of Life in Dental School Clinics.
Kutkut A, Knudsen H, Bush H … +1 more , Studts J
J Oral Implantol · 2024 Jun · PMID 38839070 · Publisher ↗
Patient satisfaction and quality of life are integral to assessing oral health care quality. For many Americans still using conventional complete dentures (CDs) or implant-retained mandibular overdentures (IODs), it rema...
Patient satisfaction and quality of life are integral to assessing oral health care quality. For many Americans still using conventional complete dentures (CDs) or implant-retained mandibular overdentures (IODs), it remains essential to consider improving their oral health outcomes and quality of life. Due to inexperienced student dentists providing dental care to dental school patients, patient grievances are generally considered a problem. Patient feedback and satisfaction have proven valuable resources for monitoring and improving patient safety. While CDs and IODs are the 2 leading treatment options for edentulism, more comparative studies in the literature need to compare their outcomes in a school setting. The research question that guided this comparative analysis was, "Is patient satisfaction and quality of life affected by the type of prostheses and provider?" A validated questionnaire was mailed to 520 individuals selected from records of patients who had received treatment for edentulous mandible at a student prosthodontic clinic at the University of Kentucky College of Dentistry from 2014 to 2016 with at least 1 year of follow-up time. A validated questionnaire for edentulous patients based on the Oral Health Impact Profile (OHIP-19) was used. In addition, information on patients' oral health-related quality of life, including questions related to the edentulous patients' satisfaction with their dentures, was collected. The response rate was 33% (N = 171). The study's findings confirm previous findings, suggesting that IODs may significantly impact oral health-related quality of life. Data show that 76% of the IOD group reported improvement in experience when using the implants to retain the mandibular denture. However, there were no statistically significant differences in the OHIP scores between overall CD and IOD patient groups. Males with IODs had lower physical pain, limitations, and disability scores than males with CD. However, females with IODs reported more significant concerns associated with a social disability and handicap domains. Comparing users who had experiences with both treatment options, this study discerned essential characteristics that contribute to increased patient satisfaction with IODs and identified significance in outcomes by gender. These findings guide prosthodontic practitioners' patient care practices and identify a continuing need to discuss CD and IOD treatment protocols within dental school curricula.
Identification of the Incisive Branch of the Inferior Alveolar Nerve of Edentulous Mandibles Using Cone-Beam Computerized Tomography.
Madern AL, Barber HD, Agostini-Walesch G … +4 more , Siu T, Davis J, Klinefelter J, Martin J
J Oral Implantol · 2024 Jun · PMID 38839069 · Publisher ↗
This study explored the average length of the incisive branch (IB) of the inferior alveolar nerve on cone-beam computerized tomography (CBCT) with regard to patient demographics in patients with edentulous mandibles. CBC...
This study explored the average length of the incisive branch (IB) of the inferior alveolar nerve on cone-beam computerized tomography (CBCT) with regard to patient demographics in patients with edentulous mandibles. CBCT was used in a retrospective study of edentulous mandibles to assess the presence and anatomical variation for the IB. Three independent observers measured bilateral IB lengths. In addition to demographics, IB length and port of exit data were obtained. A 1-way analysis of variance was used to test whether IB length varied by sex or port of exit, and a standard Pearson correlation was used to test for IB length and age significance, with a significance level of P < .05. Intraclass correlation coefficients showed significant agreement in IB length across all observers. No significant difference was noted between the exit port and IB length. An important effect was reported for sex, indicating women have generally shorter IB lengths (9.43 ± 3.99 vs 10.55 ± 3.92). There was a significant correlation with age, but the relationship was weak. Edentulous mandibles have an altered anatomic landscape, and establishing predictive IB dimensions aids practitioners in surgical planning.
Dental Versus Zygomatic Implants in the Treatment of Maxillectomy: A Finite Element Analysis.
Leblebicioğlu Kurtuluş İ, Kilic D, Kilic K
J Oral Implantol · 2024 Jun · PMID 38839068 · Publisher ↗
This study analyzed the stress distributions on zygomatic and dental implants placed in the zygomatic bone, supporting bones, and superstructures under occlusal loads after maxillary reconstruction with obturator prosthe...
This study analyzed the stress distributions on zygomatic and dental implants placed in the zygomatic bone, supporting bones, and superstructures under occlusal loads after maxillary reconstruction with obturator prostheses. A total of 12 scenarios of 3-dimensional finite element models were constructed based on computerized tomography scans of a hemimaxillectomy patient. Two obturator prostheses were analyzed for each model. A total force of 600 N was applied from the palatal to buccal bones at an angle of 45°. The maximum and minimum principal stress values for bone and von Mises stress values for dental implants and prostheses were calculated. When zygomatic implants were applied to the defect area, the maximum principal stresses were similar in intensity to the other models; however, the minimum principal stress values were higher than in scenarios without zygomatic implants. In models that used zygomatic implants in the defect area, von Mises stress levels were significantly higher in zygomatic implants than in dental implants. In scenarios where the prosthesis was supported by tissue in the nondefect area, the maximum and minimum principal stress values on cortical bone were higher than in scenarios where implants were applied to defect and nondefect areas. In patients who lack an alveolar crest after maxillectomy, a custom bar-retained prosthesis placed on the dental implant should reduce stress on the zygomatic bone. The stress was higher on zygomatic implants without alveolar crest support than on dental implants.
Managing Difficult Encounters With Patients.
Rutkowski JL
J Oral Implantol · 2024 Jun · PMID 38839067 · Publisher ↗
Abstract loading — click title to view on PubMed.
Injury Risk Estimation in Mandible-Related Surgical Procedures: A CBCT Study Based on Vital Interforaminal Anatomical Structures.
Barbosa DAF, Kurita LM, Silva PGB … +7 more , Vieira AF, Teixeira RC, Menezes Pimenta AV, Chaves FN, Neves FS, Carvalho FSR, Costa FWG
J Oral Implantol · 2024 Jun · PMID 38839066 · Publisher ↗
The mandibular interforaminal region has been considered safe for surgical procedures; nevertheless, the risk of injury to neurovascular structures, such as the mental foramen (MF) and its related structures (anterior lo...
The mandibular interforaminal region has been considered safe for surgical procedures; nevertheless, the risk of injury to neurovascular structures, such as the mental foramen (MF) and its related structures (anterior loop [AL] and lingual foramina [LF]) should not be overlooked. The study aimed to evaluate the relative risk of injury to these structures during surgical procedures in the anterior region of the mandible based on cone-beam computed tomography (CBCT) scans. A retrospective cross-sectional and observational study was performed on 250 CBCTs from adults (18-69 years) with dentate jaws. Linear measurements of the MF, AL, and LF were evaluated to estimate the risk of injury to these structures during chin-related surgical procedures. The most frequent distance between the base of the mandible (BM) and MF was 8 mm (30.2%). In addition, 20.4% of the CTs had 6 mm from the vestibular cortical bone to the LF. The commonly found measurement from LF to the apex of the nearest tooth was 7 mm (24.0%); 64.2% of the CTs showed a 2-mm distance between the most distal point of the dental implant site to the most anterior point of the AL. Safety distances for genioplasty techniques (MF to mandible base > 6 mm, 96.6% [CI 95%, 95.0%-98.2%]) were observed. Considering the 5-mm cut-off point between the lower limit of a hypothetical bone graft and the chin, 65.4% (CI 95%, 58.9%-71.9%) of CTs were within this distance. Regarding the safety margin of 8 mm, 85.6% (CI 95%, 80.8%-90.4%) were up to this value. This study found safety margins for genioplasty and chin bone grafting surgical techniques that adopt a 5-mm cut-off point. Further similar studies assessing other surgical methods and employing larger samples from different geographical origins may contribute to this field of investigation.
Comparative Analysis of Internal Tapered Implant-Abutment Connections: Evaluating the Morse Effect.
Nogueira Barbosa Marchon R, Mourão CF, Rutkowski JL … +3 more , Ghanaati S, Mello-Machado RC, Mendes Senna P
J Oral Implantol · 2024 Aug · PMID 38826061 · Publisher ↗
The purpose of the present study was to evaluate the Morse effect of different internal tapered implant-abutment connections (ITCs) using a pullout test. Implants with different ITCs were selected: Short (Bicon, USA), G1...
The purpose of the present study was to evaluate the Morse effect of different internal tapered implant-abutment connections (ITCs) using a pullout test. Implants with different ITCs were selected: Short (Bicon, USA), G1; Novo Colosso (Medens, Brazil), G2; Epkut (SIN, Brazil), G3; Strong SW (SIN, Brazil), G4; Flash (Conexão, Brazil), G5 and Bone Level (Straumann, Switzerland), G6. The respective computer-aided design (CAD) files were loaded into the analysis software to measure each ITC's taper angle and implant-abutment contact area. Six implants from each group were embedded in acrylic resin blocks, and the respective universal abutments were fixed using a mallet (G1) or by applying 20 Ncm of torque (G2 to G6). After 10 minutes, each abutment's retention screw was removed, and the force necessary for abutment rupture was recorded using a universal testing machine at a crosshead speed of 0.5 mm/min. The groups were compared using a one-way analysis of variance and Tukey's test. Spearman's correlation was used to check the correlation of the taper angle and contacting area with the pullout strength. G1, a no-screw abutment with a 3° taper, and G2, a 10° tapered abutment tightened by 20 Ncm, presented the highest pullout strength (P < .05). The increased taper angle of G4, compared to G3, reduced the Morse effect despite their similar implant-abutment contacting areas (P < .05). The G5 and G6 abutments loosened after screw removal and did not exhibit pullout resistance. The closer the tapered angle (r = -.958) and the higher the implant-abutment contact area (r = .880), the higher the pullout strength (P < .001). Within the limits of this study, the Morse effect is different among tapered implant-abutment connections. The closer the tapered angle and the higher the interface area, the higher the Morse effect between the abutment and the implant.
Treatment of Retrograde Peri-Implantitis Originating From Apical Periodontitis of an Adjacent Tooth: A Clinical Case Letter.
Oh SL, Tordik PA
J Oral Implantol · 2024 Aug · PMID 38822658 · Publisher ↗
This report aims to present a treatment of retrograde peri-implantitis originating from apical periodontitis of an adjacent tooth in an 84-year-old male. Apical periodontitis of the maxillary left central incisor (#9) ex...
This report aims to present a treatment of retrograde peri-implantitis originating from apical periodontitis of an adjacent tooth in an 84-year-old male. Apical periodontitis of the maxillary left central incisor (#9) extended to the apex of the maxillary left lateral incisor implant (#10), which had been functioning for 16 years. Root canal treatment for #9 was performed, followed by root end surgery to treat the apical periodontitis, which showed a periapical radiolucency measured 1 cm in its greatest dimension. After the root end filling was placed, neither bone substitute materials nor barrier membranes were used to fill and cover the bony defect area. A 2-year postoperative radiograph confirmed the osseous healing around the apices of #9 and #10.
A Staged Digital Protocol for the Terminal Dentition for Immediate Loading Using a Provi-guide.
Alzoubi FM
J Oral Implantol · 2024 Aug · PMID 38822657 · Publisher ↗
This report describes a step-by-step staged digital protocol for the terminal dentition patient using a Provi-guide. This protocol will improve implant placement accuracy, shorten treatment time, and assure an implant-su...
This report describes a step-by-step staged digital protocol for the terminal dentition patient using a Provi-guide. This protocol will improve implant placement accuracy, shorten treatment time, and assure an implant-supported fixed complete denture immediately loaded after extraction of the remaining terminal dentition and complete edentulism. The novelty of the Provi-guide technique described is that it serves 2 objectives: (1) a nonlimiting surgical guide, and (2) a fixed interim prosthesis. Implants placed in the described digital stagged protocol can serve both the interim and the final prosthesis.
Staged Approach Involving Orthodontic Implant Site Development With Labial Root Torque and Guided Bone Regeneration: 3-Year Follow-up Case Report.
Tanno T, Hasuike A, Naito K … +2 more , Ishikura C, Funato A
J Oral Implantol · 2024 Aug · PMID 38742461 · Publisher ↗
Restoring periodontally compromised teeth in esthetic zones through dental implant rehabilitation poses significant challenges due to the loss of supporting tissues. This case report describes a staged treatment strategy...
Restoring periodontally compromised teeth in esthetic zones through dental implant rehabilitation poses significant challenges due to the loss of supporting tissues. This case report describes a staged treatment strategy designed for a 48-year-old woman with advanced chronic periodontitis of the esthetic zone. This approach combined various advanced techniques, including periodontal regeneration, orthodontic implant site development with labial root torque, guided bone regeneration, and soft tissue augmentation. The innovative orthodontic implant site development with labial root torque technique was employed to harness healthy palatal periodontal ligament cells by strategically applying labial root torque in the horizontal labial-palatal direction. This technique uses healthy palatal periodontal ligament cells, which benefits overall periodontal health. The procedure involved gradually shifting hopeless teeth at a rate of 2 mm per month using nickel-titanium wires, thereby maintaining overcorrection for 2 months before extraction. Following successful orthodontic implant site development with labial root torque, the next phase involved guided bone regeneration using a honeycomb-structured titanium membrane. This set the stage for implant placement 6 months later, ensuring a stable foundation for subsequent prosthetic intervention. Soft tissue augmentation was then meticulously performed using an artificial collagen dermis infused with fibroblast growth factor-2, contributing to the overall esthetic outcome. Final prosthesis integration revealed a harmonious blend with the adjacent teeth and gums, underscoring the success of this multidisciplinary approach. This case report provides valuable insights into severe periodontitis in the esthetic field. Our findings highlight the importance of continuously researching and improving procedures for optimal patient care.
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