The Journal Of Oral Implantology[JOURNAL]
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200 papers
Repairing Dehiscence Defects at Implant Sites Using β-Tricalcium Phosphate/Calcium Sulfate Versus Xenograft Combined With Membrane: A Randomized Clinical Trial.
Pongsettakul A, Leepong N, Suttapreyasri S
J Oral Implantol · 2025 Feb · PMID 39360470 · Publisher ↗
Guided bone regeneration (GBR) typically involves bone grafts and a membrane to enhance bone formation. Beta-tricalcium phosphate calcium sulfate (β-TCP/CS) is a novel material with self-hardening and tissue growth inhib...
Guided bone regeneration (GBR) typically involves bone grafts and a membrane to enhance bone formation. Beta-tricalcium phosphate calcium sulfate (β-TCP/CS) is a novel material with self-hardening and tissue growth inhibition properties and can potentially replace the need for a membrane. This study compares β-tricalcium phosphate/calcium sulfate with deproteinized bovine bone mineral and a collagen membrane (DBBM/CM) to repair bone defects at implant sites over 6 months. Sixteen implant defects were divided into β-TCP/CS (n = 8) and DBBM/CM (n = 8). The results showed no significant differences in vertical and horizontal defect fill in millimeters between β-TCP/CS (2.87 ± 1.25 and 2.37 ± 1.06 mm, respectively) and DBBM/CM (3.5 ± 0.92 and 2.87 ± 1.12 mm, respectively). Buccal bone thickness (BT) alterations at the implant platform levels (BT0) were similar for both materials. However, β-TCP/CS exhibited greater bone alteration at the 2-mm level (BT2: -1.85 mm vs -0.47 mm) and 4-mm level (BT4: -1.79 mm vs 0.12 mm) apical to the implant platform compared to DBBM/CM. When assessing volume alteration, β-TCP/CS showed a significantly greater reduction at the platform to the 2 mm level (-61.98% vs -23.76%) than DBBM/CM. In conclusion, β-TCP/CS demonstrated promise for treating buccal bone defects around implants but exhibited higher graft reduction. This suggests that while β-tricalcium phosphate/calcium sulfate may offer clinical benefits, its potential for greater graft reduction should be considered. Further research and evaluation are warranted to fully understand the long-term implications of using β-TCP/CS in guided bone regeneration procedures.
A Case of Simultaneous Sinus Augmentation and Oroantral Fistula Closure for Implant Preparation.
Hotta Y, Ito K, Komatsu S … +3 more , Saito T, Teramoto Y, Hotta H
J Oral Implantol · 2024 Dec · PMID 39360465 · Publisher ↗
An oroantral communication may form in the upper molar region after tooth extraction. The patient is a 59-year-old female, who is a nonsmoker. At the initial visit, teeth #14, #15, and #17 were missing. After tooth #16 w...
An oroantral communication may form in the upper molar region after tooth extraction. The patient is a 59-year-old female, who is a nonsmoker. At the initial visit, teeth #14, #15, and #17 were missing. After tooth #16 was extracted due to apical periodontitis, a bone defect with a diameter of approximately 4 mm was observed, leading to the formation of an oroantral fistula (OAF). Another window was created in the lateral wall adjacent to the superior part of the bone defect at the fistula site to achieve closure of the OAF through bone formation and simultaneously perform sinus floor elevation (lateral approach) for implant placement. Through this lateral window, instruments were inserted into the maxillary sinus towards the bone defect at the fistula site. During this process, the remaining bone between the lateral window and the bone defect at the fistula site was carefully removed with instruments, connecting the two bone defects to facilitate manipulation of the instruments. The Schneiderian membrane was elevated without enlarging the tear. Six months after these surgeries, a cone beam computerized tomography (CBCT) scan confirmed the closure of the fistula with hard tissue and the elevation of the sinus floor. Subsequently, three implants were placed, and prosthetic treatment was completed. Follow-up data is provided, including periapical X-ray and CBCT images taken 2 years and 3 months after surgery (1 year and 3 months after the placement of the final prosthetic structure). The progress so far has been favorable.
Dental Implant Placement in a Patient With Polycythemia Vera: A Case Report.
Wang X, Meng X
J Oral Implantol · 2024 Dec · PMID 39360462 · Publisher ↗
Polycythemia vera is a malignant myeloproliferative neoplasm. It is characterized by the proliferation of all 3 major hematopoietic cells, including erythrocytes, leucocytes, and platelets. The resultant hypervolemia and...
Polycythemia vera is a malignant myeloproliferative neoplasm. It is characterized by the proliferation of all 3 major hematopoietic cells, including erythrocytes, leucocytes, and platelets. The resultant hypervolemia and hyperviscosity cause patients with polycythemia vera to be at risk of bleeding and thrombotic complications. This article reports a rare case in which a patient with preexisting polycythemia vera at a dental clinic underwent dental implant placement and provides the possibility of dental implant placement with an excellent outcome for patients with polycythemia vera.
Secured Anatomy-Driven Flap Extension (SAFE) for Guided Bone Regeneration: A Modified Flap Release Technique Description and Retrospective Study.
Majzoub J, Steigmann M, Chan HL
J Oral Implantol · 2024 Dec · PMID 39231417 · Publisher ↗
Current flap-releasing designs for guided bone regeneration (GBR) emphasize preserving subperiosteal microvasculature by adapting a deep-slit approach, separating the periosteum from the flap. Although biologically sound...
Current flap-releasing designs for guided bone regeneration (GBR) emphasize preserving subperiosteal microvasculature by adapting a deep-slit approach, separating the periosteum from the flap. Although biologically sound, a biomechanical disadvantage may be encountered. This study aimed to describe a modified design, the Secured Anatomy-driven Flap Extension (SAFE) technique, for effective facial flap release and to preliminarily evaluate the clinical outcomes of this technique retrospectively. Chart reviews were conducted to identify patients treated by facial flap release in staged GBR procedures between May 2020 and March 2022. The anatomical, biological, and biomechanical rationale of this technique were described. The following clinical data were collected: intraoperative and postoperative complications, initial and final horizontal ridge width before and 5-6 months after the GBR, and implant performance. A total of 10 patients were identified. At baseline, these patients presented with a mean ridge width of 2.05 ± 0.52 mm. No intraoperative and postoperative complications were observed in these patients (bleeding, wound opening, neurosensory disturbance, etc.) at the 2-3-week follow-up visit. At the re-entry, a mean ridge width of 6.50 ± 0.55 mm was measured (P < .01), resulting in a mean of 4.45 ± 0.65 mm ridge width gain. Twenty-one implants were successfully placed, integrated, and in function without signs/symptoms of peri-implantitis after a mean 21.5 ± 9.2 months follow-up period. Preliminary results suggest that the SAFE technique is a safe and predictable approach for releasing facial flaps during GBR procedures.
Clinical Report of the Immediate Placement Implants in Patients Aged 80 and Over: Five Cases and a Short Review.
Takiguchi M, Fujita K, Yoshida K
J Oral Implantol · 2024 Dec · PMID 39231395 · Publisher ↗
With the population aging, the proportion of elderly individuals is expected to increase, and the proportion of individuals over 80 is also likely to increase. Given that the population is aging and life expectancy is in...
With the population aging, the proportion of elderly individuals is expected to increase, and the proportion of individuals over 80 is also likely to increase. Given that the population is aging and life expectancy is increasing, elderly patients who have lost their teeth will also increase. Impaired masticatory function caused by tooth loss is a risk factor for cognitive decline and frailty, and neglecting to treat tooth loss is a critical issue. In this report, 5 patients over 80 requested dental implants for new missing teeth and underwent immediate implant placement. All patients were treated by the same surgeon using the same technique, materials, and dental implants. Five elements were measured for the peri-implant bone from the cone-beam computed tomography images. All patients were followed for 3 or more years and exhibited good progress without any abnormal findings in their oral cavities or notable radiographic abnormalities such as bone absorption or peri-implantitis. Compared with conventional treatment with delayed placement, combining immediate implant placement and regenerative medicine for fixed superstructures may be the better option for missing tooth replacement if the conditions are suitable. Thus, this treatment modality may improve the quality of life in elderly patients, especially super elderly patients.
Effect of Clinical Experience on Accuracy of Implant Placement Using Dynamic Navigation and Static Guidance: An In Vitro Study.
Fang Q, Lozada J, Kan J … +2 more , Al-Ardah A, Li Y
J Oral Implantol · 2024 Dec · PMID 39231244 · Publisher ↗
This study aimed to investigate the accuracy of implants placed by clinicians with varying dental implant experience using dynamic navigation (DN) and static guidance (SG). Sixty identical custom-made, drillable maxillar...
This study aimed to investigate the accuracy of implants placed by clinicians with varying dental implant experience using dynamic navigation (DN) and static guidance (SG). Sixty identical custom-made, drillable maxillary models were fabricated, missing the right central incisor (#8) and left first molar (#14) with simulated gingival tissue. Models planned with a DN system and guided surgery software were randomly allocated to an experienced clinician, an inexperienced clinician, and a nonexperienced clinician. The accuracy of implant placement was evaluated by overlaying the preoperative virtual surgical plan with the postoperative cone beam computerized tomography scan. Deviations between the placed and planned implants were quantified using a mathematical algorithm. Independent-sample t tests revealed significant differences (p < .001) in angular deviation but not in coronal and apical deviations when comparing DN with SG for all 3 clinicians. One-way analysis of variance and Tukey post hoc test found no significant differences between clinicians of varying dental implant experience in DN and SG groups. The study concluded that the level of dental implant experience and surgical site do not significantly impact the accuracy of implant placement when either DN or SG is used, and DN produced less angular deviation in comparison with SG. This finding suggests DN could benefit clinical settings, particularly for less experienced clinicians.
Regulation of Osteogenic and Angiogenic Markers in Alkali-Treated Titanium for Hard Tissue Engineering Applications.
Chowdhury PR, Kling D, Markiewicz MR … +2 more , Bothwell P, Vahabzadeh S
J Oral Implantol · 2024 Dec · PMID 39227154 · Publisher ↗
Titanium (Ti) and Ti alloys are of great interest in bone and dental tissue engineering applications due to their biocompatibility, corrosion resistance, and close mechanical properties to natural bone. However, the form...
Titanium (Ti) and Ti alloys are of great interest in bone and dental tissue engineering applications due to their biocompatibility, corrosion resistance, and close mechanical properties to natural bone. However, the formation of fibrous tissue prevents osteointegration and results in implant loosening. Thus, physical and chemical methods are used to improve the surface properties of Ti. This study aimed to understand the role of alkali treatment conditions, including alkali medium concentration, temperature, rotation speed, and post heat treatment. Our results show that alkali treatment using 5 and 10 molar sodium hydroxide (NaOH) solution allows the formation of web-like microstructure. However, a higher concentration of 15 molar resulted in cracks along the surface. Interaction between the human fetal osteoblast cells and Ti samples showed that heat treatment is necessary for increased cellular proliferation, which was not significantly different at later time points compared with the polished Ti. Alkali heat treatment did not induce inflammatory reactions at later time points. It showed an increase in vascular endothelial growth factor, osteoprotegerin/nuclear factor kappa-Β ligand ratio, and osteocalcin expression, which is evidence for accelerated osteoblast cell maturation and bone remodeling in surface-modified samples. Together, these data show that alkali treatment using 5 or 10 molar of NaOH followed by heat treatment may have a therapeutic effect and assist with bone tissue integration with Ti implant.
Survival Rate and Esthetic Outcomes of 2-Piece Zirconia Dental Implants: A 1-Year Single Clinical Trial of Partially Edentulous Patients.
Mayer Y, Ginesin O, Rotenberg D … +5 more , Kabakov L, Gabay E, Horwitz J, Gutmacher Z, Zigdon Giladi H
J Oral Implantol · 2024 Dec · PMID 39177692 · Publisher ↗
Titanium dental implants, traditionally used for tooth replacement, face certain biological and esthetic limitations. Recently, zirconia has become a notable alternative, valued for its esthetics and biocompatibility. Th...
Titanium dental implants, traditionally used for tooth replacement, face certain biological and esthetic limitations. Recently, zirconia has become a notable alternative, valued for its esthetics and biocompatibility. This study evaluated the efficacy of 2-piece zirconia dental implants, particularly their impact on inflammatory cytokines and their survival rate over 1 year. This study was a single-center, prospective trial and included adults aged 18 and above. From 2021 to 2022, 9 2-piece, tissue-level zirconia implants were placed in 8 patients. Following a 3-month osseointegration phase, crowns were cemented. Over a year, we assessed plaque and gingival indices, pocket depth, and tissue color and texture. Peri-apical radiographs measured bone levels, and IL-1β in peri-implant crevicular fluid was quantified using the enzyme-linked immunosorbent assay. Eight subjects (ages 31-63) participated. One implant failed after 6 months, resulting in a 1-year survival rate of 88.8%. Plaque and gingival indices rose, but peri-implant soft tissue remained stable in color and texture. At 12 months, average bone loss was minimal and insignificant compared with the baseline, and IL-1β levels were similar to those at contralateral teeth with no correlation between IL-1β, pocket depth, and bleeding on probing. Two-piece zirconia implants emerged as a viable tooth replacement option with an 88.8% 1-year survival rate. They maintained stable soft tissue and bone levels, indicating their potential as effective dental restoratives.
Bone Regeneration in the Anterior Maxilla With Titanium Mesh and Advanced-Platelet-Rich Fibrin: A Case Report With 2-Year Follow-up.
Araújo CRG, Araújo RC, Araújo CG … +4 more , Carvalho AP, Cota LOM, Martins-Júnior PA, Pelegrine AA
J Oral Implantol · 2024 Oct · PMID 39158854 · Publisher ↗
Guided bone regeneration involving the use of titanium mesh and platelet-rich fibrin could be a feasible approach in cases of severely atrophic ridges. The purpose of this case report was to present an esthetic and funct...
Guided bone regeneration involving the use of titanium mesh and platelet-rich fibrin could be a feasible approach in cases of severely atrophic ridges. The purpose of this case report was to present an esthetic and functional rehabilitation in the anterior maxilla with the installation of dental implants in conjunction with guided bone regeneration using titanium mesh and advanced platelet-rich fibrin (A-PRF). A 60-year-old patient presented bone atrophy and partial edentulism in the anterior maxilla. After clinical and cone beam computed tomography assessment, guided bone regeneration was planned using a titanium mesh and A-PRF with xenograft bone. After 8 months of healing, the dental implants were placed with the aid of a surgical guide to obtain accurate 3-dimensional positioning. Prosthetic rehabilitation was carried out with individualized crowns. After 2 years of follow-up, radiographic analysis demonstrated a good quality and density of the bone tissue adjacent to the dental implants. No radiolucent areas were observed, and there were no clinical signs of failure. In cases of severe atrophy, using a titanium mesh and A-PRF proved to be a feasible alternative for bone reconstruction prior to dental implant placement. This approach can aid dental professionals in achieving an ideal implant positioning for rehabilitation with individualized crowns.
Evaluating Osteogenic Cell Differentiation Efficacy in the Presence of Polylactide Samples With Varied Compositions for Bone Grafting: In Vitro Study.
Lozada JL, Zernitckaia EA, Yaremenko AI … +1 more , Reutova AP
J Oral Implantol · 2024 Oct · PMID 39140139 · Publisher ↗
In oral implantology, surgeons often confront the need to improve alveolar bone quality and volume before implantation in patients with bone defects. Whereas guided bone regeneration with titanium meshes is a clinical go...
In oral implantology, surgeons often confront the need to improve alveolar bone quality and volume before implantation in patients with bone defects. Whereas guided bone regeneration with titanium meshes is a clinical gold standard for bone augmentation, mesh removal pre-implantation presents a drawback. This study explores biodegradable scaffolds as an alternative. The research investigates the impact of various compositions of customized bone-grafting scaffolds on proliferation and osteogenic differentiation processes in vitro. Plates (10 × 10 × 0.5 mm) were fabricated from polylactide (PLA), PLA with 15% hydroxyapatite nanoparticles (PLA/HA), and polylactide with glycolic acid copolymers (PLGA 60:40 and 85:15). Gingival fibroblasts assessed the influence of experimental samples on proliferation and osteogenic differentiation in a low-glucose medium. Osteogenic differentiation was induced, and alizarin red staining measured extracellular matrix calcification via spectrophotometry. Active proliferation of gingival fibroblasts occurred along scaffold edges during cultivation. Although cells proliferated with experimental samples, rates were lower than control cells. PLA/HA showed higher alizarin red staining intensity, indicating enhanced matrix calcification. Experimental samples (PLA, PLA/HA, PLGA 85:15, PLGA 60:40) supported cell proliferation at lower rates than control. PLA/HA demonstrated increased matrix calcification. Biodegradable membranes were nontoxic, suggesting potential for bone augmentation.
Periodontal and Peri-Implant Oral Diseases as a Public Health Crisis.
Chaar EE, Rutkowski J
J Oral Implantol · 2024 Aug · PMID 39116455 · Publisher ↗
Abstract loading — click title to view on PubMed.
Association Between Proton Pump Inhibitor Use and the Severity of Periodontal Disease and Peri-Implantitis: A Systematic Review.
Vedaei A, Salimi Y, Iranshahi Z … +14 more , Sadighnia N, Taheri H, Eyvani M, Bagherianlemraski M, Taheri Z, Khanmohammadi MM, Bina S, Kavousi A, Bagheri-Hosseini S, Mosaddad SA, Azimi N, Valipour R, Atarodi SM, Deravi N
J Oral Implantol · 2024 Dec · PMID 39104153 · Publisher ↗
This systematic review investigates the probable effect of proton pump inhibitor (PPI) use on the severity of periodontal disease and peri-implantitis and implant survival. We conducted a literature search in PubMed, Sco...
This systematic review investigates the probable effect of proton pump inhibitor (PPI) use on the severity of periodontal disease and peri-implantitis and implant survival. We conducted a literature search in PubMed, Scopus, and Cochrane Central Library up to April 2024. Two review authors independently screened the title and abstracts and then the full texts of retrieved studies. Observational and clinical trial studies that assessed the association between PPI use and periodontal disease severity and peri-implantitis or implant survival were included. Data extraction from the included studies was done by 2 reviewers independently. Of 940 studies initially retrieved from online searching, 7 met the inclusion criteria. Three studies examined periodontitis, whereas 4 focused on peri-implantitis and implant longevity. On the contrary, evidence regarding the impact of PPI use on peri-implantitis and implant survival is conflicting. Therefore, more well-designed randomized controlled trials are warranted to come to a definite conclusion. Because PPIs alter the gut microbiome and affect bone, plus that the pathogenesis and etiology of periodontal disease are affected by bacteria within the periodontal pocket, it is hypothesized that they may affect periodontal pathogenesis.
Prevalence of Decay and Tooth Condition Changes Adjacent to Restored Dental Implants: A Retrospective Radiographic Study.
Kutkut A, White R, Awad M … +4 more , Brown J, Sharab L, Hawk GS, Miller CS
J Oral Implantol · 2024 Oct · PMID 39069796 · Publisher ↗
This study examined the association between a dental implant and changes in adjacent teeth over time. Electronic health records of 1818 patients who received a dental implant were retrospectively evaluated over 14 years...
This study examined the association between a dental implant and changes in adjacent teeth over time. Electronic health records of 1818 patients who received a dental implant were retrospectively evaluated over 14 years (2005-2019) in a university setting. The status of the adjacent tooth and vertical and horizontal distance from the implant platform to adjacent teeth were determined using digital intraoral radiographs taken at baseline and the last follow-up visit (1-14 years, median 4 years). In total, 1085 dental implants were evaluated. There were 234 instances of a change in the adjacent tooth. Decay was observed in 83 (7.6%) of adjacent teeth; the mean time to development was 4 years (range 1-14 years). Approximately 9% of adjacent teeth received direct restorations, 4.8% received indirect restorations, 1% received endodontic root canal treatment, and 5.6% were extracted. The mean horizontal distance between the implant platform and the adjacent teeth was 3.56 mm; the mean vertical distance from the contact point to the alveolar crest on the tooth side was 6.2 mm at the first time of the reported decay on X ray. These distances did not significantly influence the occurrence of caries. The prevalence of interproximal contact loss was higher on the mesial of the implant crown at 63% compared with 20% on the distal side. This large retrospective analysis identified that teeth adjacent to a dental implant were at risk of decay and changes in their condition. In addition, the implant-to-tooth distance and inadequate emergence profile may contribute as caries risk factors in addition to hygiene and a high sugar level diet. These findings appear essential for clinicians when making treatment decisions and discussing outcomes with patients.
In Vitro Comparison of Titanium Disc Surface Roughness and Bacterial Colonization After Ultrasonic Instrumentation With Three Different Tips.
Kitaygorodskiy A, Gregory RL, Lim G … +1 more , Hamada Y
J Oral Implantol · 2024 Oct · PMID 39023858 · Publisher ↗
During implant maintenance, preserving a smooth surface on the machined transmucosal abutment is critical to reduce biofilm attachment and colonization. The present study compared the surface roughness and bacterial colo...
During implant maintenance, preserving a smooth surface on the machined transmucosal abutment is critical to reduce biofilm attachment and colonization. The present study compared the surface roughness and bacterial colonization of machined titanium surfaces after instrumentation with various materials. Forty-four machined grade 23 titanium discs were instrumented with a round polyether ether ketone (PEEK) tip, a plastic curette tip, or a pure titanium curette tip with piezoelectric devices. Before and after instrumentation, the surface roughness (Ra and Rz) values were analyzed with a profilometer and scanning electron microscopy (SEM). Streptococcus sanguinis was cultured and incubated for 24 hours on the instrumented discs, and colony-forming units per milliliter were obtained for each group. Samples instrumented with the metal ultrasonic tip significantly increased surface roughness compared with the other groups. This resulted in greater colonization by S. sanguinis than surfaces instrumented with PEEK tips or the negative control. Samples instrumented with PEEK and plastic tips did not exhibit any statistically significant increase in surface roughness, and SEM analysis revealed a significantly rougher surface of discs instrumented with metal compared with discs instrumented with plastic or PEEK tips despite the possibility of debris from tip dissolution. Our results suggest that instrumentation with metal ultrasonic tips with piezoelectric devices significantly increased machined titanium's surface roughness and elicited higher biofilm formation in vitro. Meanwhile, instrumentation of machined titanium with PEEK or plastic ultrasonic tips did not affect the surface roughness or bacterial adhesion.
Comparative Evaluation of the Accuracy of Dynamic Navigation and Free Hand Methods During Zygomatic Implant Placement: A Randomized Controlled Trial.
Penmetsa GS, Shah RM, Raju MAKV … +2 more , Gadde P, Alluri Venkata R
J Oral Implantol · 2024 Oct · PMID 39015953 · Publisher ↗
To assess and compare the precision and predictability of zygomatic implants in atrophic maxilla using conventional and dynamic navigation methods. This study was a randomized controlled clinical trial conducted in patie...
To assess and compare the precision and predictability of zygomatic implants in atrophic maxilla using conventional and dynamic navigation methods. This study was a randomized controlled clinical trial conducted in patients requiring zygomatic implant placements in the atrophic maxilla. Forty zygomatic implants were placed in systemically healthy individuals. Zygomatic implant placement was done using the freehand technique in the control group, and the test group involved implant placement using a dynamic navigation system, and the entry, apex, and angular deviations were evaluated. The mean deviations at the site of entry (2D) in the navigation system (2.531.42) as compared with the freehand (4.151.29) were statistically significant. The variation in the freehand group was greater than the navigation method at the apex (3D) (P < .05). The navigation method had a higher accuracy in angular deviation than the freehand method (4.02 ± 1.80 and 12.67 ± 2.11). Also, the accuracy was checked on the right and left sides in both the conventional and dynamic groups. The dynamic navigation technology had better predictability in terms of accuracy and precision, and it is the need of the hour for clinicians to master this technology and thereby aid in better prognostic level of implant placements.
Occlusal Reconstruction by Maxillary Bone Grafting, Dental Implants and Orthognathic Surgery After Facial Trauma.
Ozaki H, Sakurai H, Igarashi K … +3 more , Takahashi Y, Haga T, Mitsuyoshi I
J Oral Implantol · 2024 Oct · PMID 38979578 · Publisher ↗
Abstract loading — click title to view on PubMed.
Modified Roll Envelope Technique Combined With Apically Repositioned Flap (MRARF) for Peri-Implant Soft Tissue Augmentation-A Case Series.
Wang Z, Lei L, Wei Y … +2 more , Xu H, Chen L
J Oral Implantol · 2024 Oct · PMID 38979575 · Publisher ↗
In the present case series, we performed implant surgery using a modified roll envelope technique and an apically repositioned flap (MRARF). To improve patients' peri-implant soft tissue phenotypes, they underwent dental...
In the present case series, we performed implant surgery using a modified roll envelope technique and an apically repositioned flap (MRARF). To improve patients' peri-implant soft tissue phenotypes, they underwent dental implantation following the buccal contour concavities, inadequate keratinized tissue width, and soft tissue thickness simultaneously. This case series includes 4 patients treated between July 2021 and February 2022 who received dental implants and guided bone regeneration treatment 6 months earlier and were to be taken up for second-stage surgery. They were eligible for the MRARF technique if each implant site showed a labial and buccal deficiency and a reduced keratinized mucosa width than the adjacent teeth. Sutures were removed 2 weeks after surgery, and a provisional restoration was delivered. A final impression was taken at 6 weeks to produce the definitive implant-supported restoration. All surgery sites healed uneventfully, and no postoperative pain or excessive swelling was reported. The modified flap design allowed for increasing the width and thickness of keratinized mucosa with a minimally invasive technique. A harmonious color, texture, and mucogingival junction position that matched the surrounding tissue and adjacent teeth was achieved, and all patients were satisfied with the final results. MRARF at second-stage implant surgery could obtain satisfactory results regarding vertical and horizontal aesthetic gingival contours and an adequate width and thickness of keratinized mucosa around the implants.
Demineralized, Freeze-Dried Allogeneic Bone Blocks With Suture Fixation Technique for Reconstruction of Maxillary Alveolar Bone Deficiency: A Case Series.
Dong C, Zheng S, Xia Z … +4 more , Chen R, Zheng Y, Yang F, Wang L
J Oral Implantol · 2024 Oct · PMID 38967002 · Publisher ↗
This study aims to evaluate the clinical outcomes of using demineralized, freeze-dried allogeneic bone blocks (DFDABB) combined with the periosteal vertical mattress suture (PVMS) technique for the reconstruction of seve...
This study aims to evaluate the clinical outcomes of using demineralized, freeze-dried allogeneic bone blocks (DFDABB) combined with the periosteal vertical mattress suture (PVMS) technique for the reconstruction of severe horizontal alveolar bone deficiencies in the maxilla. In continuous horizontal maxillary defects cases, bone augmentation was performed using DFDABB and deproteinized bovine bone matrix (DBBM) filling the interstice. Subsequently, a resorbable collagen membrane was carefully placed over the graft surface, and both the membrane and bone graft were firmly secured using the PVMS technique. Linear changes were assessed through superimposed cone-beam computerized tomography scans obtained before the operation and after a healing period of 6-10 months. A total of 7 female patients with 10 bone blocks and 13 implants were included in this study. One of the wounds was slightly ruptured postoperatively without infection, and all implants showed successful osseointegration. The average alveolar ridge width at a point 5 mm below the crest was 4.52 ± 2.03 mm before bone graft and 9.79 ± 1.57 mm after implantation with an average increase of 5.26 ± 1.97 mm. Similarly, at a point 10 mm below the crest, the pregraft alveolar ridge width measured 7.23 ± 3.60 mm, and postimplantation, it expanded to 11.81 ± 2.90 mm, showing an average gain of 4.58 ± 2.01 mm. This case series demonstrates the successful application of DFDABB combined with the PVMS technique to achieve adequate bone width for implantation at severe continuous horizontal bone deficiency of the maxilla. DFDABB with the PVMS technique resulted in superior horizontal bone gain during maxillary bone augmentation with horizontal continuity deficiency. However, further studies are necessary to validate these findings.
Effect of Inter-Implant Distance on Fracture Resistance of Implant-Supported Provisional Fixed Dental Prosthesis.
Balwani D, Hegde R, Hegde C
J Oral Implantol · 2024 Oct · PMID 38962860 · Publisher ↗
This study aimed to identify the ideal interimplant distance for optimum outcome on immediately loaded implant supported prosthesis. Hence this study was taken up to analyze the effect of varying interimplant distance on...
This study aimed to identify the ideal interimplant distance for optimum outcome on immediately loaded implant supported prosthesis. Hence this study was taken up to analyze the effect of varying interimplant distance on fracture resistance of implant supported provisional fixed dental prosthesis (FDP). A total of 24 bis-acrylate composite resin samples were prepared. Interimplant distance was present in the metal die for placement of dummy implants at distances of 14 mm, 21 mm, and 30 mm respectively. Wax-up for 3-unit, 4-unit, and 5-unit implant-supported provisional restoration was made. Silicone molds were used for making multiple interim prostheses using bis-acrylate composite material. All samples were subjected to fracture test in the universal testing machine with a crosshead speed of 1 mm/min. All samples were loaded with gradual force starting from 100 N until it fractured. The load was applied at the center of prosthesis. Data was analyzed by one-way analysis of variance and Bonferroni post hoc test. Mean fracture resistance of 3-unit provisional FDP at 14 mm of interimplant distance showed 1342.61 ± 179.15 N. Mean fracture resistance of 4-unit provisional FDP at 21 mm of interimplant distance showed 1420.44 ± 170.37 N. Mean fracture resistance of 5-unit provisional FDP at 30 mm of interimplant distance showed 791.61 ± 203.59 N. Both 14 mm and 21 mm of interimplant distance are suitable span lengths to be considered for the optimum outcome during immediately loading with implant-supported provisional restorations. Limitations of the study were that force application was static in nature and not dynamic and the arch form was not "U" shaped but longitudinal using Bis-Acryl material only with no cantilever. Future studies can be done to evaluate the fracture resistance of bis-acrylate material considering biomechanics and arch form of natural dentition. Distal cantilever should be considered along with different material for fabricating provisional restoration.
Scalp-Split Technique: A Concept of Bone Splitting and Expansion for Thin Alveolar Ridges to Place Dental Implants.
Wimalarathna A, Amaratunga P
J Oral Implantol · 2024 Oct · PMID 38962854 · Publisher ↗
Bone expansion is when the existing bone at the implant site is split and separated to create a gap to widen it. This article introduces a novel concept of bone expansion for the ultrathin alveolar ridges to place dental...
Bone expansion is when the existing bone at the implant site is split and separated to create a gap to widen it. This article introduces a novel concept of bone expansion for the ultrathin alveolar ridges to place dental implants with zero wastage of existing natural bone in long-term edentulous arches. Instead of using twist drills and piezo surgery kits, the bone is split with a surgical scalpel blade to prevent natural bone wastage. The split helps to expand the bone horizontally by using expanders to accommodate the smaller diameter implants. This technique was applied to 12 individuals to rehabilitate their atrophic edentulous mandibles to facilitate the implant-supported overdentures, and it revealed that all the cases achieved successful osseointegration after placing implants following this method. The scalp-spilt technique is promising for providing implant-retained or implant-supported prostheses over ultrathin edentulous alveolar ridges.
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