The International journal of oral & maxillofacial implants最新文献

{"title":"Influence of Dental Implant Diameters on Prosthesis Complications: A Systematic Review and Meta-analysis.","authors":"Yu-Ting Yeh, Lan-Lin Chiou, Hsuan-Hung Chen, Guo-Hao Lin, Richard T Kao, Donald A Curtis","doi":"10.11607/jomi.10964","DOIUrl":"10.11607/jomi.10964","url":null,"abstract":"<p><strong>Purpose: </strong>To analyze the risk of prosthesis complications for dental implants across different diameters.</p><p><strong>Materials and methods: </strong>An electronic search in PubMed (MEDLINE), Embase, Scopus, and Cochrane Central Register of Controlled Trials until December 2023 was performed. Studies that compared implant prosthesis complications among the following implant types were included: extra-narrow (EDNIs; < 3.0 mm), narrow (NDIs; ≥ 3.0 to < 3.75 mm), standard (SDIs; ≥ 3.75 to < 5 mm), and wide-diameter (WDIs; ≥ 5 mm) implants. Meta-analyses were performed to evaluate the risk ratio of prosthesis complications across different diameters, particularly in non-full-arch implant-supported fixed dental prostheses (ISFDPs).</p><p><strong>Results: </strong>A total of 18 clinical studies were included. In non-full-arch ISFDPs, the most prevalent complication was screw loosening in NDIs, SDIs, and WDIs (1.73%, 4.08%, and 12.45%, respectively) and decementation (3.4%) in ENDIs. In implant overdentures, ENDIs, NDIs, and SDIs demonstrated high rates of retentive cap wear (58.33%, 80.49%, and 70%, respectively), whereas WDIs had 16.67% overdenture repair. The meta-analyses showed a risk ratio of 0.20 (95% CI = 0.04 to 0.94, P = .04) and 0.17 (95% CI = 0.06 to 0.45, P < .0004) for abutment fracture in single crowns and ISFDPs comparing NDIs and SDIs. No significant differences in risk ratios were observed for screw loosening, decementation, porcelain chipping, fracture, or screw fracture among the different diameter groups.</p><p><strong>Conclusions: </strong>This systematic review highlights that screw loosening and retentive cap wear are the most common prosthesis complications in ISFDPs and overdentures, regardless of implant diameter. While NDIs have a lower risk of abutment fracture compared to SDIs, clinicians should carefully consider patient characteristics, implant locations, and abutment features when selecting the ideal implant diameter.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"529-546"},"PeriodicalIF":1.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143071167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 Laser Irradiation Positively Affects the Surface Energy of Rough Titanium Surfaces.","authors":"Georgios Romanos, Mohit Varma","doi":"10.11607/jomi.11097","DOIUrl":"10.11607/jomi.11097","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate the free surface energy before and after CO2 irradiation on rough titanium (Ti) surfaces.</p><p><strong>Materials and methods: </strong>Sandblasted, large grit, acid-etched (SLA) implant surfaces were used for this study. Contact angle evaluations were performed for saline, albumin, and artificial blood using a contact angle goniometer at 25°C and 37°C (20 droplets in each group, 120 in total). The Ti disks were then irradiated with a CO2 laser (10,600 nm) using a noncontact, defocused, 2-W continuous wave for 30 seconds. Contact angle measurements for saline, albumin, and artificial blood were evaluated immediately after irradiation (new 120 in total contact angle measurements) and compared with the measurements before laser irradiation. A paired t-test using SPSS statistics (IBM) was performed for 5% statistical significance level.</p><p><strong>Results: </strong>Lower numbers of contact angle measurements were found after CO2 irradiation, and these changes were statistically significant (P < .05) for all groups, except for albumin at 25°C, as follows: saline at 25°C-(pre) 111.97°C ± 13.67°C and (post) 79.29°C ± 10.83°C (P < .0001); albumin at 25°C-(pre) 89.04°C ± 12.02°C and (post) 83.29°C ± 20.71°C (P = .297); blood at 25°C-(pre) 97.79°C ± 14.44°C and (post) 86.29°C ± 10.82°C (P = .019); saline at 37°C-(pre) 104.12°C ± 13.138°C and (post) 92.66°C ± 4.777°C (P = .001); albumin at 37°C-(pre) 89.04°C ± 12.02°C and (post) 83.29°C ± 20.71°C (P =.297); blood at 37°C-(pre) 80.42°C ± 19.00°C and (post) 58.62°C ± 24.34°C (P = .012).</p><p><strong>Conclusions: </strong>CO2 laser irradiation in general positively affected the wettability and hydrophilicity of rough Ti SLA surfaces.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"636-642"},"PeriodicalIF":1.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142376495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peri-implantitis Risk Assessment (PiRA) Part 1: Umbrella Review of a Multifactorial Disease with Many Risk Factors.","authors":"Mihai Tarce, Marc Quirynen","doi":"10.11607/jomi.11107","DOIUrl":"10.11607/jomi.11107","url":null,"abstract":"<p><strong>Purpose: </strong>To identify relevant preoperative risk factors for peri-implantitis and provide an overview of their relative impact to reduce the incidence of the disease, which may be helpful in convincing patients to change their lifestyle-thereby reducing risk factors-or to forgo implant therapy in high-risk conditions.</p><p><strong>Materials and methods: </strong>An umbrella review was performed to identify patient-related risk factors and their relative impact (odds ratio/relative risk). Potential treatment-related confounders for the development of peri-implantitis were also searched for.</p><p><strong>Results: </strong>Ten relevant patient-related risk factors for peri-implantitis were identified. While some of them are modifiable (smoking, bleeding on probing, plaque control, number of sites with PPD ≥ 5 mm, recall frequency, and occlusal overload), others are not (history of periodontitis, implant location, number of teeth lost, and systemic diseases). The relative impact of these factors differed largely between systematic reviews, most of which unfortunately limited their analysis to one or only a few factors. Without taking other factors into consideration, these studies have a risk of result misinterpretation or overrating the results. Moreover, patients' susceptibility might change due to a number of confounders (iatrogenic factors, surgical protocol, implant and implant site characteristics, etc), and these factors should also be considered.</p><p><strong>Conclusions: </strong>The number of risk factors and potential confounders underlie the complexity and multifactorial etiology of peri-implantitis.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"555-562"},"PeriodicalIF":1.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144287635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence of Peri-implant Diseases and Association with Risk Factors: A Prospective Cross-Sectional Clinical Study.","authors":"Cássia Ferraz Fernandes Lima Lopes, Bruno Gomes Dos Santos Martins, Sérgio Henrique Gonçalves Motta, Carmelo Sansone, Juliana Campos Hasse Fernandes, Gustavo Vicentis Oliveira Fernandes","doi":"10.11607/jomi.11588","DOIUrl":"https://doi.org/10.11607/jomi.11588","url":null,"abstract":"<p><strong>Purpose: </strong>The goal of this prospective cross-sectional study was to evaluate the prevalence of peri-implant diseases and factors associated with their occurrence in patients rehabilitated with osseointegrated dental implants.</p><p><strong>Material and methods: </strong>Seventy-seven patients with 343 dental implants, in function for at least one year, was enrolled. Clinical and radiographic evaluations were performed, and cases were classified according to the current classification definitions. Descriptive analyses of the complication prevalence were conducted. Risk indicators for peri-implant mucositis and peri-implantitis at the patient level were analyzed using binary logistic regression, and a generalized estimating equation was applied at the implant level.</p><p><strong>Results: </strong>Of the 77 participating individuals, 6 (7.8%) showed peri-implant health, 4 (5.2%) had clinical stability, 35 (45.5%) presented with mucositis, and 32 (41.6%) had peri-implantitis. Among the 343 implants analyzed, 134 (39.1%) had peri-implant health, 13 (3.8%) were clinically stable, 140 (40.8%) had mucositis, and 56 (16.3%) presented with peri-implantitis. Bleeding on probing and the external hexagon platform were significantly associated with mucositis. An increased number of implants per patient, active periodontal disease, and an internal hexagon platform were significantly associated with peri-implantitis. Preventive maintenance did not show a significant association with biological disorders.</p><p><strong>Conclusion: </strong>These findings suggest that biological peri-implant complications are highly prevalent and may be associated with various patient- and implant-related risk factors, consistent with existing literature. Such characteristics should be considered during early planning stages to help minimize peri-implant biological complications.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-30"},"PeriodicalIF":1.7,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145093132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Insertion Torque-Depth Curve Integral and Implant Micromotion: A Study on Polyurethane Foam Blocks.","authors":"Anna De Marzi, Paolo Arosio, Federico Arosio, Giorgia Franchin, Danilo Alessio Di Stefano","doi":"10.11607/jomi.11429","DOIUrl":"https://doi.org/10.11607/jomi.11429","url":null,"abstract":"<p><strong>Purpose: </strong>This in vitro study aimed to investigate the relationship between the torque-depth integral (I) and implant micromotion.</p><p><strong>Materials and methods: </strong>Cylindrical and tapered-cylindrical implants were inserted into monolithic polyurethane foam blocks, featuring three different densities, after undersized, standard, oversized preparation, and the integral (I), as well as the insertion torque (IT), were measured through a torque-measuring micromotor. Micromotion was measured by applying a lateral load to abutments mounted on implants and recording displacement through a tensile testing machine. I-micromotion and IT-micromotion relationships were studied by regression analyses.</p><p><strong>Results: </strong>Significant inverse nonlinear relationships (p<0.001) were observed between (I) and micromotion, as well as IT and micromotion, across all implant designs and preparation protocols, according to a negative-power equation. No statistically significant differences were found between the slopes of (I)-micromotion and IT-micromotion curves.</p><p><strong>Conclusions: </strong>Results of the present study provide additional evidence that the torque-depth integral (I) is a reliable primary stability-measuring parameter. Yet, tests should be repeated on materials more similar to bone, and applying axial instead of lateral loads to implants.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-22"},"PeriodicalIF":1.7,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145093274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stability, Micromotion, and Microstrain in Short Implants with High C/I Ratios: Combined In Vitro and Finite Element Analysis Approach.","authors":"Daniel Robles, Saray Fernandez-Hernández, Miquel Punset, Meritxell Molmeneu, Javier Gil, Esteban Pérez-Pevida, Aritza Brizuela-Velasco","doi":"10.11607/jomi.11547","DOIUrl":"https://doi.org/10.11607/jomi.11547","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the biomechanical behavior of short dental implants (4 mm) compared to longer implants (6-8-10 mm), especially in high crown-to-implant ratio scenarios. The study evaluates implant stability, micromotion under loading, and peri-implant bone microstrain, and investigates the effect of prosthetic splinting as a biomechanical strategy.</p><p><strong>Materials and methods: </strong>Fifty implants with internal connections (Ø 4-6-8-10 mm) were placed in nine fresh bovine ribs and restored with standardized polymethylmethacrylate (PMMA) crowns to achieve C/I ratios of 1.22 (10 mm implants), 1.77 (8 mm), 2.7 (6 mm), and 4.55 (4 mm). Using resonance frequency analysis (RFA) and controlled loading (50N, 6° angulation), implant stability and micormotion were evaluated by image-based analysis. A subset of 4-mm implants was tested with a splinted PMMA bridge. Finite element analysis FEA) using models consistent with the in vitro setup was performed to evaluate bone microstrain, von Mises stress, and displacement.</p><p><strong>Results: </strong>Implant stability (ISQ values) increased significantly with implant length, with the 10-mm group having the highest values (mean ISQ = 68.4, p < .05). Micromotion and FEA displacement were inversely correlated with implant length and positively correlated with the C/I ratio. The 4-mm implants had significantly higher micromotion and microstrain values, but splinting significantly reduced both parameters and achieved performance comparable to longer implants. Von Mises stress values in the peri-implant bone and abutments were highest in the 4mm.group.</p><p><strong>Conclusion: </strong>Short dental implants correlate with poorer values for dental implant stability than conventional implants. High C/I ratios in short implants are associated with increased micromovement and microloading of the bone, but splinting improves biomechanical performance and may be advisable when using short implants, especially in immediate loading protocols.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-26"},"PeriodicalIF":1.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing Intraoral Scanning Accuracy for Mandibular Edentulous Arches Using Resin Markers: An In Vitro Study.","authors":"Hongseok An, Molly Tess McCoy, Despoina Bompolaki","doi":"10.11607/jomi.11396","DOIUrl":"10.11607/jomi.11396","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to evaluate the accuracy of IOS for edentulous mandibular implant scanning, when intraoral resin markers are incorporated. Two commonly used intraoral scanners were assessed under simulated oral mucosa conditions to determine the effect of resin markers on IOS accuracy.</p><p><strong>Materials & methods: </strong>A mandibular study model with four implants and simulated unattached mucosa was fabricated. The model was scanned using two intraoral scanners (Trios4, 3Shape A/S; Primescan, Dentsply Sirona), both with and without flowable composite resin markers applied between scan bodies. A total of 30 scans were captured per scanner (15 without markers, 15 with markers), resulting in four IOS groups: TR (Trios4), PS (Primescan), TRmark (Trios4 with markers), and PSmark (Primescan with markers). Indirect digitization was performed via conventional impressions, stone model fabrication, and laboratory scanning (IND group). A reference scan (REF) was obtained using a high-accuracy laboratory scanner (E4, 3Shape A/S). All scan files were analyzed in Geomagic Control software. Root-mean-square (RMS) values were calculated for trueness and precision. The Kruskal-Wallis test was used to evaluate group differences, followed by pairwise comparisons (α = .05).</p><p><strong>Results: </strong>Trueness analysis revealed significant differences among groups (p < .001). IND exhibited the highest trueness, followed by TRmark, PSmark, and PS, while TR showed the lowest trueness. Precision analysis indicated a significant influence of the scanning method (p < .001). PSmark, TRmark, and IND showed the highest precision, and TR had the lowest precision. The addition of resin markers significantly improved both trueness and precision for Trios4.</p><p><strong>Conclusions: </strong>Indirect digitization remains the most accurate method for full-arch implant scanning. Scanner type affects IOS accuracy, with Primescan demonstrating higher accuracy than Trios4 without resin markers. Resin markers significantly improved IOS accuracy, particularly for Trios4, where both trueness and precision increased.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-22"},"PeriodicalIF":1.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Any blinded information will be available then. Long-Term (> 20 years) Evaluation and Analysis of Failure Risk Factors of Laser-Lok® Dental Implants in Patients Attending a Private Practice Setting: A Retrospective Audit.","authors":"Renzo Guarnieri, Rodolfo Reda, Alessio Zanza, Gabriele Miccoli, Rosemary Abbagnale, Dario Di Di Nardo, Luca Testarelli","doi":"10.11607/jomi.11539","DOIUrl":"https://doi.org/10.11607/jomi.11539","url":null,"abstract":"<p><p>The present study was aimed to evaluate the findings of Laser-Lok® (LL) dental implants in various clinical indications, inserted in a private practice setting and monitored for more than 20 years, statistically analyzing the associate failure risk factors.</p><p><strong>Materials and methods: </strong>Data of patients receiving LL dental implants and whose prosthetic reconstruction in the period 2000-2005 in a private practice clinic were retrospectively evaluated and statistically analyzed. Kaplan-Meier survival curve was used to determine the cumulative survival rate (CSR), and a binary generalized estimating equation model (GEE) was used to evaluate the influence of various factors on CSR.</p><p><strong>Results: </strong>Between January of 2000 and December of 2005, 730 LL implants were placed in 312 patients for a variety of clinical indications. Following implant placement, patients were checked at follow-up visits every six months for an average of 16.8 years. The Kaplan-Meier cumulative survival rate (CSR) at 5, 10, 15, and 20 years were 98.2%, 97.1%, 95.8%, and 95.3% respectively. Seven factors were identified associated with late implant failures: male, smoking, maxillary posterior area, immediate dental implant placement and immediate loading protocol, (D4) bone quality, and ≥ 35 Ncm insertion torque.</p><p><strong>Conclusion: </strong>LL dental implants monitored for up to 20 years showed high CSRs and low rates of marginal bone loss.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-31"},"PeriodicalIF":1.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Two-Piece Abutment Concept and Abutment Reconnection/Disconnection on Marginal Bone Level Changes: A Split-Mouth Randomized, Parallel-Designed, 36-Month Follow-Up, Preliminary Clinical Study.","authors":"Berceste Guler Ayyildiz, Busra Terzioglu, Banu Cukurluoz Bayindir","doi":"10.11607/jomi.11454","DOIUrl":"https://doi.org/10.11607/jomi.11454","url":null,"abstract":"<p><strong>Purpose: </strong>The objective of this study was to conduct a comparative evaluation of the clinical and radiographic findings of definitive two-piece abutments placed at secondary surgery following submerged healing and definitive abutments used in standard prosthetic treatments.</p><p><strong>Materials and methods: </strong>The study was designed as a prospective, split-mouth, randomised, parallel-design, blinded clinical trial. The study comprised two groups: a test group and a control group. The test group received a two-piece abutment, while the control group received a standardized healing abutment. The study analyzed a total of 10 patients and 20 implants. Clinical and radiographic measurements were obtained at baseline (T0), 6 months (T1), 12 months (T2) and 36 months follow-up (T3). Radiographic measurements were calculated on standardized periapical radiographs, with the aim of determining marginal bone level changes (ΔMBL) at different time points, emergence angles, and emergence profiles in mesially and distally.</p><p><strong>Results: </strong>A significant difference was found between the groups in mesial, distal, and mean ΔMBL at T0-T1 and distal and mean ΔMBL at T0-T3 values. (p<0.05) Emergence angle values were found to be below 30 degrees both mesially and distally in both groups. (p>0.05) A statistically significant correlation was found between healing/definitive abutment disconnection/reconnection and distal ΔMBL T0-T3. (p<0.05) Conclusion: Within the limitations of the study, although the sample size was limited, with the study design and minimizing confounding factors, it was concluded that two-piece definitive abutment application may have significant effects in terms of reducing ΔMBL changes in both the short and long term. However, further studies with a larger sample size are needed. The study was prospectively registered on the international Clinicaltrials.com registry (NCT05592821).</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-28"},"PeriodicalIF":1.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-Term Outcomes of Dental Implants Following Jaw Resection: A Comparative Analysis of Malignant Tumors and Benign Conditions.","authors":"Taro Mukaibo, Osamu Takahashi, Sho Mitsugi, Yusuke Kondo, Manabu Habu, Chihiro Masaki","doi":"10.11607/jomi.11420","DOIUrl":"https://doi.org/10.11607/jomi.11420","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to evaluate and compare the survival rates of dental implants used for functional rehabilitation following jaw resection due to malignant tumors versus other causes, including benign tumors, osteomyelitis, or trauma.</p><p><strong>Materials and methods: </strong>A retrospective study was conducted on 19 patients who underwent jaw resection and implant placement with bone anchored device for wide edentulous areas at XXX XXX University Hospital between June 2013 and February 2024. Patients were divided into two groups: those with jaw defects due to malignant tumors (T1 group) and those with defects from benign tumors, facial trauma, or osteomyelitis (T2 group). Implant survival was analyzed using Kaplan-Meier curves and log-rank tests, with multivariate analyses via Cox proportional hazards models adjusted for age and various clinical factors.</p><p><strong>Results: </strong>A total of 64 implants were placed, with 48.4% of defects caused by malignant tumors. The 5-year cumulative survival rate was 69.2% at the patient level and 64.5% at the implant level. A significant difference was observed between groups: the T1 group had a 5-year implant survival rate of 34.1% versus 92.3% in the T2 group (p<0.001). The T1 group was significantly older (67.7 ± 9.4 vs. 47.1 ± 15.3 years) and showed a distinct pattern of late failures between 40 and 50 months. Multivariate analyses showed that malignancy remained associated with implant failure across most models, with varying magnitude based on included factors.</p><p><strong>Conclusions: </strong>Implants placed after jaw resection for malignant tumors showed significantly lower survival rates than those placed after resection for benign conditions. This difference persisted across most multivariate models, though the magnitude of association considerably varied depending on the examined factors. These findings provide the first direct comparison of implant outcomes based on resection pathology and highlight the complex factors influencing implant survival in post-oncologic reconstruction.</p>","PeriodicalId":94230,"journal":{"name":"The International journal of oral & maxillofacial implants","volume":"0 0","pages":"1-31"},"PeriodicalIF":1.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}