Clinical Oral Implants Research最新文献

{"title":"One‐Piece Monolithic Zirconia Single Tooth Implant‐Supported Restorations in the Posterior Region: A 1‐Year Prospective Case Series Study","authors":"Vincent J. J. Donker, Henny J. A. Meijer, Wim Slot, Arjan Vissink, Gerry M. Raghoebar","doi":"10.1111/clr.14396","DOIUrl":"https://doi.org/10.1111/clr.14396","url":null,"abstract":"ObjectiveTo assess the clinical, radiographic and patient‐reported outcome measures, and the success of screw‐retained one‐piece monolithic zirconia implant‐supported restorations in the posterior region during a 1‐year follow‐up.MethodsIn a prospective case series, 50 single molar sites in the posterior region of 41 patients with a minimum age of 18 years and sufficient bone volume for placing an implant (≥ 8 mm) and space for an anatomical restoration were included. Following prosthetic‐driven digital three‐dimensional treatment planning, a tissue‐level implant with an internal connection was inserted during a one‐stage surgical procedure. Three months later, the implant was restored with a screw‐retained one‐piece monolithic zirconia restoration. Clinical, radiographic and patient‐reported outcome measures, and restoration survival and success according to the modified USPHS criteria were assessed at baseline prior to and immediately after implant placement, and 1‐month and 1‐year after definitive restoration placement.ResultsAt the 1‐year follow‐up, 1 implant had been lost (implant survival rate 98%) hence, 49 restorations were evaluated. The restoration survival and success rates were 100% and 98%, respectively. Plaque, calculus, bleeding and suppuration on probing and peri‐implant inflammation were absent in most cases. The mean (<jats:italic>SD</jats:italic>) marginal bone level change between implant placement and the 1‐year follow‐up was −0.14 mm (0.27) on the mesial and −0.25 mm (0.31) on the distal side. The mean (<jats:italic>SD</jats:italic>) patient satisfaction (0–10) was 9.2 (0.8) at the 1‐year evaluation.ConclusionOne‐piece monolithic zirconia implant‐supported restorations exhibited favourable outcomes over 1 year in situ.Trial Registration: Registered in the National Trial Register (NL9059)","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Exomass‐Related Artefacts Caused by Dental Implants of Different Materials in Cone‐Beam Computed Tomography Scans: An Ex Vivo Study","authors":"Matheus L. Oliveira, Dorothea Dagassan‐Berndt, Matheus Sampaio‐Oliveira, Michelle Simonek, Sebastian Kühl, Michael M. Bornstein","doi":"10.1111/clr.14394","DOIUrl":"https://doi.org/10.1111/clr.14394","url":null,"abstract":"ObjectivesTo evaluate the influence of different dental implant materials within the exomass on the image quality in cone‐beam computed tomography (CBCT).Material and MethodsFive pig jaws were scanned using four CBCT devices, first without any dental implants, followed by scans with three dental implants of the same material—pure titanium, titanium‐zirconium alloy, and zirconium dioxide. Two fields of view (FOVs) were used for each device to position the implants in the exomass of a small FOV and within a large FOV. Voxel values were obtained from tubes containing a radiopaque solution to calculate mean voxel value (MVV), voxel value inhomogeneity (VVI), and image noise (IN), which were compared across implant materials and FOVs using repeated measures analysis of variance (<jats:italic>α</jats:italic> = 0.05). Three observers independently scored image quality using a 5‐point scale.ResultsIn general, MVV remained unaffected, except for a significant increase in the X800 device when titanium or titanium‐zirconium alloy implants were in the exomass of a small FOV (<jats:italic>p</jats:italic> ≤ 0.05). A trend of increased VVI was observed when implants were in the exomass of a small FOV, with a greater effect for zirconium dioxide, followed by titanium‐zirconium alloy and titanium. IN was higher when implants were in the exomass, especially for zirconium dioxide implants (<jats:italic>p</jats:italic> ≤ 0.05). Image quality perception was consistent overall, though zirconium dioxide implants in both FOVs resulted in diminished quality.ConclusionsThe presence of implants in the exomass can negatively affect CBCT image quality, with zirconium dioxide having the greatest impact.","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"268 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bone Substitute Material in the Surgical Therapy of Peri-Implantitis-3-Year Outcomes of a Randomized Controlled Trial.","authors":"Lamija Alibegovic, Anna Trullenque-Eriksson, Alberto Ortiz-Vigón, Adrián Guerrero, Mauro Donati, Eriberto Bressan, Karolina Karlsson, Carlotta Dionigi, Erik Regidor, Yuki Ichioka, Cristiano Tomasi, Paolo Ghensi, Dennis Schaller, Ingemar Abrahamsson, Tord Berglundh, Jan Derks","doi":"10.1111/clr.14393","DOIUrl":"https://doi.org/10.1111/clr.14393","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the potential mid-term benefit of the use of a bone substitute material in the reconstructive surgical treatment of peri-implantitis.</p><p><strong>Methods: </strong>A total of 120 subjects (127 implants) affected by peri-implantitis were followed over 3 years in a multicenter randomized clinical trial. Participants had been randomized to either control (access flap surgery) or test group (access flap surgery and bone substitute material). Clinical, radiographic, and patient-reported outcomes were assessed. The primary outcome was a composite measure including probing pocket depth ≤ 5 mm, absence of bleeding and suppuration on probing, soft tissue recession ≤ 1 mm, and implant neither reoperated nor lost. In an additional outcome (disease resolution), we allowed for one bleeding site and did not consider recession.</p><p><strong>Results: </strong>While 14 implants (11%) were lost and a second surgical intervention had been performed at 3 implants (2.4%), pronounced improvements of clinical parameters were noted at remaining implants in both treatment groups at the 3-year follow-up. This was illustrated by a 3.2-3.5 mm reduction in probing pocket depth and a marginal bone level gain of 1.1-1.3 mm. The primary composite outcome, however, was only achieved at 14% of implants. The second composite outcome defining disease resolution was accomplished at 39% of implants. Patient-reported outcomes were generally favorable.</p><p><strong>Conclusion: </strong>At 3 years, the use of a bone substitute material in the surgical therapy of peri-implantitis did not result in a clear benefit over access flap surgery alone.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov identifier: NCT0307706.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142863574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sinus Bone Graft Stability and Implant Survival Following Transalveolar Sinus Floor Elevation in Severely Atrophic Maxilla: A Retrospective Study With 5-8 Years of Follow-Up.","authors":"Yingjie Mao, Yihan Shen, Jie Dai, Tian Lu, Yefeng Wu, Yali Shi, Fuming He","doi":"10.1111/clr.14392","DOIUrl":"https://doi.org/10.1111/clr.14392","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the clinical and radiographic results of transalveolar sinus floor elevation (TSFE) with grafting in cases of severely atrophic maxilla.</p><p><strong>Materials and methods: </strong>A retrospective analysis of clinical and radiographic data was conducted. Between 2015 and 2018, a total of 105 implants were placed in 105 patients over a follow-up period of 5-8 years. Implant failures and endo-sinus bone gain (ESBG) were assessed. Statistical models were established to investigate the potential influencing factors of implant survival and ESBG.</p><p><strong>Results: </strong>Six patients with six implants were lost, resulting in cumulative survival rates of 94% for both patient- and implant-based analyses. The 8-year cumulative survival rate was significantly lower for residual bone height (RBH) < 4 mm (88%) compared to RBH 4-6 mm (98%). ESBG ≥ 4 mm and ESBG ≥ 6 mm were observed in 89.90% and 58.59% of implant sites, respectively. According to the log-rank Mantel-Cox analysis results, none of the factors examined were significantly related to implant failure, except for RBH (p = 0.038) at baseline. The linear mixed-model regression results showed that the final ESBG was positively correlated with implant insertion site (p = 0.003), implant length (p < 0.001), sinus floor elevation (SFE) methods (p = 0.010), and RBH (p < 0.001).</p><p><strong>Conclusions: </strong>Within the limitations of this study, it has been established that TSFE with grafting was a reliable method for implant placement in the posterior atrophic maxilla ridges with RBH ranging from 4 to 6 mm. Nevertheless, caution was advised when considering its application in cases where the initial bone height falls below 4 mm.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142853288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Implant Component Materials on Peri-Implant Soft Tissue Healing: A Comparative Histological and Immunohistochemical Study in Humans.","authors":"Lemmy Liegeois, Manon Borie, Geoffrey Lecloux, Dorien Van Hede, France Lambert","doi":"10.1111/clr.14391","DOIUrl":"https://doi.org/10.1111/clr.14391","url":null,"abstract":"<p><strong>Background: </strong>Recently, the importance of peri-implant soft tissue integration quality has been recognised as an essential factor in the long-term success of dental implant rehabilitation.</p><p><strong>Aim: </strong>The aim of this study was to explore the influence of three materials commonly used in implant dentistry, namely titanium (Ti), dental adhesive resin (Re) and polyetheretherketone (PEEK), on the peri-implant soft tissues.</p><p><strong>Methods: </strong>In this clinical randomised comparative study, 37 bone-level implants were placed, and experimental transmucosal healing abutments made of different materials were randomly assigned to each implant. These abutments were removed together with the surrounding soft tissues after 8 weeks. Immunohistochemical analyses were performed to determine the presence and localisation of different immune cells. In addition, clinical and radiographic data were collected and peri-implant bone remodeling was assessed.</p><p><strong>Results: </strong>Compared to the Ti and PEEK groups, Re abutments revealed a higher infiltration of macrophages in the connective tissue (p = 0.04) and neutrophils in the adjacent epithelium (p = 0.03). In the Re abutments, peri-implant bone remodeling was higher compared to the other groups (p = 0.01).</p><p><strong>Conclusion: </strong>The use of resin material as a transmucosal healing abutment should be carefully considered as it was associated with a higher presence of inflammatory cells at 8 weeks post-implantation as well as superior bone remodeling compared to PEEK and Ti.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142827570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Primary Stability of Dental Implants in Human Jawbones: Experiments & FE Analyses.","authors":"Patrik Wili, Cedric Rauber, Amal Saade, Salomé Bliggenstorfer, Valentina Ramirez-Garmendia, Ramon Schweizer, Ainara Irastorza-Landa, Vivianne Chappuis, Philippe Zysset","doi":"10.1111/clr.14386","DOIUrl":"https://doi.org/10.1111/clr.14386","url":null,"abstract":"<p><strong>Objectives: </strong>Primary stability (PS) is a key factor for promoting osseointegration and long-term success of dental implants particularly for immediate loading protocols. Beyond the current assessments of PS, an accurate pre-operative evaluation of PS would contribute to the improvement of surgical planning and treatment outcome. This study used biomechanical testing and homogenized finite element (hFE) analysis to objectively measure PS in the laboratory, and digitally estimate PS from prior μCT reconstructions.</p><p><strong>Material and methods: </strong>Thirty-five bone samples extracted from the jaws of two donors were examined. Twenty-two were finally evaluated for PS. After scanning of the samples with μCT, implants were inserted by two experienced surgeons, and various metrics such as μCT-based bone volume fraction (BV/TV), insertion torque (IT), and resonance frequency analysis (RFA) were assessed to determine PS. Mechanical tests were conducted to measure ultimate force (UFexp) as an objective indicator of PS while the hFE simulations were performed to estimate this same ultimate force (UFsim).</p><p><strong>Results: </strong>Higher correlation was found between UFsim and UFexp (R² = 0.85) than between BV/TV and UFexp (R² = 0.61), IT and UFexp (R² = 0.50), and RFA and UFexp (R² = 0.38). All variables demonstrated a statistically significant linear correlation with UFexp (p < 0.01).</p><p><strong>Conclusion: </strong>UFsim turns out to be a more reliable and objective indicator of PS than IT and RFA. The hFE analysis requires prior μCT reconstructions and is currently limited by numerical convergence problems. Despite these limitations, pre-operative hFE analysis emerges as a promising tool with a higher accuracy for estimation of PS than state of care techniques.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of the Implant Disease Risk Assessment in Predicting Peri‐Implantitis: A Retrospective Study","authors":"Nathalia Vilela, Bruno C. V. Gurgel, Christina M. Rostant, Karin C. Schey, Krishna Mukesh Vekariya, Hélio D. P. da Silva, Claudio M. Pannuti, Poliana M. Duarte","doi":"10.1111/clr.14390","DOIUrl":"https://doi.org/10.1111/clr.14390","url":null,"abstract":"ObjectiveThis university‐based retrospective study aimed to assess the performance of the implant disease risk assessment (IDRA) in predicting peri‐implantitis.Material and MethodsPatients with implants loaded for at least 1 year were included. Peri‐implantitis development was the outcome, while the IDRA score and its eight vectors were the predictors. The IDRA score was calculated using an online tool. Data were analyzed using Cox proportional hazards models and ROC curve (AUC).ResultsAmong 480 implants in 235 patients, 7.9% of implants and 9.4% of patients developed peri‐implantitis. Implants at high risk for the “number of sites with PD ≥ 5 mm” vector had an increased risk (HR = 9.8, <jats:italic>p</jats:italic> = 0.004) of peri‐implantitis, compared to those at low risk for this parameter. Implants at moderate (HR = 4.8, <jats:italic>p</jats:italic> = 0.04) and high (HR = 10.0, <jats:italic>p</jats:italic> = 0.01) risk for the “distance from the restorative margin (RM) to bone crest (BC)” vector exhibited a higher risk of peri‐implantitis than implants at low risk for this parameter. The IDRA tool demonstrated an AUC of 0.66 (sensitivity = 0.80; specificity = 0.24) when estimated at implant level and an AUC of 0.61 (sensitivity = 0.91; specificity = 0.32) when calculated at patient level. The mixed‐effects Cox model did not reveal a significant association between the overall IDRA score and the development of peri‐implantitis (HR = 7.2, <jats:italic>p</jats:italic> = 0.18).ConclusionIDRA demonstrates good sensitivity but low specificity and suboptimal discriminatory capacity in predicting peri‐implantitis. The “number of sites with PD ≥ 5 mm” and “distance from RM to BC” emerged as the most effective predictors for peri‐implantitis.","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"19 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Use of the Facial Sinus Wall as Bone Shell Onlay Graft for Maxillary Posterior Ridge Reconstruction: A Retrospective Case Series.","authors":"Stefan Krennmair, Michael Weinländer, Michael Malek, Thomas Forstner, Michael Stimmelmayr, Gerald Krennmair","doi":"10.1111/clr.14387","DOIUrl":"https://doi.org/10.1111/clr.14387","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the performance and clinical outcome of vertical and horizontal bone augmentation (VHBA) in posterior maxillary regions combining lateral window sinus floor elevation (LWSFE) with a horizontal bone shell technique applying the maxillary facial sinus wall as a bone plate.</p><p><strong>Materials and methods: </strong>In 18 patients, LWSFE was combined with a horizontal bone shield augmentation procedure utilizing the maxillary facial sinus bone wall as a lateral bone plate. Both the sinus cavity and the lateral bone box created were grafted with a mixture of autogenous bone/venous blood and bovine bone mineral. The primary aim was to assess the performance of combined techniques enabling subsequent implant placement. Using radiographic measurements (preoperative, after VHBA, at implant placement, and at follow-up), bone gain/reduction of augmented horizontal ridge width (HRW) and vertical bone height (VBH) were evaluated. Additionally, clinical outcome assessing implant survival/success rate, marginal bone loss (MBL), and implant health (mucositis/peri-implantitis) was evaluated.</p><p><strong>Results: </strong>For the combined VHBA techniques, HRW and VBH increased significantly (p < 0.001) from preoperative 3.5 ± 1.4 mm/3.6 ± 2.1 mm to 9.7 ± 1.9 mm/18.0 ± 1.6 mm post-augmentation. However, HRW and VBH dimensions decreased up to 8.9 ± 1.8 mm/17.1 ± 1.4 mm at implant placement and 8.6 ± 1.7 mm/16.7 ± 1.3 mm at follow-up evaluation (3.8 ± 1.8 years; p < 0.001, respectively). Augmented bone reduction was significantly higher (-7.7%) between the augmentation procedure and implant placement than in the post-implant-placement period (-2.5%). All implants survived (100%) representing peri-implant MBL of -0.9 ± 0.7 mm, pocket depth of 3.4 + 1.8 mm, and prevalences of 5%/0% for peri-implant mucositis/peri-implantitis.</p><p><strong>Conclusion: </strong>The combination of horizontal bone augmentation using local bone shield transfer from the maxillary facial sinus wall with LWSFE enables sufficient reconstruction of maxillary posterior ridge.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142794001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of CAD/CAM Abutment Morphology on the Outcomes of Implant Therapy: A Randomized Controlled Trial.","authors":"Christopher A Barwacz, Madeline Swenson, Emilio Couso-Queiruga, Carissa Comnick, Xian Jin Xie, Gustavo Avila-Ortiz","doi":"10.1111/clr.14389","DOIUrl":"https://doi.org/10.1111/clr.14389","url":null,"abstract":"<p><strong>Objectives: </strong>Variations in transmucosal abutment contour design may affect the outcomes of implant therapy. This randomized controlled trial was primarily aimed at testing the effect that CAD/CAM zirconia abutments with either a concave or linear divergent transmucosal morphology have on peri-implant mucosal dynamics and indicators of peri-implant health at 1 year after final implant-supported prosthesis insertion in the anterior maxilla.</p><p><strong>Materials and methods: </strong>Following computer-guided implant placement and osseointegration, eligible subjects were randomized into either the experimental (concave morphology) or the control (linear divergent morphology) group. A comprehensive set of outcomes of interest related to peri-implant soft tissue dynamics, phenotypical features, and indicators of peri-implant health were assessed at different time points over a 1-year period after insertion of the final restoration.</p><p><strong>Results: </strong>Out of 60 initially recruited subjects, a total of 54 completed the study (n = 29 in the experimental group concave/n = 25 in the control group). Overall implant survival and restoration rates between master impression and 12 months were 100% and 98.2%, respectively. Although a trend for coronal migration of the buccal mucosa zenith, gain in mucosal thickness, and increased probing depth and bleeding on probing was observed in both groups, these changes were clinically negligible, and no substantial differences were observed between study groups regardless of variations in transmucosal abutment morphology.</p><p><strong>Conclusion: </strong>The use of either linear divergent or concave custom CAD/CAM zirconia abutments in a screw-retained, delayed loading approach yielded no significant differences.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142784275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implant-Supported Cantilever Fixed Dental Prosthesis in the Anterior Region: Effect of Implant Type and Aging In Vitro.","authors":"Nadja Rohr, Yotaro Iwauchi, Raffael Bernauer, Raphael Heuzeroth, Nicola U Zitzmann","doi":"10.1111/clr.14388","DOIUrl":"https://doi.org/10.1111/clr.14388","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate if the fracture load of implant-supported cantilever fixed dental prostheses (ICFDPs) in the anterior region is affected by the implant type and the aging protocol.</p><p><strong>Materials and methods: </strong>Sixty ICFDPs were prepared using multilayer monolithic zirconia for restoring bone-level (BL) and tissue-level (TL) titanium-zirconium implants. Fracture load was measured at baseline (no aging) or after aging in a chewing simulator loading the implant crown or the cantilever in a 30° angle (n = 10 per group). A two-way ANOVA was applied (α = 0.05) for the effects of implant type and aging protocol.</p><p><strong>Results: </strong>Implant type (p < 0.001) and aging (p < 0.001) had a significant effect on fracture load values. Baseline specimens of both BL (665 ± 62 N) and TL (554 ± 23 N) had significantly higher mean fracture load values than those of aged specimens(BL implant crown 545 ± 46 N, BL cantilever 563 ± 45 N, TL implant crown 455 ± 32 N, TL cantilever 476 ± 24 N) (p < 0.001). The loading position during aging did not affect fracture load values for BL (p = 0.980) nor TL (p = 0.749). BL implants failed by cement fracture and abutment deformation, while for TL the transmucosal part of the implant deformed.</p><p><strong>Conclusions: </strong>The fracture load values of anterior ICFDPs decrease with aging in a chewing simulator. BL implants are preferable over TL implants for anterior ICFDPs as higher fracture load values were achieved, and no implant deformation occurred.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}