The International journal of prosthodontics最新文献_第7页

Biomechanical Analysis of One-Piece Postand- Core: High-Performance Polymers vs Conventional Materials. 对不同材料的一体式骨柱和骨芯进行生物力学分析：高性能聚合物是一种选择吗？

The International journal of prosthodontics Pub Date : 2024-06-21 DOI: 10.11607/ijp.8658

Ayben Şentürk, Funda Akaltan, Özge Aydog, Burak Yilmaz

{"title":"Biomechanical Analysis of One-Piece Postand- Core: High-Performance Polymers vs Conventional Materials.","authors":"Ayben Şentürk, Funda Akaltan, Özge Aydog, Burak Yilmaz","doi":"10.11607/ijp.8658","DOIUrl":"10.11607/ijp.8658","url":null,"abstract":"Purpose: To evaluate the stress distribution along a premolar's root dentin, its post, and its post-luting agent when materials with different elastic moduli are used to fabricate one-piece post-and-cores in two different designs.Materials and methods: Two 3D virtual models (for cylindrical and conical post designs) of a mandibular premolar restored with one-piece post-and-core restorations were obtained using a software. A total of eight post-and-core materials were tested: polyetheretherketone (PEEK), polyetherketoneketone (PEKK), glass fiber-reinforced polyetheretherketone (GFR-PEEK), carbon fiber-reinforced polyetheretherketone (CFR-PEEK), gold-palladium alloy (Au-Pd), titanium (Ti), zirconia (Zi), and chromium-nickel (Cr-Ni). Maximum principals stress (MPS) in the post, post-luting agent, and root dentin were determined. A load of 150 N was applied to the buccal cusp in the linguo-labial direction at an angle of 45 degrees oblique to the longitudinal axis of the crown.Results: The highest MPS value in post structure was observed with Cr-Ni material for both post designs. Similarly, the highest MPS value in the post-luting agent was observed for Cr-Ni, the material with the highest elastic modulus. However, in the root dentin, the highest value was observed in PEEK, the material with the lowest elastic modulus.Conclusions: Post material and design influenced the stress concentration in the post, post-luting agent, and root dentin. The stress at the root dentin was slightly higher for polymeric materials. Cylindrical post design revealed lower stresses than conical post design at root dentin for all post-and-core materials tested.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"339-348"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139479279","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}

引用次数: 0

The 2024 International Association for Dental Research (IADR) Awards: A Unique Opportunity for Researchers in Prosthodontics. 2024 年国际牙科研究协会 (IADR) 奖：口腔修复学研究人员的独特机遇。

The International journal of prosthodontics Pub Date : 2024-06-21 DOI: 10.11607/ijp.2024.3.e

Stephen F Rosenstiel

引用次数: 0

Influence of Crown-to-Implant Ratio on Crestal Bone Loss at Implants with Single Crowns and Bridges: A 5- to 20-Year Long-Term Cohort Study in Patients with Periodontal Disease. 冠与种植体比率对单冠和单桥种植体的骨丢失的影响。

The International journal of prosthodontics Pub Date : 2024-06-21 DOI: 10.11607/ijp.8447

Dano Willms Hausmann, Maik Hahmann, Martin Mogk, Reiner Mengel

{"title":"Influence of Crown-to-Implant Ratio on Crestal Bone Loss at Implants with Single Crowns and Bridges: A 5- to 20-Year Long-Term Cohort Study in Patients with Periodontal Disease.","authors":"Dano Willms Hausmann, Maik Hahmann, Martin Mogk, Reiner Mengel","doi":"10.11607/ijp.8447","DOIUrl":"10.11607/ijp.8447","url":null,"abstract":"Purpose: To evaluate how the crown-to-implant (C/I) ratio affects the loss of crestal bone at single-crown implants and bridges in patients with periodontal disease.Materials and methods: A total of 39 patients treated for periodontitis were rehabilitated with 108 implant-supported single crowns and bridges. Each patient was examined over a 5- to 20-year period on a 3- to 6-month recall schedule. At each session, we recorded periodontal clinical parameters. In addition, intraoral radiographs were taken after superstructure insertion (baseline) and then at 1, 3, 5, 10, 15, and 20 years. The study population was divided by anatomical C/I ratio (Group 1: C/I ≤ 1, Group 2: C/I > 1).Results: Implants had a 96.2% 5-year survival rate and 92.6% 20-year survival rate. The overall prevalence was 10.1% for mucositis and 1.1% for peri-implantitis. The survival rate (P = .68), incidence of mucositis (P = .325), and incidence of peri-implantitis (P = .077) did not significantly differ in the group comparison. The mean annual peri-implant bone loss was 0.09 ± 0.41 mm and was not significantly different between the groups. Mean bone loss was not significantly different until the 10th year of observation, during which Group 2 presented significantly less bone loss. The correlation of annual bone loss and clinical C/I ratio showed a small but significant negative effect throughout the entire study period (R = -0.217; P < .01).Conclusions: Increased crestal bone loss was not observed with implants with higher C/I ratios, both anatomical and clinical, and they even showed signs of less crestal bone loss.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"245-252"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41159293","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}

引用次数: 0

TESTING OF ZIRCONIA FPD FRAMEWORKS FOR FIXED PROSTHESES: MODEL DESIGN AND EVALUATION OF FRACTURE LOAD. 用于固定义齿的氧化锆 FPD 框架测试：模型设计与断裂载荷评估。

The International journal of prosthodontics Pub Date : 2024-06-21 DOI: 10.11607/ijp.7179

Rüdiger Junker, Robert Falck, Maximilian Fischl, Gergo Mitov, Dieter Pils, Constantin von See

引用次数: 0

Impact of Removable Partial Dentures on Masticatory Performance in Partial Edentulism: A Systematic Review. 可摘局部义齿对部分性失足患者咀嚼性能的影响：一项系统综述。

The International journal of prosthodontics Pub Date : 2024-06-21 DOI: 10.11607/ijp.8278

Navodika Yaparathna, Ruvini Manjula Hettiarachchi, Santosh Kumar Tadakamadla, Robert Love, Nigel D Robb, Menaka Abuzar

{"title":"Impact of Removable Partial Dentures on Masticatory Performance in Partial Edentulism: A Systematic Review.","authors":"Navodika Yaparathna, Ruvini Manjula Hettiarachchi, Santosh Kumar Tadakamadla, Robert Love, Nigel D Robb, Menaka Abuzar","doi":"10.11607/ijp.8278","DOIUrl":"10.11607/ijp.8278","url":null,"abstract":"Purpose: To evaluate the impact of removable partial dentures (RPDs) on masticatory performance (MP) of partially edentulous subjects.Materials and methods: Electronic database and hand searches were conducted to explore clinical trials reporting the evidence of the effect of metal- and acrylic-based RPDs on mastication. The validated objective and subjective measures of assessment of mastication were included. The article selection, data extraction, and assessment of risk of bias were conducted by two reviewers independently.Results: Out of 11,200 studies, 1 randomized controlled trial and 23 clinical trials met the inclusion criteria. Positive impact on different parameters of masticatory function after RPD treatment was reported in 14 studies. Subjective evaluation of chewing ability (CA) displayed an improvement in 83.3% of studies, while improvement was evidenced only in 69.5% of studies upon objective evaluation. Most studies reported data on free-end saddles. Of the 13 studies associated with bilateral free-end saddle dentures, 9 studies showed a positive effect on masticatory efficiency. Various factors were found to have an impact on the MP of RPDs.Conclusions: Subjective evaluation displays higher positive impact of RPDs in MP than objective evaluation. Assessment of patients' perspectives is important in clinical decision-making. Multiple factors affect the MP with RPD treatment.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"327-338"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41171703","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}

引用次数: 0

The Journey of Additive Manufacturing in Prosthodontics from the Early Dawn till the Current State of Art. A Narrative Review. 快速成型技术在口腔修复学中的应用从曙光初现到技术现状。叙事回顾。

The International journal of prosthodontics Pub Date : 2024-06-07 DOI: 10.11607/ijp.8998

Ahmed Hytham, Reham B Osman

引用次数: 0

Influence of Different Build Directions on the Fracture Load and Surface Roughness of Additively Manufactured Three-unit Provisional Restoration and Comparison with Conventional Methods of Provisional Fabrication. 不同构建方向对添加式制造三单元临时修复体的断裂载荷和表面粗糙度的影响以及与传统临时制造方法的比较

The International journal of prosthodontics Pub Date : 2024-06-07 DOI: 10.11607/ijp.8813

Shubhi Sahni, Pragati Kaurani, Shweta Bhambhu, Anuja Yadav

{"title":"Influence of Different Build Directions on the Fracture Load and Surface Roughness of Additively Manufactured Three-unit Provisional Restoration and Comparison with Conventional Methods of Provisional Fabrication.","authors":"Shubhi Sahni, Pragati Kaurani, Shweta Bhambhu, Anuja Yadav","doi":"10.11607/ijp.8813","DOIUrl":"https://doi.org/10.11607/ijp.8813","url":null,"abstract":"Purpose: To compare the influence of 0, 45 and 90 degrees build direction on fracture load and surface roughness of additively manufactured three-unit fixed provisional restoration, and to compare with provisionals fabricated using conventional materials.Material and methods: Mandibular typodont right second molar and premolar were prepared for missing mandibular first molar to receive three-unit fixed partial denture. Six groups of 10 samples each, 3-unit provisionals were fabricated using additional manufacturing at 0,45 and 90 degrees, heat polymerized polymethyl methacrylate, auto polymerizing resin and bis-acryl composites resins and tested for fracture load and surface roughness. One way ANOVA and Tukey tests were used to analyze the data.Results: For fracture load, lowest mean value was obtained for auto polymerizing bis-acrylic resin (464.9N) and highest value for 0 degree (596 N), while surface roughness values were lowest for heat polymerized polymethyl methacrylate (0.132μm), and the highest for auto polymerizing polymethyl methacrylate (0.836 μm). Significant differences were obtained between three build directions for fracture load and surface roughness (p=0.001); in all pairwise comparisons except between 0 and 90 degrees (p=0.502) for fracture load; and between all three build directions for surface roughness (p=0.01). On comparing with other provisional materials, significant difference (p=0.001) was observed between all groups. Conclusion- Build direction affected the mechanical properties of additively manufactured three-unit provisionals with 0 degree printed provisionals showing highest fracture load and lowest surface roughness. On comparing with other provisional materials, 0 degree showed highest fracture load, with surface roughness similar to heat polymerized provisionals.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-21"},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289067","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}

引用次数: 0

To Preserve or Extract? A Scoping Review and a Prognostic Decision Tool using Multispecialty Indicators. 保存还是提取？使用多专科指标的范围综述和预后决策工具。

The International journal of prosthodontics Pub Date : 2024-06-07 DOI: 10.11607/ijp.9068

Reem Al Shaltoni, Batool Alsulaimani, Sunporn Namano, Reem Alsaleh, Luis Del Castillo, Hiroshi Hirayama, Konstantinos Michalakis

{"title":"To Preserve or Extract? A Scoping Review and a Prognostic Decision Tool using Multispecialty Indicators.","authors":"Reem Al Shaltoni, Batool Alsulaimani, Sunporn Namano, Reem Alsaleh, Luis Del Castillo, Hiroshi Hirayama, Konstantinos Michalakis","doi":"10.11607/ijp.9068","DOIUrl":"https://doi.org/10.11607/ijp.9068","url":null,"abstract":"As implant-supported restorations have become very popular, there is a tendency to extract teeth and replace them with implants. However, the first goal of dentistry should always be the preservation of natural teeth, given the prerequisite that these can be maintained with the application of appropriate treatment modalities. Therefore, individual tooth risk assessment and prognosis are very important in the treatment plan process. Four important factors influencing the dentist's decision on whether to save or extract a compromised tooth have been identified, and an extensive search of the related English language literature has been performed. Additionally, hand-search in related journals was implemented, and classical textbooks were consulted. Identified articles on patient-related, periodontal, endodontic, and restorative factors were thoroughly analyzed, focusing on diagnosis and tooth prognosis. Fifty-two selected references have been carefully selected and reviewed. Available information was used to develop a color-coded prognostic decision chart with four different factors and up to fourteen crucial parameters. All factors and parameters were analyzed in an effort to help the restorative dentist make a prognostic decision. The proposed color-coded prognostic decision chart can be helpful when a treatment plan is made, and predictable restorative care is planned. This comprehensive prognostic decision chart can aid dentists in providing clinical care of high quality and establishing a consensus on available restorative options. It can additionally establish appropriate communication with patients and third-party individuals in the restorative care process, effectively manage risk factors, and provide a framework for quality assessment in restorative treatment.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-38"},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289087","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}

引用次数: 0

Investigation on the Effectiveness of Digital Scanning Combined with Reverse Engineering Technology in Demonstrating Full Crown Tooth Preparation. 数字扫描结合逆向工程技术在演示全冠牙制备中的有效性研究

The International journal of prosthodontics Pub Date : 2024-06-07 DOI: 10.11607/ijp.8968

Chuang Li, Bo Zou, Weini Xin, Xiaomin Zhao

{"title":"Investigation on the Effectiveness of Digital Scanning Combined with Reverse Engineering Technology in Demonstrating Full Crown Tooth Preparation.","authors":"Chuang Li, Bo Zou, Weini Xin, Xiaomin Zhao","doi":"10.11607/ijp.8968","DOIUrl":"https://doi.org/10.11607/ijp.8968","url":null,"abstract":"Objective: To investigate the effect of digital scanning combined with reverse engineering technology in the demonstration of full crown tooth preparation.Methods: Thirty-one students were randomly divided into the two groups. The students in the control group carried out traditional demonstration by the use of eye-measurement methods. The students in the experimental group carried out improved demonstration by the use of digital intraoral scan with 3D measurement data. The students in both groups were provided with two resin teeth to conduct full crown tooth preparation on head model dental simulators. The teeth prepared before and after demonstration were scored by Chinese Stomatological Association Group Standards, with a total score of 100 points. Analysis of covariance was performed to comparatively analyze the scores related to the tooth surfaces, and convergence angle between two groups.Results: Analysis of two prepared teeth (tooth #11 and #16) in two groups showed that there was a statistical significant difference in the mean score between the control group and experimental group (tooth #11, P = 0.0039) (tooth #16, P = 0.0120).The demonstration of the tooth #16 showed that there were statistical significant differences in the scores related to buccolingual surface (P = 0.0205) and proximal surface (P = 0.0023) between the control group and experimental group; There was a statistical significant difference in the score related to the convergence angle of buccolingual surface between the control group and experimental group (P = 0.0265).Conclusion: The digital methods can effectively improve the quality of tooth preparations and has a pedagogical advantage for posterior teeth, which present greater operational challenges.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-22"},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289068","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}

引用次数: 0

Complete Denture Preclinical Training Program and Digital Tools: A Pilot Study. 全口义齿临床前培训计划和数字化工具：试点研究。

The International journal of prosthodontics Pub Date : 2024-05-17 DOI: 10.11607/ijp.9022

Yohann Flottes, Audrey Porcherot, Marie-Violaine Berteretche, Hélène Citterio, Olivier Fromentin, Christophe Rignon-Bret, Adeline Braud, Claudine Wulfman

{"title":"Complete Denture Preclinical Training Program and Digital Tools: A Pilot Study.","authors":"Yohann Flottes, Audrey Porcherot, Marie-Violaine Berteretche, Hélène Citterio, Olivier Fromentin, Christophe Rignon-Bret, Adeline Braud, Claudine Wulfman","doi":"10.11607/ijp.9022","DOIUrl":"10.11607/ijp.9022","url":null,"abstract":"Purpose: To determine whether digital training improves conceptual skills acquisition for custom tray fabrication and tooth arrangement in the preclinical curriculum for complete denture fabrication.Materials and methods: A crossover design study compared third-year student grades after conventional (manual) and digital training. Half the students were trained with conventional techniques prior to digital, while the other half were trained with digital techniques prior to conventional. The first part of the study (DP1) focused on custom tray fabrication and involved 154 students. The second part (DP2) focused on tooth arrangement with 204 students. The effect of preliminary digital training on conceptual skills was assessed by comparing the results of the students using a Student's t-test. Results were also analyzed by ranking on the students' Perceptual Ability Test (PAT) score. Finally, students' satisfaction with the training was investigated.Results: Students who completed the initial digital session achieved better custom tray fabrication and tooth arrangement in the subsequent manual sessions. For manual laboratory work, the most dexterous students (PAT1 group) demonstrated the best performance. However, PAT2 students had the best performance during the digital sessions during DP1, and PAT1 and PAT2 students had the best performance during the digital sessions during DP2. Additionally, 40% of DP1 and 12% of DP2 students expressed satisfaction with digital sessions.Conclusion: With complementary manual and digital teaching, digital tools may be useful for enhanced student learning. Digital training has contributed to improve results in manual sessions but did not affect student satisfaction and remained a limited tool to detect learning difficulties.","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-20"},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140960998","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}

引用次数: 0