{"title":"Effects of a modified margin design, material, and loading type on the stress distribution of endocrowns: A 3D finite element analysis.","authors":"Kerem Yilmaz, Hakan Aydin, Erdem Özdemir","doi":"10.4012/dmj.2024-316","DOIUrl":null,"url":null,"abstract":"<p><p>In this innovative study, the ferrule design for endocrowns was compared with a new preparation design with tetra-corner retention grooves at each corner of the access cavity, and the 3D finite element method was used for analysis. Resin nanoceramic (RNC), lithium disilicate glass-ceramic (LDS), polyetheretherketone (PEEK), and polymer-infiltrated ceramic network (PICN) materials were investigated. The new design significantly reduced the stress for LDS and PICN in axial and oblique loadings. On remaining tooth tissues, the tetra-corner retention groove design increased the stress peak for RNC and PEEK compared to the ferrule, while it decreased the stress for LDS and PICN under both forces. It was concluded that the new, modified preparation design could be used as an alternative design to the ferrule.</p>","PeriodicalId":11065,"journal":{"name":"Dental materials journal","volume":" ","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dental materials journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.4012/dmj.2024-316","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
Abstract
In this innovative study, the ferrule design for endocrowns was compared with a new preparation design with tetra-corner retention grooves at each corner of the access cavity, and the 3D finite element method was used for analysis. Resin nanoceramic (RNC), lithium disilicate glass-ceramic (LDS), polyetheretherketone (PEEK), and polymer-infiltrated ceramic network (PICN) materials were investigated. The new design significantly reduced the stress for LDS and PICN in axial and oblique loadings. On remaining tooth tissues, the tetra-corner retention groove design increased the stress peak for RNC and PEEK compared to the ferrule, while it decreased the stress for LDS and PICN under both forces. It was concluded that the new, modified preparation design could be used as an alternative design to the ferrule.
期刊介绍：
Dental Materials Journal is a peer review journal published by the Japanese Society for Dental Materials and Devises aiming to introduce the progress of the basic and applied sciences in dental materials and biomaterials. The dental materials-related clinical science and instrumental technologies are also within the scope of this journal. The materials dealt include synthetic polymers, ceramics, metals and tissue-derived biomaterials. Forefront dental materials and biomaterials used in developing filed, such as tissue engineering, bioengineering and artificial intelligence, are positively considered for the review as well. Recent acceptance rate of the submitted manuscript in the journal is around 30%.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
