Journal of dental biomechanics最新文献_第3页

A technique for in vitro fit assessment of multi-unit screw-retained implant restorations: Application of a triple-scan protocol. 多单元螺钉保留种植体修复体体外配合评估技术:三重扫描方案的应用。

Journal of dental biomechanics Pub Date : 2012-01-01 Epub Date: 2012-07-20 DOI: 10.1177/1758736012452181

Stefan Holst, Matthias Karl, Manfred Wichmann, Ragai E Matta

引用次数: 23

Effect of play between bracket and archwire on anterior tooth movement in sliding mechanics: A three-dimensional finite element study. 滑动力学中托槽与弓丝之间的配合对前牙运动的影响:三维有限元研究。

Journal of dental biomechanics Pub Date : 2012-01-01 Epub Date: 2012-10-17 DOI: 10.1177/1758736012461269

Jun-Ya Tominaga, Pao-Chang Chiang, Hiroya Ozaki, Motohiro Tanaka, Yoshiyuki Koga, Christoph Bourauel, Noriaki Yoshida

{"title":"Effect of play between bracket and archwire on anterior tooth movement in sliding mechanics: A three-dimensional finite element study.","authors":"Jun-Ya Tominaga, Pao-Chang Chiang, Hiroya Ozaki, Motohiro Tanaka, Yoshiyuki Koga, Christoph Bourauel, Noriaki Yoshida","doi":"10.1177/1758736012461269","DOIUrl":"https://doi.org/10.1177/1758736012461269","url":null,"abstract":"Objectives: The aim of this study was to clarify the effect of the play between the bracket and the archwire on anterior tooth movement subjected to the retraction force from various lengths of power arms in sliding mechanics.Materials and methods: A three-dimensional finite element method was used to simulate en masse anterior tooth retraction in sliding mechanics. The displacements of the maxillary incisor and the archwire deformation were calculated when the retraction force was applied.Results: When a play did not exist, bodily movement was obtained at 5.0 mm length of power arm. In case a play existed, bodily movement was observed at the power arm length of 11.0 mm.Conclusions: In the actual clinical situation, a bracket/archwire play and the torsion of the archwire within the bracket slot should be taken into consideration to prescribe an optimal power arm length and to achieve effective anterior tooth movement.","PeriodicalId":88916,"journal":{"name":"Journal of dental biomechanics","volume":"3 ","pages":"1758736012461269"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/1758736012461269","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31018179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Alveolar ridge resorption after tooth extraction: A consequence of a fundamental principle of bone physiology. 拔牙后牙槽嵴吸收:骨生理学基本原理的结果。

Journal of dental biomechanics Pub Date : 2012-01-01 Epub Date: 2012-08-16 DOI: 10.1177/1758736012456543

Stig Hansson, Anders Halldin

引用次数: 150

Effects of mucosal thickness on the stress distribution and denture stability of mandibular implant-supported overdentures with unsplinted attachments in vitro. 粘膜厚度对体外无夹板附着体下颌种植覆盖义齿应力分布及义齿稳定性的影响。

Journal of dental biomechanics Pub Date : 2011-01-01 Epub Date: 2011-05-26 DOI: 10.4061/2011/894395

Asuka Haruta, Yasuyuki Matsushita, Yoshihiro Tsukiyama, Yoshinori Sawae, Nobuo Sakai, Kiyoshi Koyano

{"title":"Effects of mucosal thickness on the stress distribution and denture stability of mandibular implant-supported overdentures with unsplinted attachments in vitro.","authors":"Asuka Haruta, Yasuyuki Matsushita, Yoshihiro Tsukiyama, Yoshinori Sawae, Nobuo Sakai, Kiyoshi Koyano","doi":"10.4061/2011/894395","DOIUrl":"https://doi.org/10.4061/2011/894395","url":null,"abstract":"The aim of this study was to compare the effects of mucosal thickness on the stress pattern around implants and movement of implant-supported overdentures with ball/female and three different types of magnetic attachments. After insertion of two root-form implants into a mandibular model, the surface of the model was covered with a 1.5- or 3-mm layer of impression material to simulate the oral mucosa, and removable overdentures were fabricated on each model. A 50-N vertical force was applied to the right first molar, and the resultant stress distribution and denture movement were measured. In the 1.5-mm mucosal model, the magnetic attachments showed significantly lower bending moments than did the ball attachment. The denture base displacement was the lowest on a magnetic attachment. In this study, use of magnetic attachments could be advantageous for mandibular implant-supported overdentures based on lower stress and better denture stability especially in the thin mucosal model.","PeriodicalId":88916,"journal":{"name":"Journal of dental biomechanics","volume":"2011 ","pages":"894395"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4061/2011/894395","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30041783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Experimentally determined mechanical properties of, and models for, the periodontal ligament: critical review of current literature. 实验确定的机械性能，和模型，牙周韧带:当前文献的关键审查。

Journal of dental biomechanics Pub Date : 2011-01-01 Epub Date: 2011-04-05 DOI: 10.4061/2011/312980

Ted S Fill, Jason P Carey, Roger W Toogood, Paul W Major

{"title":"Experimentally determined mechanical properties of, and models for, the periodontal ligament: critical review of current literature.","authors":"Ted S Fill, Jason P Carey, Roger W Toogood, Paul W Major","doi":"10.4061/2011/312980","DOIUrl":"https://doi.org/10.4061/2011/312980","url":null,"abstract":"Introduction. This review is intended to highlight and discuss discrepancies in the literature of the periodontal ligament's (PDL) mechanical properties and the various experimental approaches used to measure them. Methods. Searches were performed on biomechanical and orthodontic publications (in databases: Compendex, EMBASE, MEDLINE, PubMed, ScienceDirect, and Scopus). Results. The review revealed that significant variations exist, some on the order of six orders of magnitude, in the PDL's elastic constants and mechanical properties. Possible explanations may be attributable to different experimental approaches and assumptions. Conclusions. The discrepancies highlight the need for further research into PDL properties under various clinical and experimental loading conditions. Better understanding of the PDL's biomechanical behavior under physiologic and traumatic loading conditions might enhance the understanding of the PDL's biologic reaction in health and disease. Providing a greater insight into the response of the PDL would be instrumental to orthodontists and engineers for designing more predictable, and therefore more efficacious, orthodontic appliances.","PeriodicalId":88916,"journal":{"name":"Journal of dental biomechanics","volume":"2011 ","pages":"312980"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4061/2011/312980","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"29874507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 107

A comparison of the mechanical properties of the goat temporomandibular joint disc to the mandibular condylar cartilage in unconfined compression. 山羊颞下颌关节盘与下颌髁软骨在无侧限压迫下力学性能的比较。

Journal of dental biomechanics Pub Date : 2011-01-01 Epub Date: 2011-05-29 DOI: 10.4061/2011/212385

Catherine K Hagandora, Thomas W Chase, Alejandro J Almarza

引用次数: 21

A qualitative engineering analysis of occlusion effects on mandibular fracture repair mechanics. 咬合对下颌骨骨折修复力学影响的定性工程分析。

Journal of dental biomechanics Pub Date : 2011-01-01 Epub Date: 2011-09-29 DOI: 10.4061/2011/752741

Thomas R Katona

引用次数: 0

Maxillofacial materials reinforced with various concentrations of polyhedral silsesquioxanes. 用不同浓度的多面体硅氧烷增强的颌面材料。

Journal of dental biomechanics Pub Date : 2010-07-20 DOI: 10.4061/2010/701845

Sharif A Mohammad, Alvin G Wee, Deborah J Rumsey, Scott R Schricker

引用次数: 20

Review of maxillary expansion appliance activation methods: engineering and clinical perspectives. 上颌扩张器激活方法综述:工程与临床观点。

Journal of dental biomechanics Pub Date : 2010-06-28 DOI: 10.4061/2010/496906

D L Romanyk, M O Lagravere, R W Toogood, P W Major, J P Carey

引用次数: 22

Orthodontic Bracket Manufacturing Tolerances and Dimensional Differences between Select Self-Ligating Brackets. 正畸托架制造公差及选用自结扎托架的尺寸差异。

Journal of dental biomechanics Pub Date : 2010-06-27 DOI: 10.4061/2010/781321

Thomas W Major, Jason P Carey, David S Nobes, Paul W Major

{"title":"Orthodontic Bracket Manufacturing Tolerances and Dimensional Differences between Select Self-Ligating Brackets.","authors":"Thomas W Major, Jason P Carey, David S Nobes, Paul W Major","doi":"10.4061/2010/781321","DOIUrl":"https://doi.org/10.4061/2010/781321","url":null,"abstract":"In all manufacturing processes there are tolerances; however, orthodontic bracket manufacturers seldom state the slot dimensional tolerances. This experiment develops a novel method of analyzing slot profile dimensions using photographs of the slot. Five points are selected along each wall, and lines are fitted to define a trapezoidal slot shape. This investigation measures slot height at the slot's top and bottom, angles between walls, slot taper, and the linearity of each wall. Slot dimensions for 30 upper right central incisor self-ligating stainless steel brackets from three manufacturers were evaluated. Speed brackets have a slot height 2% smaller than the nominal 0.559 mm size and have a slightly convergent taper. In-Ovation brackets have a divergent taper at an average angle of 1.47 degrees. In-Ovation is closest to the nominal value of slot height at the slot base and has the smallest manufacturing tolerances. Damon Q brackets are the most rectangular in shape, with nearly 90-degree corners between the slot bottom and walls. Damon slot height is on average 3% oversized.","PeriodicalId":88916,"journal":{"name":"Journal of dental biomechanics","volume":"2010 ","pages":"781321"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2958443/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"29380206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 34