Effects of implant neck design on primary stability and overload in a type IV mandibular bone

Autor:	I-Chiang Chou, Cho-Pei Jiang, Shyh Yuan Lee
Rok vydání:	2014
Předmět:	Materials science Force direction Applied Mathematics Biomedical Engineering Mandible Osseointegration medicine.anatomical_structure Computational Theory and Mathematics Modeling and Simulation Horizontal force medicine von Mises yield criterion Cortical bone Implant Molecular Biology Software Stress concentration Biomedical engineering
Zdroj:	International Journal for Numerical Methods in Biomedical Engineering. 30:1223-1237
ISSN:	2040-7939
DOI:	10.1002/cnm.2653
Popis:	This study investigates the effect of implant neck design on primary stability and overload using 3D finite element analysis. Four commercial dental implants and mandibular segments are created. Various parameters including the osseointegration condition (non-osseointegration and full osseointegration), force direction (vertical and horizontal), and cortical bone thickness (Tc = 0.3, 0.5, and 1 mm) are considered. The vertical and horizontal forces, 500 N and 250 N, are statically applied at the top of the platform, respectively. Micromotion and von Mises stress are employed to evaluate the risk of osseointegration and bone fatigue before osseointegration condition. After osseointegration, the principal stress is used to analyze the bone overload. Maximal von Mises stress and micromotion of the peri-implant bone decreased as cortical bone thickness increased. Horizontal force induces stress concentration in the bone around the implant neck easier than that of vertical force, and it may result in crestal bone loss. Thinner cortical bone should avoid dental implantation because it causes a noteworthy larger micromotion and stress concentration in cortical bone in particular Tc less than 0.3 mm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3a1153c3c0502fb325b7f8e1d6f07452 https://doi.org/10.1002/cnm.2653 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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