TY  - JOUR
T1  - The Effect of Thread Shape and Dimensions on Stress Distribution in Dental
Implant and Marginal Bone under Static Load: A Finite Element Analysis
AU - Abangah, Sahar AU - Tavaf, Nader AU - Mallakzadeh, Mohammadreza 
JO  - Journal of Engineering and Applied Sciences
VL  - 11
IS  - 4
SP  - 747
EP  - 750
PY  - 2016
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2016.747.750
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2016.747.750
KW  - Dental implants
KW  -implant thread
KW  -static loading
KW  -von Mises equivalent stress
KW  -modeling
AB  - Reliability and stability of implant-bone collision are of great importance in evaluations of dental implant life time. Implant thread is a fundamental factor in force and stress transmission from implant to bone. In this study, by applying static load, effects of thread shape and dimensions on stress distribution in the implant and the marginal bone are analyzed. A three-dimensional finite element analysis has been performed via simulations in ABAQUS commercial software. Changing the values of height, thread pitch and surface angle in trapezoidal and triangular thread types, the maximum stress values are compared. Furthermore while accounting for the osseointegration phenomenon, a thread with shape and dimensions optimized for implant-a length of 13 mm and diameter of 3.9 mm is suggested. After modeling and stress simulation, it is concluded that compared to triangular threads, a trapezoidal thread with a height of 0.4 mm and pitch of 0.8 mm creates a better stress distribution both in the implant and in the marginal bone.
ER  -