Numerical simulation of the effect of time-to-loading on peri-implant bone

被引:7
|
作者
Akca, Kivanc [1 ]
Eer, Atilim [2 ]
Canay, Senay [1 ]
机构
[1] Hacettepe Univ, Fac Dent, Dept Prosthodont, TR-06100 Ankara, Turkey
[2] Middle E Tech Univ, Dept Mech Engn, Fac Engn, TR-06531 Ankara, Turkey
关键词
Biomechanics; Immediate loading; Early loading; Conventional loading; Finite element analyses; SINGLE-TOOTH IMPLANTS; TRABECULAR BONE; FORMATION ADJACENT; DENTAL IMPLANTS; STRESS-ANALYSIS; FINITE-ELEMENT; MODELS; DOG;
D O I
10.1016/j.medengphy.2009.10.001
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Purpose: To evaluate the effect of time-to-loading on trabecular bone around single-tooth dental implants using numerical solutions based on computer models. Materials and methods:A global model with a coarse mesh carrying a Straumann dental implant (043.033S; Institut Straumann, Basel, Switzerland) was created. A region of interest in trabecular bone was defined to study a localized part of the global model with a refined mesh. Time-to-loading submodels to simulate 2 h, 4 days. 1, 4, 6 and 12 wks of trabecular bone-healing status were designed and created. Bone types were considered in the simulation by different elastic bone properties. A 100-N oblique static load was applied. Maximum and minimum principal stresses were calculated and visualized. Results: Bone types with higher elastic moduli experienced higher stress levels. Changes in the quality and quantity of bone at the bone-implant interface did not affect the overall stress distribution. Peri-implant bone with a higher elastic modulus preserved the stress increase at the implant-bone interface. Discussion: Reduced bone contact may not have a prevailing effect over bone quality and quantity on stress generation at the peri-implant bone. Conclusion: Time-to-loading of single-tooth implants may not differ in terms of load distributions in neighboring peri-implant bone. (C) 2009 IPEM. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:7 / 13
页数:7
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