Numerical simulation of the effect of time-to-loading on peri-implant bone.
OBJECTIVE
To evaluate the effect of time-to-loading on trabecular bone around single-tooth dental implants using numerical solutions based on computer models.


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 2h, 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.


CONCLUSIONS
Reduced bone contact may not have a prevailing effect over bone quality and quantity on stress generation at the peri-implant bone.


CONCLUSIONS
Time-to-loading of single-tooth implants may not differ in terms of load distributions in neighboring peri-implant bone.
Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, 06100 Sihhiye, Ankara, Turkey. akcak@hacettepe.edu.tr
Kivanç
K
Akça
Atilim
A
Eser
Senay
S
Canay
D001696:Biomechanical Phenomena; D001698:Biomedical Engineering; D001842:Bone and Bones / Q000502:physiology*; D019245:Compressive Strength; D003198:Computer Simulation; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D055119:Elastic Modulus; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D008962:Models, Theoretical; D013314:Stress, Mechanical
D015921:Dental Implants