Finite element analysis of stress at implant–bone interface of dental implants with different structures
| Autor: | He Hao, Yi-min Li, Xiao-ping Guo, Rui-fang Wang, Liang-jian Chen, Ting Li |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Materials science
technology industry and agriculture Metals and Alloys Modulus chemistry.chemical_element Geotechnical Engineering and Engineering Geology Condensed Matter Physics Finite element method Stress (mechanics) medicine.anatomical_structure chemistry Materials Chemistry medicine Implant Layer (electronics) Cancellous bone Elastic modulus Biomedical engineering Titanium |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 21:1602-1610 |
| ISSN: | 1003-6326 |
| Popis: | The effect of structure, elastic modulus and thickness of lower modulus layer in porous titanium implants on the stress distribution at the implant–bone interface was investigated. Three-dimensional finite element models of different titanium implants were constructed. The structures of the implants included the whole lower modulus style (No.1), bio-mimetic style (No.2), the whole lower modulus style in cancellous bone (No.3) and the whole dense style No.4. The stress distributions at bone–implant interface under static loading were analyzed using Ansys Workbench 10.0 software. The results indicated that the distribution of interface stress is strongly depended on the structure of the implants. The maximum stresses in cancellous bone and root region of implant No.2 are lower than those in the other three implants. A decrease in the modulus of the low modulus layer facilitates the interface stress transferring. Increasing the thickness of the low modulus layer can reduce the stress and induce a more uniform stress distribution at the interface. Among the four implants, biomimetic style implant No.2 is superior in transferring implant–bone interface stress to surrounding bones. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect