Experimental evaluation of stress distribution with narrow diameter implants: A finite element analysis
| Autor: | Sezgi Cinel, Ersan Çelik, Elcin Sagirkaya, Onur Sahin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Dental Stress Analysis
Materials science Bone-Implant Interface Finite Element Analysis 0206 medical engineering 02 engineering and technology Stress (mechanics) 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine stomatognathic system Mandibular second premolar Premolar medicine Humans von Mises yield criterion Computer Simulation Composite material Dental Implants Titanium Dental prosthesis 030206 dentistry 020601 biomedical engineering Fatigue limit medicine.anatomical_structure Dental Prosthesis Design Dental Prosthesis Implant-Supported Zirconium Implant Oral Surgery Biomedical engineering |
| Zdroj: | The Journal of Prosthetic Dentistry. 119:417-425 |
| ISSN: | 0022-3913 |
| Popis: | Statement of problem Narrow diameter implants were developed to allow placement in narrow alveolar ridges. Clinicians may have concerns about the durability and function of such implants. Purpose The purpose of this finite element study was to compare the stress values occurring on the implant and at the implant bone interface after the application of the static and dynamic forces on narrow diameter, titanium and titanium-zirconia implants in the maxillary and mandibular second premolar region. Material and methods Titanium (Ti) and titanium-zirconium (Ti-Zr) narrow diameter implants (3.3 mm in diameter, 10 mm in length) were simulated in the maxillary and mandibular second premolar region, and metal-ceramic crown restorations were designed. Forces of 100 N were applied to crowns in a vertical and oblique (45-degree angle to the long axis) direction. Maximum and minimum principal stresses in the cortical and trabecular bone and the von Mises stresses and fatigue strength of the implants were evaluated with 3-dimensional finite element analysis. Results In vertical and oblique static loading, Ti and Ti-Zr implants showed similar stress distribution within the same jaw models. However, the von Mises stresses in Ti-Zr implants were slightly higher than for Ti implants in all models. In oblique static and dynamic loading, all stresses were found higher than vertical loading, and fatigue failure results were found to be more critical than vertical forces. Conclusions Based on a numerical simulation, Ti and Ti-Zr alloys can be used successfully as narrow diameter implants in the second premolar area. |
| Databáze: | OpenAIRE |
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