Biomechanical evaluation of stress distributions at the implant-abutment complex and peri-implant bone around mandibular dental implants with different neck geometries and inclinations
| Autor: | Firat Selvi, Pinar Turkoglu, Murat M Dinc |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Dental Stress Analysis
medicine.medical_treatment Finite Element Analysis 0206 medical engineering Platform switching Mandible 02 engineering and technology Peri implant bone Stress (mechanics) 03 medical and health sciences 0302 clinical medicine Medicine Computer Simulation Dental implant Dental Implants Orthodontics Crestal bone business.industry Mechanical Engineering Dental Implant-Abutment Design 030206 dentistry General Medicine 020601 biomedical engineering Biomechanical Phenomena Dental Prosthesis Design Stress Mechanical business Implant abutment |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 235:1035-1045 |
| ISSN: | 2041-3033 0954-4119 |
| Popis: | This study aimed to investigate the effects of the different dental implant neck designs, diameters, and inclinations, on the stress distributions at the mandibular crestal bone and implant-abutment complex, using three-dimensional (3D) finite element stress analysis (FEA) method. Finite element models of three-unit fixed partial dentures supported with two same length implants (10 mm), placed on the second premolar and second molar regions, were designed. Eight different models were designed according to the implants’ neck designs (platform switching/traditional), diameters (4.1 mm/4.8 mm) and the tilting angles of the posterior implants (0°/15°). The anterior implants’ widths were 4.1 mm and the neck design of the anterior implants matched the posterior implants. Two types of 100-N loads in vertical and 30° oblique directions were applied separately onto each central fossae and functional cusps of the fixed partial dentures crowns. Algor Fempro Software was used for the simulation and evaluation of the stress levels at the implant-abutment complex and the crestal bone. Stress levels measured at the crestal bone were found to be lower for the platform switching models. However, the platform switching design generated higher stress magnitudes within the implant-abutment complex. Inclined placement of posterior implants increased the amount of stress at the crestal bone around both implants. Biomechanically, selection of the largest diameter possible when using tilted platform switched implants may be recommended at the posterior mandible. |
| Databáze: | OpenAIRE |
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