Evaluation of 'All-on-Four' Concept and Alternative Designs with 3D Finite Element Analysis Method
| Autor: | Dogan, Derya Ozdemir, Polat, Nilufer Tulin, Polat, Serkan, Seker, Emre, Gul, Esma Basak |
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| Přispěvatelé: | [Dogan, Derya Ozdemir] Cumhuriyet Univ, Dept Prosthet Dent, Fac Dent, TR-58140 Sivas, Turkey -- [Polat, Nilufer Tulin -- Gul, Esma Basak] Inonu Univ, Fac Dent, Dept Prosthet Dent, Malatya, Turkey -- [Polat, Serkan] Inonu Univ, Fac Dent, Dept Oral & Maxillofacial Surg, Malatya, Turkey -- [Seker, Emre] Yakindogu Univ, Fac Dent, Dept Prosthet Dent, Mersin, Turkey, Polat, Serkan -- 0000-0002-5814-5451, GUL AYGUN, Esma Basak -- 0000-0002-9475-4035 |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Popis: | WOS: 000341128300004 PubMed ID: 23217013 Purpose: The aim of the present study was to evaluate the effect of the forces on the implant and supporting alveolar ridge in "all on four" concept and alternative designs using finite element analysis. Materials and Methods: Different treatment alternatives with various implant designs were performed in an edentulous mandible. In Design 1, implants were placed according to "All-on-Four" concept; Design 2, two long (13 mm long, 4 mm diameter) and two short (7 mm long, 4 mm diameter) implants; Design 3, four long and two short implants; and Design 4, two long and four short implants were placed vertically. A force of 100 N for each tooth, a total of 300 N load was applied. Finite element analysis was used to evaluate and compare the different designs. Results: The stress concentration within the cortical bone was significantly higher than the trabecular bone around the neck of the implants. The maximum stress values were located around the cortical bone of the distal implant for all designs. The reduction in the number of implants did not diminish the success of the design. Conclusions: In the presence of vertically resorbed posterior mandibula, although the "all on four" concept is a feasible approach clinically, short implants had decreased the amount of force transmitted to the supporting bone. Cumhuriyet University, Scientific Research Projects Commission Presidency Three-dimensional FEA was carried out by Ay Tasarim Ltd. This study was supported by Cumhuriyet University, Scientific Research Projects Commission Presidency. |
| Databáze: | OpenAIRE |
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