Effect of the number of abutments on biomechanics of Branemark prosthesis with straight and tilted distal implants
| Autor: | Tomás Geremia, André Cervieri, Eduardo Rolim Teixeira, Rosemary Sadami Arai Shinkai, Marcos Michelon Naconecy |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Dental Stress Analysis
Tilted implants Materials science Cantilever Compressive Strength Abutment Dental Abutments Statistics Nonparametric Strain gauges Tensile Strength Implant-supported prostheses medicine Humans Biomechanics Pliability Number of abutments General Dentistry Strain gauge Dental Implants Orthodontics Analysis of Variance Dental Implantation Endosseous Dental prosthesis Original Articles Elasticity Models Dental Sagittal plane Biomechanical Phenomena Models Structural lcsh:RK1-715 medicine.anatomical_structure Dental Prosthesis Design lcsh:Dentistry Bending moment Dental Prosthesis Implant-Supported |
| Zdroj: | Journal of Applied Oral Science, Vol 18, Iss 2, Pp 178-185 (2010) Journal of Applied Oral Science, Volume: 18, Issue: 2, Pages: 178-185, Published: APR 2010 Journal of Applied Oral Science ResearcherID Journal of Applied Oral Science v.18 n.2 2010 Journal of applied oral science Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1678-7765 1678-7757 |
| Popis: | OBJECTIVE: This study aimed to evaluate the bending moments, and compressive and tensile forces in implant-supported prostheses with three, four or five abutments. MATERIAL AND METHODS: Ten Pd-Ag frameworks were tested over two master models with: 1) parallel vertical implants, and 2) tilted distal implants. Strain gauges were fixed on the abutments of each master model to measure the deformation when a static load of 50 N was applied on the cantilever (15 mm). The deformation values were measured when the metallic frameworks were tested over three, four or five abutments, and transformed into force and bending moment values. Data were analyzed by ANOVA and Tukey's test for multiple comparisons at 5% level of significance. RESULTS: Abutment #1 (adjacent to the cantilever) had the highest values of force and sagittal bending moment for all tests with three, four or five abutments. Independently from the number of abutments, axial force in abutment #1 was higher in the vertical model than in the tilted model. Total moment was higher with three abutments than with four or five abutments. Independently from the inclination of implants, the mean force with four or five abutments was lower than that with three abutments. CONCLUSION: The results suggest that in the set-ups with four or five abutments tilted distal implants reduced axial force and did not increase bending moments. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|