Full text
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| Author(s): |
Mariana Camilo Negreiros Lyrio
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Piracicaba, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba |
| Defense date: | 2009-06-03 |
| Examining board members: |
Marcio de Moraes;
Marisa Aparecida Cabrini Gabrielli;
Simonides Consani
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| Advisor: | Luciana Asprino; Marcio de Moraes |
| Abstract | |
The aim of this study was evaluate the mechanical and photoelastic behavior of two methods of rigid internal fixation (RIF): conventional plates and locking plates. For mechanical tests polyurethane synthetic hemimandible with seccional sagittal ramus split was used, simulating an advancement of 5 mm. The fixation performed on the Group I was a 2.0 mm conventional plates with monocortical screws and fixation used on group II was a 2.0 locking plates with monocortical locking screws. Anova and Tukey tests were applied (P<5) and no statistical differences were noted between the groups. Hemimandibles were made in photoelastic resin with same groups used in mechanical tests and submitted to photoelastical analysis. In relation to tension distribution in photoelastic analysis, the fringes were concentrated around screws, mainly in areas near the osteotomy for both groups. Based in this fact, the conventional and locking fixations systems did not present statistical differences on resistence, and the major forces was concentrated in regions near the osteotomies lines, that considered fragility before sagittal split osteotomy. (AU) | |
| FAPESP's process: | 08/02075-0 - Biomechanical and Photoelastic analysis of internal rigid fixation on sagittal osteotomy for mandibular advancement with conventional and locking screw/plate system |
| Grantee: | Mariana Camilo Negreiros Lyrio |
| Support Opportunities: | Scholarships in Brazil - Master |