Metallography, oxygenand nitrogen composition and vickers hardness test of internal fixation materials used in the craniofacial skeleton

Author(s)

Marcelo Breno Meneses Mendes

• Document type: Master's Dissertation
• Press: Piracicaba, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba
• Defense date: 2012-10-26

Examining board members

Roger William Fernandes Moreira; Marcelo Marota Araúo; Francisco Wagner Vasconcelos Freire Filho

• Advisor: Roger William Fernandes Moreira

Abstract

This study aims to analyze 04 brands of internal fixation material, used in oral and maxillofacial surgery (Leibinger = group I; Tóride = group II; Engimplan = group III; Medartis = group IV) by metallography, analyzing the composition of gaseous oxygen (O) and nitrogen (N), and Vickers hardness testing. Initially,three specimens with three rings of the plate and three specimens with screws were made for each group. The preparation of the specimens was performed to metallographic analysis, attending the ASTM E3-95 standards. And then the samples were submitted to Vickers hardness test, according to the ASTM E92 standards. Thereafter, the composition analysis of the contents of O and N in all groups was performed with a ring of the plate and a screw for each group. Data were submitted to ANOVA and Tukey's test for result comparison. All steps of the process were recorded and photographed. According to the results, the screws had higher hardness, compared to the plates. Including, the plates of group IV showed the largest grain size. The analysis of the gas composition showed that all groups followed ASTM standards (AU)

• FAPESP's process: 10/06777-9 - ANALYSIS OF THE MATERIALS USED IN INTERNAL FIXATION OF CRANIOFACIAL SKELETON THROUGH METALLOGRAPHY, ANALYSIS OF OXYGEN AND NITROGEN AND VICKERS HARDNESS TEST
• Grantee: Marcelo Breno Meneses Mendes
• Support Opportunities: Scholarships in Brazil - Master