Shear Bond Strength of Orthodontic Brackets after Accelerated Artificial Aging

Autor:	Ana Beatriz, Silva Sousa, Brahim Drubi-Filho, Panzeri Pires-de-Souza, Michelle Alexandra Chinelatti, Fernanda de Carvalho
Rok vydání:	2013
Předmět:	Materials science business.industry Light activated Bracket TRATAMENTO DE SUPERFÍCIES Dentistry Transbond Plus Self-Etching Primer General Medicine Artificial aging Shear bond Orthodontic brackets Adhesive remnant index business Dental gel
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
ISSN:	2311-8695
DOI:	10.12974/2311-8695.2013.01.01.5
Popis:	The purpose of this study was to compare the shear bond strength (SBS) and the adhesive remnant index (ARI) after Accelerated Artificial Aging (AAA) of metal orthodontic brackets bonded with self-polymerizing (Concise Ortodôntico - CS, 3M Unitek) and light activated (Transbond Plus Color Change - TPCC, 3M Unitek) composites to enamel after different surface treatments. Methodology: 60 human premolars were separated into 5 groups (n=12): Group I - 37% phosphoric acid (PA Dental Gel, Dentsply) and CS; Group II – PA + Primer and CS; Group III - PA and TPCC; Group IV - PA + XT Primer (3M Unitek) and TPCC; and Group V – Transbond Plus Self Etching Primer - SEP (3M Unitek) and TPCC. Twenty-four hours after bracket bonding, half of the specimens from each group were submitted to AAA for 960 hours. The samples were submitted to the shear bond strength (SBS) test in a universal test machine (0.5mm/min). ARI was evaluated under a loupe (10X) and quantified using a score (0-3). Data were submitted to 2-way ANOVA and Bonferroni’s test (????a=5%). Results: Group II without AAA showed the highest mean value of SBS (p
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87751fd123743a5bffb3202069b1ff12 https://doi.org/10.12974/2311-8695.2013.01.01.5 Zobrazit plný text záznamu