Please use this identifier to cite or link to this item: http://repositorio.ufpa.br:8080/jspui/handle/2011/6642
Title: In vitro analysis of shear bond strength and adhesive remnant index comparing light curing and self-curing composites
metadata.dc.creator: NEVES, Murilo Gaby
BRANDÃO, Gustavo Antônio Martins
ALMEIDA, Haroldo Amorim de
BRANDÃO, Ana Maria Martins
AZEVEDO, Dário Ribeiro de
Keywords: Resinas compostas
Resistência ao cisalhamento
Microscopia eletrônica de varredura
Issue Date: 2013
Citation: NEVES, Murilo Gaby et al. In vitro analysis of shear bond strength and adhesive remnant index comparing light curing and self-curing composites. Dental Press Journal of Orthodontics, Maringá, v. 18, n. 3, p. 124-129, maio/jun. 2013. Disponível em: <http://www.scielo.br/pdf/dpjo/v18n3/20.pdf>. Acesso em: 06 maio 2015. <http://dx.doi.org/10.1590/S2176-94512013000300020>.
Abstract: OBJECTIVE: To evaluate, in vitro, the shear bond strength of self-curing (ConciseTm - 3M and Alpha Plast - DFL) and light-curing composites (TransbondTM XT - 3M and Natural Ortho - DFL) used in orthodontics bonding, associated to Morelli metal brackets, with further analysis of adhesive remnant index (ARI) and enamel condition in scanning electron microscopy (SEM). METHODS: Forty human premolars, just extracted and stored in physiologic solution 0.9 % were used. Randomly, these samples were divided in four groups: G1 group, the brackets were bonded with ConciseTM - 3M composite; in G2 group, Alpha Plast - DFL composite was used; in G3 group, TransbondTM XT - 3M was used; in G4 group, Natural Ortho - DFL composite was used. These groups were submitted to shear strength tests in universal testing machine, at 0.5 mm per minute speed. RESULTS: Statistical difference between G3 and G4 groups was recorded, as G4 showing higher strength resistance than G3. In the other hand, there were no statistical differences between G1, G2 and G3 and G1, G2 and G4 groups. ARI analysis showed that there was no statistical difference between the groups, and low scores were recorded among then. The scanning electron microscopy (SEM) analysis revealed the debonding spots and the enamel surface integrity. CONCLUSIONS: Shear bond strength was satisfactory and similar between the composites, however Natural Ortho - DFL revealed best comparing to TransbondTM XT - 3M.
URI: http://repositorio.ufpa.br/jspui/handle/2011/6642
ISSN: 2176-9451
Appears in Collections:Artigos Científicos - FOUFPA/ICS

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