Análise da alteração dimensional em guias cirúrgicos de resina acrílica após esterilização por meio de plasma de peróxido de hidrogênio / Analysis of dimensional alterations of resin acrylic surgical splints after hydrogen peroxide plasma sterilization

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Dimensional alterations in surgical splints made of acrylic resin used in orthognathic surgery were evaluated after hydrogen peroxide gas plasma sterilization. Fifteen specimens of resin acrylic was made by a metal model master with three different thickness: 1,5 mm, 3,0 mm and 5,0 mm, totally 45 specimens. Specimens digital image was acquired before and after sterilization and process by Photoshop® CD2 software. The images were transformed in vector form by Corel Trace® 12 software. The measures were performed by Corel Draw® 12 software. The results were submitted to Wilcoxon statistic method, 0.05 level of confidence. The results showed no statistical differences in 1.5 mm specimens (p0,307) before and after sterilization process but, in 3.0 and 5.0 mm, there was at least one measure statistically different (p=0,011 and p=0,017, respectively). It was possible to conclude that the sterilization process did not lead to dimensional alteration but, in higher thickness probably had happen a proportional polymerization contraction.

ASSUNTO(S)

hydrogen peroxide plasma sterilization acrylic resin orthognathic surgery resina acrílica guia cirúrgico cirurgia ortognática surgical splints esterilização por plasma de peróxido de hidrogênio

ACESSO AO ARTIGO

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