RESUMO

STATEMENT OF PROBLEM: Difficulties in sterilizing impressions by traditional methods have led to chemical disinfection as an alternative, and some studies have shown that disinfectants may adversely affect impressions. PURPOSE: This study investigated the effect of disinfection methods on the dimensional stability of 6 elastomeric materials. MATERIAL AND METHODS: Impression materials were submitted to the following treatments: immersion in 5.25% sodium hypochlorite solution for 10 minutes, immersion in 2% glutaraldehyde solution for 30 minutes, and no immersion (control). After treatments, impressions were poured, and respective stone casts were measured with a Nikon Profile projector and compared with the master model. RESULTS: The elastomeric materials had different reproduction capacities, and the disinfecting treatments did not differ from the control.

Assuntos

Materiais para Moldagem Odontológica/química , Desinfetantes/química , Borracha/química , Sulfato de Cálcio/química , Técnica de Fundição Odontológica , Éteres/química , Glutaral/química , Humanos , Imersão , Teste de Materiais , Modelos Dentários , Elastômeros de Silicone/química , Hipoclorito de Sódio/química , Esterilização , Sulfetos/química , Propriedades de Superfície , Fatores de Tempo