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Effect of disinfectant agents on dimensional stability of elastomeric impression materials
G L Adabo1, E Zanarotti, R G Fonseca
1São Paulo State University, Araraquara Dental School, Araraquara, São Paulo, Brazil.
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.
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