Estudio in vitro de la alteración dimensional de impresiones con silicona por adición sometidas a desinfección

Abstract

The purpose of this study was to evaluate the dimensional alteration in type IV gypsum stone casts obtained from dental impressions with addition reaction silicone after disinfection by ten minutes immersion in 2% glutaraldehyde and in 1% sodium hypoclorite. The casts were evaluated with a coordinates measuring machine. Five measurements were evaluated: occlusal mesiodistal diameter of right molar, from distal shoulder to occlusal midpoint of right molar, from occlusal midpoint of right canine to left bicuspid, from occlusal midpoint of left bicuspid to left molar, from occlusal midpoint of right molar to left molar. There were statistically significant differences only for the glutaraldehyde disinfected group compared versus master model. The 1% sodium hypoclorite group didn´t show statistically significant differences in the casts for which reason we can consider it as a first choice disinfectant in the clinical practice.