abrasive properties of three differenttoothpastes

objective: the main purpose of this study was to develop a simple reproducible system to compare abrasive effects of three different toothpastes. materials and methods: a specific mold was used to fabricate 37 samples made of po-lymethylmethacrylate. the samples were stroke by toothbrushes connected to a v8 cross brushing machine in a solution of fluoridated toothpastes and distilled water. the samples were evaluated initially and also after 48 hours. the data were analyzed by one-way anova test. results: no significant differences was found among the three types of toothpastes after 25000 strokes (p=0.427). conclusion: all the three toothpastes presented same abrasive properties.