Comparison of Calcium Hydroxide and Bioactive Glass After Direct Pulp Capping in Primary Teeth

Objective: bioactive glass is often used as a filler material for repair of dental bone defects.in different studies osteogenic potential of this material was proved, but its dentinogenesisproperty is in doubt. the purpose of this study was to evaluate the histologicalpulp responses of calcium hydroxide and bioactive glass placed directly on exposed pulptissues. materials and methods: twenty teeth to be extracted due to orthodontic reasons wereselected. these teeth were divided into two groups and treated with direct pulp capping.calcium hydroxide was used for 10 teeth and bioactive glass for 10 teeth. after 60 daysthe teeth were extracted and prepared for histological evaluation. finally the data was analyzedwith exact fisher test. results: all teeth treated with calcium hydroxide showed inflammation. internal resorptionwas seen in six teeth, abscess in five teeth and dentinal bridge in two teeth. inflammationwas seen in three bioactive glass samples and dentinal bridge in seven teeth, but internalresorption and abscess were not seen. conclusion: bioactive glass appears to be superior to calcium hydroxide as a pulp capping gent in primary teeth.