EARLY RESULTS AFTER DIRECT PULP CAPPING WITH TRICALCIUM- SILICATE BASED MATERIAL AND MINERAL TRIOXIDE AGGREGATE AND ER: YAG CAVITY PREPARATION IN DOGS

PURPOSE: To study and compare the histological response of dog’s pulp on the fourteenth and thirtieth day after Er:YAG laser preparation and direct pulp capping with tricalcium-silicate-based material and mineral-trioxide-aggregate. METHODS: The experiment was carried out in two dogs. Eight cavity preparations and a communication with the dental pulp were made by Er:YAG dental laser. Four of the cavities were filled entirely with tricalcium-silicate-based material and in four of the preparations mineral-trioxideaggregate was put as a liner and glass-ionomer obturations were made. The fourteenth and thirtieth days histological samples were observed by microscope with a built in photo camera. RESULTS: There is an average degree of pulp inflammation in the samples of both investigated groups on the fourteenth day. On the thirteenth day in the specimens with tricalcium-silicate-based material there is a stripe of pre-dentin and normalization of the beneath pulp tissue. The samples with MTA show a slighter level of pulp healing stimulation compared to the other pulp capping material. No dentin bridge formation is observed. CONCLUSIONS: Direct pulp capping with tricalcium-silicate-based material and mineral-trioxide-aggregate after Er:YAG preparation in dogs provides optimal conditions for a pulp regeneration.