DENTAL INSTRUMENT

摘要

The invention relates to a dental instrument for removing caries attacked dentine in connection with chemical-mechanical treatment of caries by means of a caries-dissolving solution applied to the caries for loosening the caries tooth substance. The instrument comprises a tool head (1) with a number of scraping edges or bristles (2, 5, 9) for scraping away the loosened caries tooth substance. In the spacings (2', 9') formed therebetween drops of the g el solution used for the chemical-mechanical treatment can be carried (transported) up to the tooth treatment site. In contrast to previous scrapi ng instruments of this type the instrument is power-driven in order to provide the tool head (1) with a predetermined scraping motion. Preferably the instrument is provided with a torque control alarming or stopping the motion of the instrument as soon as the torque has reached a predetermined limit value.