YU.G. KONONENKO CYLINDER THAT MODIFIES FORMS IN PREPARATION OF TEETH FOR CROWNS

摘要

The cylinder that changes shape during preparation of teeth for crowns made of metal, consisting of working and tail parts, its hollow part is working on the inside of the cylinder and the front side of the abrasive is coating. Cylindrical working part is flexible, consists of a flexible metal frame, on the inside of which a flexible metallic grid is fixed that during the preparation of the tooth changes its shape and takes the form of a tooth, while equally prepares all four sides of the tooth, then the crown of the tooth, usually acquires - view from above - oval.