A model for determining the cyclic mechanical strength of endodontic instruments at preparing root canals

摘要

The utility model relates to medicine, namely, to stomatology and may be used in determining the cyclic fatigue rotating machine mechanical tools in conditions close to real, with the creation of the set bending angles, simulating the root canal of the tooth, to eliminate the risk of tool breakage and deformation timing mechanical endodontic instruments. The utility model has a metal plate of stainless steel measuring 38 × 25 mm and 4 mm thick attached to a rigid web. The metal plate 3 formed channel of 2 mm in diameter, which open outside at a distance of 2.0 mm, and bent at angles of 45 °, 60 ° and 90 ° at a distance of 14 mm, 13 mm and 12 mm, respectively, from entering the channels, the model endodontic handpiece further provided with the power supply unit. The model allows to define a cyclic mechanical strength of endodontic instruments and is recommended for selection endodontic mechanical tools of a certain size and taper depending on the bending angle of the root canal of the tooth, thus preventing possible risks of breakage of the tool during processing of a root canal of a tooth.