Endodontic instruments are used to clean and enlarge the endodontic cavity space (ECS), also known as the root canal system, of a human tooth. This document describes novel endodontic instruments that are radially compressible, and methods for their use. Some embodiments include a shank and a body with a working surface. At least a portion of the working surface may define a center of mass path that spirals. The center of mass of a transverse cross-section of the working surface at the shank end can be offset from the axis of rotation of the instrument.L'invention concerne des instruments endodontiques utilisés pour nettoyer et agrandir l'espace de cavité endodontique (ECS), également appelé système de canal radiculaire, d'une dent humaine. L'invention concerne de nouveaux instruments endodontiques qui sont radialement compressibles, ainsi que des procédés pour leur utilisation.
