Fig. 2From: A clinical study of the piezosurgery, high-speed contra-angle handpiece, and the combined application of both for extraction of embedded supernumerary teethPre-operative CBCT data of the patient. a Preoperative CBCT picture shows that: an inverted embedded supernumerary teeth can be seen above the 21 apex, close to the nasal cavity; b Crown position; c Horizontal positionBack to article page