TY - JOUR AU - Sardarian, Ahmadreza AU - danaei, Shahla Momeni AU - Shahidi, Shoaleh AU - Boushehri, Sahar Ghodsi AU - Geramy, Allahyar PY - 2014 DA - 2014/08/22 TI - The effect of vertical bracket positioning on torque and the resultant stress in the periodontal ligament—a finite element study JO - Progress in Orthodontics SP - 50 VL - 15 IS - 1 AB - The ideal built-in tip and torque values of the straight wire appliance reduce the need for wire bending and hence reduce chair time. The vertical position of the bracket on the tooth surface can alter the torque exerted on the tooth. This is a result of the altered surface curvature observed at each vertical position. To further clarify the role of vertical bracket positioning on the applied torque and the resultant stresses in the periodontal ligament (PDL), we designed a mandibular first premolar using finite element modeling. SN - 2196-1042 UR - https://doi.org/10.1186/s40510-014-0050-0 DO - 10.1186/s40510-014-0050-0 ID - Sardarian2014 ER -