Fig. 6From: The three-dimensional displacement tendency of teeth depending on incisor torque compensation with clear aligners of different thicknesses in cases of extraction: a finite element studyThe influence of aligner thickness on the stress value of PDL for incisor. a The principal stress of the anterior teeth with the 0.5 mm-thick aligner under the condition of no torque compensation. b The principal stress of the anterior teeth with the 0.75 mm-thick aligner under the condition of no torque compensation. c The principal stress of the anterior teeth with the 0.5 mm-thick aligner under the condition of torque compensation. d The principal stress of the anterior teeth with the 0.75 mm-thick aligner under the condition of torque compensationBack to article page