TY  - JOUR
AU  - ZHANG, Liao
AU  - LIU, Ying
PY  - 2016
TI  - A clinical research on the face type and double occlusal plane level change in Angle’s Class Ⅱ, division 2 patients before and after treatment
JO  - Journal of Prevention and Treatment for Stomatological Diseases
SN  - 2096-1456
SP  - 411
EP  - 415
VL  - 24
IS  - 7
AB  - ObjectiveTo evaluate the change of the the face type and the cant of the occlusal plane of the patients with Angle Class Ⅱ, division 2 before and after orthodontic treatment, in order provide evidence for clinical treatment.MethodsIn 30 patients with Angle Class Ⅱ, division 2, 4 first premolars were extracted. They were treated with straight wire appliance. Pre-treatment and post-treatment lateral cephalograms of the patients were obtained and evaluated. Seven parameters including AOP-FH, POP-FH, OP-dif, MP-FH, N-Me, N-ANS, ANS-Me were selected and analyzed.ResultsThere were significant differences in AOP-FH, N-Me, POP-FH and ANS-Me (P＜0.05), while there were no significant differences in other parameters.ConclusionAfter the straight wire appliance treatment for Angle Class Ⅱ division 2 patients, heights of 1/3 lower face increases, both anterior and posterior occlusal plane decreases, especially the anterior occlusal plane.
UR  - https://doi.org/10.12016/j.issn.2096-1456.2016.07.007
DO  - 10.12016/j.issn.2096-1456.2016.07.007