TY  - JOUR
AU  - WENG, Jia-hua
AU  - WANG, Da-wei
PY  - 2016
TI  - Clinical research of upper incisor brackets upsidedown in patients with skeletal Class Ⅲ malocclusion
JO  - Journal of Prevention and Treatment for Stomatological Diseases
SN  - 2096-1456
SP  - 665
EP  - 670
VL  - 24
IS  - 11
AB  - ObjectiveTo assess the clinical effectiveness of mild to moderate skeletal Class Ⅲ malocclusion cases by placing upper incisor brackets upside down with straight wire appliance.MethodsSixty-six patients with mild to moderate skeletal Class Ⅲ in the early permanent dentition were chosen and randomly allocated to two groups. Thirty three patients were treated with brackets bonded commonly (17 non-extraction and 16 extraction) and the other 33 patients were treated with brackets bonded upside down (18 non-extraction and 15 extraction). Lateral cephalometric radiographs were taken and measured before and after treatment, and statistical analysis was performed.ResultsIn non-extraction cases, there were significant differences of the change with treatment of SNA(°), U1-SN(°) and U1-NA(°) between the experimental group and the control group (P＜0.05). In extraction cases, there were significant differences of the change with treatment of SNA(°), U1-SN(°), U1-NA(mm), U1-NA(°), L1-MP(°), L1-NB(mm), L1-NB(°) and U1-L1(°) between the experimental group and the control group (P＜0.05).ConclusionBonding upper incisor brackets upside down could increase labial roots torque of upper incisors in skeletal Class Ⅲ malocclusion cases, which helped improve esthetic and function of the patients to some extent.
UR  - https://doi.org/10.12016/j.issn.2096-1456.2016.11.009
DO  - 10.12016/j.issn.2096-1456.2016.11.009