Maxillary molar distalization with the miniscrew-supported removable palatal arch
10.3969/j.issn.1001-3733.2024.03.016
- VernacularTitle:上颌腭侧微螺钉可摘式腭杆远中移动磨牙的研究
- Author:
Wucheng HE
1
;
Zelin WU
;
Yinglan LI
;
Guangwei LU
;
Shuhe YAN
Author Information
1. 810099,西宁市第一人民医院口腔正畸科
- Keywords:
Miniscrew;
Removable palatal arch;
Molar distalization;
Maxillary crowed;
Maxillary protrusion
- From:
Journal of Practical Stomatology
2024;40(3):401-406
- CountryChina
- Language:Chinese
-
Abstract:
Objection:To evaluate the effects of the miniscrew supported removable palatal arch for maxillary molar distalization.Methods:33 patients with mild to moderate crowding teeth and maxillary protrusion were treated with the miniscrew supported remova-ble palatal arch.The lateral cephalograms and dental plaster models were taken at the beginning of the treatment(T0)and at the end of molar distalization(T1).The multicentre variables were measured and compared with statistical software.Results:Cephalometrics showed that the average distance(mm)of the firs molar distalization was 3.6(P＜0.001),molar distal tipping was 6°(P＜0.001)and molar intrusion(mm)was 0.6(P＜0.05).The measurements of right and left molar distalization on plaster models were 4.2 mm(P＜0.001)and 4.0 mm(P＜0.001)respectively,the width of dental arch was increased by 3.1 mm(P＜0.05).The data of distalization of the first molar showed no statistical difference between right and left side on plaster cast and between model and cephalometric meas-urements.On the right side the angle between the mesial-distal tips line and the middle line was increased by 1.6°(P＞0.05),on the left by 4.8°(P＜0.05).Conclusion:The none extraction therapy for mild to moderate crowding teeth and maxillary protrusion can be realized by miniscrew supported removable palatal arch distalization appliance.
