Comparison of frame and fixed protraction appliances in the treatment of skeletal Ⅲ malocclusion in mixed dentition
10.3969/j.issn.1001-3733.2014.02.018
- VernacularTitle:支架式与固定式前牵引矫治替牙期骨性Ⅲ类错牙合的比较
- Author:
Chunyan LIU
;
Haiyan LU
;
Wen WANG
;
Wensheng MA
;
Xiaoying HU
;
Wenjing CHEN
- Publication Type:Journal Article
- Keywords:
Maxillary protraction;
Skeletal class Ⅲ malocclusion;
Mixed dentition
- From:
Journal of Practical Stomatology
2014;(2):227-231
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the efficacy of casting frame and traditional fixed maxillary protraction appliances in the correc-tion of skeletal Ⅲ malocclusion in mixed dentition.Methods:30 cases with Class Ⅲ malocclusion in mixed dentition were random-ly divided into 2 groups.Casting frame maxillary protraction appliance was applied in group 1 (1 5 cases)and traditional fixed maxil-lary protraction appliance in group 2(15 cases).X-ray cephalometric examination results before and after treatment,treatment time, and the number of visit in 2 groups were analyzed with SPSS 1 3.0.Results:The treatment time in group 1 and 2 was (7.03 ±1 .32) and (9.07 ±1 .31 )months(P <0.05),the number of visiting was (8.00 ±1 .46)and (10.47 ±1 .85)(P <0.05),the cephalomet-ric measurement change of △U1 -SN was (3.85 ±0.95)°and (5.25 ±0.95)°(P <0.05),respectively.Conclusion:Casting frame protraction appliance is an efficient and practical intraoral device,which can prevent anterior upper teeth inclined to labial.
