Effects of class Ⅲ traction assisted by implant anchorage on unilateral cleft and palate patients in treatment of skeletal class Ⅲ malocclusion
10.3760/cma.j.issn.1671-0290.2023.06.013
- VernacularTitle:种植支抗辅助口内Ⅲ类牵引对单侧唇腭裂患儿骨性Ⅲ类错合畸形的效果
- Author:
Dongjie ZHANG
1
;
Zhanyi YE
;
Fan LI
;
Baojun LONG
Author Information
1. 广州市妇女儿童医疗中心口腔正畸科，广州 510120
- Keywords:
Cleft lip;
Cleft palate;
Skeletal class Ⅲ malocclusion;
Maxillary protraction;
Implant anchorage;
Cephalometric
- From:
Chinese Journal of Medical Aesthetics and Cosmetology
2023;29(6):482-487
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate and compare the outcomes of maxillary protraction treatment assisted by temporary anchorage devices (TADs) and removable biteplate in cleft lip and palate patients using cephalometric analysis.Methods:Fifty-four cleft lip and palate patients were divided into 3 groups based on different maxillary protraction treatments: bitepalate removable appliance group (group A), maxillary protraction treatment assisted by TADs group (group B) and control group (group C). Lateral cephalograms were taken at the start and the end of maxillary protraction. Skeletal, dental and soft tissue changes were measured using Dolphin software and compared between groups.Results:The average protraction time of groups A and B were (8.51±1.33) and (9.20±1.45) months ( P=0.146), respectively. A point moved forward by 4.08 mm in group A and 4.83 mm in group B were noted, without significant differences between the two groups. Compared to group C, ANB and wits was highly improved after protraction in groups A and B. U6-VRmx increased by 0.46 mm and U1-pp increased by 0.63 mm in group B, both of which were significantly smaller than those of group A (both P<0.05), suggesting that maxillary protraction treatment assisted by TADs could reduce molar advancement and upper incisor protrusion. Conclusions:Both maxillary protraction treatment assisted by TADs and removable biteplate could significantly improve skeletal class Ⅲ malocclusion in unilateral cleft and palate patients. Maxillary protraction treatment assisted by TADs could reduce molar advancement and upper incisor protrusion.
