Maxillofacial growth changes after maxillary protraction therapy in children with class III malocclusion: a dual control group retrospective study

Autor: Shukui Xu, Yang Liu, Yan Hou, Yinghui Li, Xiaolei Ge, Linna Wang, Liru Zhao, Wensheng Ma
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: BMC Oral Health, Vol 24, Iss 1, Pp 1-11 (2024)
Druh dokumentu: article
ISSN: 1472-6831
DOI: 10.1186/s12903-023-03790-6
Popis: Abstract Purpose To investigate the balance between post-treatment effect and continued nature growth after maxillary protraction treatment in patients with skeletal class III malocclusion. Methods 31 patients aged 8.79 ± 1.65 years with skeletal Class III malocclusion had been treated with maxillary protraction and the treatment lasted an average of 1.16 years. The average observation duration after treatment in the maxillary protraction group was 2.05 ± 0.39 years. In the control groups, a sample of 22 patients (9.64 ± 2.53 years) with untreated skeletal class III malocclusion and 24 patients (9.28 ± 0.96 years) with skeletal class I malocclusion were matched to the treatment group according to age, sex and observation period. The mean observation interval of the control groups was 2.39 ± 1.29 years in the class III group and 1.97 ± 0.49 years in the class I group. Results The active orthopedic treatment effect showed a opposite trend to the natural craniomaxillofacial growth effect after treatment in many aspects. In the observation duration of treatment group, decrease in ANB, Wits appraisal and BAr-AAr were statistically significant compared to class I control group (p 0.05), and overjet decreased significantly relative to both of the two control groups (P
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