The effects of modified expander in the orthodontic treatment of the cases with Angel Ⅰ malocclusion

VernacularTitle:改良扩弓器在矫治安氏I类牙列拥挤病例中的临床疗效分析及应用初探
Author: Lu LIU ; Jie KE ; Guizhi ZHAO ; Rui WANG ; Yang LIU ; Dong ZHENG
Publication Type:Journal Article
Keywords: Expander; Non-extraction orthodontic treatment; Effect evaluation; Digital model
From: Journal of Practical Stomatology 2016;32(4):512-516
CountryChina
Language:Chinese
Abstract: Objective:To investigate efficacy of modified expander in the treatment of non-extraction patients with Angel Ⅰ maloccul-sion.Methods:1 4 Angel Ⅰcases aged 1 0 -1 4 years treated by non-extraction and fixed rapid expander.Jaw bones of the cases were laser scanned before(T1 )and after treatment(T2).The differences of arch width and length between T1 and T2 were analyzed.The In-dex of treatment complexity,outcome and need(ICON)was used to assess the pre-treatment and post-treatment study models.Data were statistically analysed with SPSS1 3.0 software.Results:The arch width increased significantly from T1 to T2.Good occlusal rela-tionship and soft tissue profiles were achieved in all cases.All cases were evaluated as greatly improved by ICON.Conclusion:AngelⅠ malocclusion can be treated successfully by increasing arch width with fixed rapid expander technique without tooth extraction.