A Brief Analysis of the Maxillary Arch Expansion Effect with Clear Aligners in Mixed Dentition
Objective To investigate the effect of clear aligners on maxillary expansion in patients with mild to moderate maxillary stenosis in mixed dentition.Methods Fifteen patients with mild to moderate maxillary stenosis in mixed dentition were selected from the Department of Orthodontics of the author's hospital from January 2019 to December 2021,and maxillary expansion was completed with clear aligners.The arch width of each tooth before and after treatment was measured by the three-dimensional digital dentition model,and th expansion volume and expansion efficiency of each tooth were calculated.Results After treatment,the arch width of each tooth was increased,and the difference was statistically significant(P＜0.05).However,the actual expansion of each tooth was less than the preset expansion,and the difference was statistically significant(P＜0.05).The expansion efficiency of primary canine,first primary molar,second primary molar,and first permanent molar was(68.3±6.58)%,(74.8±7.83)%,(72.5±8.37)%,and(71.2±7.49)%,respectively.Conclusion In the case of mild to moderate maxillary stenosis,the clear aligners can increase the width of the maxillary arch during the mixed dentition to some extent,and has a good effect on arch expansion,which can be used more under the clinical indications.
arch expansioninvisible treatment without bracketmixed dentitionmaxillary transverse deficiencymalocclusion
万方数据
维普
