Therapeutic Effects of Invisible Aligners and Damon Self-ligating Brackets in Treating Mild to Moderate Dental Arch Constriction of the Maxilla in Adults:A Comparison
Objective To analyze the changes in teeth and alveolar bone of the maxillary dental arch in adults with mild to moderate dental arch constriction after treatment with invisible aligners and Damon self-ligating brackets using cone-beam computed tomography(CBCT)and the efficacy.Methods The study included 33 patients in the invisalign group and 32 in the Damon group.CBCT images were taken before and after treatment,and the width between the first premolars and first molars,tooth inclination,and buccal alveolar bone thickness were measured using Invivo5 both before and after treatment.Results Compared with the conditions before treatment,the changes in the width between the first premolars and first mo-lars,tooth inclination,and buccal alveolar bone thickness after treatment showed significant difference in both groups(P＜0.05).Differences were observed in the width of the first premolars and the inclination of the first premolars and first molars between Damon group and invisalign group after treatment(P＜0.05).However,no difference was found in the width be-tween the first molars and buccal alveolar bone thickness(P＞0.05).Conclusion Both orthodontic appliances are effective for adults with mild to moderate dental arch constriction of the maxilla.The invisalign group had better expansion effects be-tween the first premolars,and smaller inclination in the first premolar and first molar after expansion.
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