Fujiyama Koji, Kera Yohei, Yujin Shimizu, Tanikawa Chihiro, Yamashiro Takashi, Guo Xiaohan, Ni Andy, Deguchi Toru
Private practice, Kyoto, Japan.
Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Osaka University, Osaka, Japan.
Am J Orthod Dentofacial Orthop. 2022 Apr;161(4):542-547. doi: 10.1016/j.ajodo.2020.08.023. Epub 2021 Oct 8.
The use of aligner therapy for orthodontic treatment has increased substantially in the past decade. However, no study has compared treatment outcomes between the conventional fixed appliance and Invisalign therapies in patients with a severe deep overbite.
This study included 50 consecutive adult patients who underwent treatment with either Invisalign (n = 25; mean age, 23.3 ± 8.5 years) or a conventional fixed appliance (n = 25; mean age, 23.1 ± 6.5 years) to correct overbite >5 mm and >60% deep overbite. Cephalometric analysis and peer assessment rating was used to compare the clinical outcome between groups.
Cephalometric analysis showed significant differences in N-Me (P = 0.0005) and Mp-L6 (P = 0.0001) between Invisalign and fixed appliance treatment groups. No significant differences were observed in the peer assessment rating analysis or total treatment duration between the 2 groups.
Both Invisalign and conventional fixed appliances were effective in treating patients with a severe deep overbite. Invisalign therapy may be preferable over conventional fixed appliance therapy in patients with high angle and deep overbite. However, because this study had a retrospective design, the results should be viewed with caution.
在过去十年中，正畸治疗中使用隐形矫治器疗法的情况大幅增加。然而，尚无研究比较传统固定矫治器与隐适美疗法对严重深覆合患者的治疗效果。
本研究纳入了50例连续的成年患者，他们分别接受了隐适美治疗（n = 25；平均年龄，23.3 ± 8.5岁）或传统固定矫治器治疗（n = 25；平均年龄，23.1 ± 6.5岁），以矫正覆合大于5mm且深覆合大于60%的情况。采用头影测量分析和同行评估评分来比较两组之间的临床结果。
头影测量分析显示，隐适美治疗组与固定矫治器治疗组在N-Me（P = 0.0005）和Mp-L6（P = 0.0001）方面存在显著差异。两组在同行评估评分分析或总治疗时长方面未观察到显著差异。
隐适美和传统固定矫治器在治疗严重深覆合患者方面均有效。对于高角和深覆合患者，隐适美疗法可能比传统固定矫治器疗法更可取。然而，由于本研究采用回顾性设计，结果应谨慎看待。
