Comparison of clinical outcomes between Invisalign and conventional fixed appliance therapies in adult patients with severe deep overbite treated with nonextraction.

Abstract

INTRODUCTION:

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.

METHODS:

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.

RESULTS:

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.

CONCLUSIONS:

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.

• Authors: Koji Fujiyama, Yohei Kera, Shimizu Yujin, Chihiro Tanikawa, Takashi Yamashiro, Xiaohan Guo, Andy Ni, Toru Deguchi
• Journal: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics (Am J Orthod Dentofacial Orthop) Vol. 161 Issue 4 Pg. 542-547 (Apr 2022) ISSN: 1097-6752 [Electronic] United States
• PMID: 34629236 (Publication Type: Journal Article)
• Copyright: Copyright © 2021 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.

Topics

• Adolescent
• Adult
• Cephalometry
• Humans
• Orthodontic Appliance Design
• Orthodontic Appliances, Fixed
• Orthodontic Appliances, Removable
• Overbite (therapy)
• Retrospective Studies
• Young Adult