Torque control with set-up and auxiliary spring in an adult severe class II case treated by lingual straight-wire appliance, premolar extractions and orthognathic surgery.

Publisher: Masson Country of Publication: France NLM ID: 101184882 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-680X (Electronic) Linking ISSN: 17617727 NLM ISO Abbreviation: Int Orthod Subsets: MEDLINE

Original Publication: Paris : Masson, c2003-

Orthognathic Surgery* ; Malocclusion, Angle Class II*/surgery; Humans ; Adult ; Bicuspid/surgery ; Torque ; Esthetics, Dental ; Cephalometry/methods

This case report describes a complex full-step class II high angle case in an adult patient treated with lingual straight-wire appliance, premolar extractions and orthognathic surgery. With the twofold aim of obtaining ideal occlusal relationship and aesthetic improvement, surgical treatment with appropriate biomechanical strategies, including extraction choice and torque control during space closure, are needed to achieve the planned results. This case report demonstrates the possibility of solving successfully severe sagittal, transverse and vertical discrepancies in an adult patient with surgical treatment by means of an invisible technique. This report also underlines the need for precise biomechanical control, including set-up overcorrections and an auxiliary spring to manage teeth inclination, in lingual orthodontics extraction cases.
(Copyright © 2023 CEO. Published by Elsevier Masson SAS. All rights reserved.)

Keywords: Class II; High-angle; Lingual; Mandible pathology; Orthognathic surgery; Retrognathia; Torque

Date Created: 20230531 Date Completed: 20230807 Latest Revision: 20231116

20231116

10.1016/j.ortho.2023.100776

37257395