Segmental Multiple-Jaw Surgery without Orthodontia: Clear Aligners Alone

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Abstract

Summary:

Segmental Le Fort I osteotomy, a complex procedure with many mobile parts, has traditionally required presurgical orthodontics with conventional braces, composed of metal brackets, bands, and archwires. These appliances are not always accepted by patients, particularly older teenagers and professional adults who previously endured traditional orthodontia during adolescence, and now require retreatment because of jaw growth differences necessitating orthognathic surgery. Less obtrusive orthodontic therapies, involving clear aligners (e.g., Invisalign), are becoming increasingly popular, as they are less noticeable and less aesthetically objectionable. They are typically indicated for milder occlusal discrepancies, such as crowding and minor rotations, without significant vertical or transverse problems. Clear aligners in conjunction with orthognathic surgery for severe dentofacial problems are progressive and not widely used. Moreover, the most complicated of orthognathic sequences, segmental double-jaw surgery, has never before been described to be performed using Invisalign. Several potential challenges exist when performing segmental double-jaw surgery with Invisalign (i.e., no bonded or banded appliances, and no archwire). The purpose of this article is to review the feasibility of segmental double-jaw surgery without orthodontia (Invisalign only), report a series of cases, and review the technical steps involved.

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