Surgical-Orthodontic Coordination

Surgical-orthodontic coordination is the joint management of dentofacial deformity by an orthodontist and an oral and maxillofacial surgeon, in which orthodontic tooth movement and orthognathic surgery are planned and sequenced together. It applies when a skeletal discrepancy is too large to correct by moving teeth alone, so the jaw bases themselves must be repositioned surgically while orthodontics aligns the teeth into the new relationship.

Definition

Surgical-orthodontic coordination is the combined treatment of dentofacial deformity in which orthodontic tooth movement is planned and timed together with orthognathic (jaw-repositioning) surgery so that the dental and skeletal corrections produce a single coherent result.

Scope

The entry covers why some malocclusions require a surgical as well as an orthodontic component, the conventional sequence of presurgical orthodontics, surgery, and postsurgical orthodontics, the alternative surgery-first approach, and the importance of shared planning between the two specialties. It treats the topic as a methodological and organizational subject, not as operative or perioperative guidance.

Core questions

• When is a skeletal discrepancy beyond the reach of orthodontic camouflage, so that surgery is needed?
• What is the purpose of presurgical orthodontics, and how does it differ from camouflage treatment?
• How does the conventional orthodontics-first sequence compare with a surgery-first approach?
• How do the orthodontist and surgeon share planning, prediction, and responsibility for the outcome?

Key concepts

• Dentofacial deformity
• Orthodontic decompensation
• Presurgical and postsurgical orthodontics
• Conventional (orthodontics-first) sequence
• Surgery-first approach
• Skeletal stability and relapse
• Joint orthodontic-surgical planning

Mechanisms

In the conventional sequence, presurgical orthodontics first decompensates the dentition — removing the dental tilting that had partly masked the skeletal discrepancy — so that the teeth sit correctly over their own bone bases; the surgeon then repositions the jaws to a planned relationship, and postsurgical orthodontics finishes the occlusion. In the surgery-first approach the skeletal correction is performed at the outset and most tooth movement follows, which may shorten overall treatment time and exploit an accelerated rate of tooth movement after surgery but demands more careful prediction because the teeth are not yet aligned. Because orthodontic decompensation and surgical repositioning are interdependent, the orthodontist and surgeon plan the magnitude and direction of movement jointly before treatment begins.

Clinical relevance

Understanding surgical-orthodontic coordination helps in interpreting how severe skeletal malocclusions are managed and in reading the comparative literature on treatment sequences. The entry describes the structure of combined care for reference purposes; it is not a basis for selecting or planning surgery for an individual patient, which is a clinical decision made by the treating team.

Evidence & guidelines

Comparative evidence is summarized in systematic reviews of the surgery-first versus conventional approaches; a systematic review of systematic reviews by Barone and colleagues found that surgery-first can reduce total treatment time but reported that the overall evidence remained limited and heterogeneous. Narrative syntheses by Proffit and colleagues describe the evolution of combined treatment and current best practices. Much of the literature consists of cohort and observational studies rather than randomized trials.

History

Combined surgical-orthodontic treatment developed as orthognathic surgical techniques became predictable in the second half of the twentieth century; Proffit's early work on combined management of maxillary protrusion in adults exemplifies the emergence of coordinated care. The conventional orthodontics-first sequence became standard, and from the 2000s a surgery-first approach was revived and studied as an alternative aimed at shortening treatment and improving early facial appearance.

Debates

Surgery-first versus conventional orthodontics-first sequencing

Surgery-first may shorten total treatment time and improve early facial appearance, but it requires more demanding prediction and planning because the teeth are not aligned at the time of surgery; reviews report that the comparative evidence remains limited and heterogeneous.

Key figures

• William Proffit
• Timothy Turvey

Seminal works

• proffit-2015
• proffit-1973
• barone-2021

Frequently asked questions

Why can't orthodontics alone correct a severe skeletal discrepancy?

Orthodontics can move teeth but cannot move the jaw bones; when the mismatch between the jaws is too large, the teeth cannot be tipped far enough to compensate without harm, so the jaws themselves are repositioned surgically.

What is the 'surgery-first' approach?

It is an alternative sequence in which orthognathic surgery is performed at the start and most orthodontic tooth movement follows, in contrast to the conventional approach that begins with presurgical orthodontic decompensation.