Treatment of Mandibular Deviation to the Right with Skeletal Protrusion
The treatment approach depends critically on skeletal maturity: skeletally immature patients should receive dentofacial orthopedic appliances (oral splints) combined with orthodontic treatment, while skeletally mature patients with significant deformity require orthognathic surgery after controlling any underlying inflammatory conditions. 1
Initial Assessment and Classification
Before determining treatment, you must systematically evaluate:
- Skeletal maturity status - this is the single most important factor determining whether orthopedic vs. surgical intervention is appropriate 1
- Severity of dentofacial deformity - assess mandibular asymmetry, degree of protrusion, and functional impairment 1
- Presence of active TMJ inflammation - any underlying arthritis must be controlled before definitive treatment 1
- Functional impairment - evaluate mastication, speech, and TMJ function 2
The mandibular deviation should be classified into one of three categories: positioning factors (dental compensation, habitual posturing), condylar defects (asymmetrical resorption/hyperplasia), or congenital jaw deformities 3
Treatment Algorithm by Skeletal Maturity
For Skeletally Immature Patients
Dentofacial orthopedic appliances (oral splints) are the primary treatment modality and should be initiated early in the development of deformity. 1
- These splints support normal mandibular growth and occlusal development when used in growing patients 1
- The optimal effect is achieved by initiating treatment early, as splints may normalize minor-to-moderate dentofacial deformities and prevent worsening 1
- Splints must be used in conjunction with anti-inflammatory therapies if active TMJ arthritis is present 1
Fixed orthodontic appliances (braces) play a secondary role in skeletally immature patients. 1
- Little is known about the effects of braces alone in patients with skeletal deformities 1
- Orthodontic treatment is mainly considered to establish dental occlusion after the use of orthopedic appliances 1
- Fixed appliances may be used to correct minor malocclusions separately from orthopedic treatment 1
For Skeletally Mature Patients
Orthognathic surgery is the definitive treatment for significant dentofacial deformities in skeletally mature patients, but only after TMJ inflammation is quiescent/controlled. 1, 4
The three general surgical approaches are:
- Mandibular distraction osteogenesis 1
- Orthognathic surgery with TMJ preservation (Le Fort I osteotomy for maxilla + bilateral sagittal split osteotomy for mandible) 1, 4, 2
- TMJ reconstruction with autologous or alloplastic implants 1
For mandibular protrusion with deviation, the typical approach is Le Fort I osteotomy to advance the maxilla combined with bilateral sagittal split osteotomy to setback the mandible. 4, 2
- An advancement of 10-15mm of the maxilla and mandible is necessary when maxillomandibular abnormality exists 4
- Surgery is medically necessary only when skeletal deformities contribute to significant masticatory dysfunction that precludes adequate treatment through dental therapeutics and orthodontics alone 4
Orthodontic braces in skeletally mature patients are used primarily to establish dental occlusion after surgical correction or in conjunction with surgery. 1
Special Considerations for Borderline Cases
For adults with mild-to-moderate skeletal crossbite and mandibular deviation, orthodontic treatment with straight-wire appliance combined with occlusal plate may be effective without surgery. 5
- This approach uses elastics to correct mandibular deviation 5
- This is appropriate only for borderline skeletal cases, not severe deformities 5
Critical Pitfalls to Avoid
- Never proceed with orthognathic surgery if active TMJ inflammation is present - the TMJ arthritis must be quiescent/controlled first 1
- Do not use fixed orthodontic appliances (braces) as primary treatment for skeletal deformities in growing patients - orthopedic appliances should be used first 1
- Avoid delaying treatment in skeletally immature patients - early intervention with orthopedic appliances has the best outcomes 1
- Do not consider surgery for primarily aesthetic concerns without documented functional impairment - this is not medically necessary 4
Post-Treatment Management
After surgical correction:
- Perform full polysomnography between 2-6 months after surgery to assess effectiveness if sleep-disordered breathing was present 4
- Initiate orthodontic treatment 2 weeks post-surgery for final occlusal refinement 2
- Long-term follow-up with appropriate specialists is recommended after surgical treatment 4