Bimaxillary Surgery (Two-Jaw Surgery) for Prognathism and Facial Asymmetry: A 6-Month Case Study

This case study explores the successful treatment of prognathism (mandibular protrusion) and facial asymmetry using 3D bimaxillary surgery (also known as two-jaw surgery or double jaw surgery). Dr. Park Jong-chul, a leading oral and maxillofacial surgeon, presents a patient who underwent this procedure and experienced remarkable improvements in facial balance and function.

The Challenge: Addressing Pre-existing Asymmetry and Prognathism

Pre-existing Asymmetry and Prognathism

The patient initially presented with both prognathism and facial asymmetry. Despite undergoing two years of pre-surgical orthodontic treatment, achieving optimal dental alignment for a stable surgical outcome was challenging. Due to personal circumstances, delaying the surgery further was not feasible.

3D Surgical Planning and Occlusal Considerations in Two-Jaw Surgery

• In cases of facial asymmetry, achieving complete decompensation of the teeth can be complex. While orthodontists often prefer maximum intercuspation for post-operative stability, prioritizing this can sometimes exacerbate skeletal asymmetry.

  

  3D Surgical Planning and Occlusal Considerations in Two-Jaw Surgery

• To overcome this challenge, Dr. Park employed 3D imaging and virtual surgical planning to meticulously plan the bimaxillary surgery (two-jaw surgery). The mandible was strategically repositioned to correct the asymmetry, even though this temporarily created a crossbite. This approach prioritized long-term skeletal harmony over immediate post-operative occlusal perfection.

  

  3D Surgical Planning and Occlusal Considerations in Two-Jaw Surgery

3D Surgical Planning and Occlusal Considerations in Two-Jaw Surgery

Surgical Outcome and Post-Operative Progress of Bimaxillary Surgery

Surgical Outcome and Post-Operative Progress of Bimaxillary Surgery

Surgical Outcome and Post-Operative Progress of Bimaxillary Surgery

• The two-jaw surgery successfully addressed the patient's prognathism and facial asymmetry. Post-operative CT scans confirmed the anticipated crossbite, which remarkably resolved within six months through a combination of orthodontic treatment and natural mandibular autorotation.

  

  the anticipated crossbite, which remarkably resolved within six months

  

  the anticipated crossbite, which remarkably resolved within six months

  
  

6-Month Follow-Up: Achieving Facial Harmony After Jaw Alignment Surgery

• At the 6-month follow-up appointment, the patient demonstrated significant improvement in facial symmetry and occlusion. The crossbite had almost entirely resolved, and the chin position had undergone minor adjustments due to autorotation, further refining the facial profile.

Benefits of Two-Jaw (Bimaxillary) Surgery

• This case study illustrates the numerous benefits of two-jaw (bimaxillary) surgery, including:

  • Correction of jaw deformities like prognathism and facial asymmetry.

  • Improved facial aesthetics and harmony.

  • Enhanced chewing and speaking function.

  • Increased self-confidence and quality of life.

    
    

Conclusion

• This case highlights the effectiveness of 3D bimaxillary surgery (two-jaw surgery) in correcting complex dentofacial deformities. Dr. Park's expertise in surgical planning and his collaborative approach with the orthodontist ensured a successful outcome for the patient, achieving both functional and aesthetic improvements.