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Two-jaw surgery

Lower Jaw Surgery (Mandibular Osteotomy)

Lower jaw surgery (Mandibular Osteotomy) is a corrective procedure that repositions the bottom jaw to treat protrusion, recession, or misalignment. It aims to restore both facial balance and proper dental function, offering a shorter recovery time than double jaw surgery.

Who it suits

  • Individuals with a protruding lower jaw (underbite).
  • Patients with a receding chin or weak lower jaw profile.
  • People experiencing functional issues like difficulty chewing due to an incorrect bite.
  • Those with jaw joint (TMJ) discomfort caused by jaw misalignment.

Technique highlights

  • Targeted correction focusing solely on the mandible (lower jaw) to align it with the upper jaw.
  • Less invasive compared to double jaw surgery, resulting in shorter operative and recovery times.
  • Conducted under general anesthesia for patient comfort and safety.
  • Simultaneous improvement of facial aesthetics and functional dental occlusion.

Surgical steps

  • Pre-operative planning using imaging to determine the exact degree of jaw movement needed.
  • Administration of general anesthesia.
  • An incision is made inside the mouth to access the lower jaw bone.
  • The back portion of the lower jaw bone is cut and repositioned to align with the upper teeth.
  • The jaw is secured in its new position using specialized medical plates or screws.
  • The internal incisions are closed with sutures.

Recovery & aftercare

  • Hospital stay: Typically 1 night for monitoring.
  • Diet: Liquid or very soft diet is required for the first few weeks to avoid pressure on the jaw.
  • Suture removal: Stitches are generally removed about 2 weeks after the procedure.
  • Return to activity: Most patients return to non-strenuous daily routines within 2-3 weeks.

Risks & things to consider

  • Temporary numbness or sensory changes in the lower lip and chin area are common.
  • Potential for post-operative infection if oral hygiene is not strictly maintained.
  • Risks associated with general anesthesia.
  • Initial difficulty in chewing and limited jaw movement during the early healing stage.

Frequently asked questions

How long is the recovery period?

The surgery itself takes about 1.5 hours, but you should plan for a total recovery period of 2-3 weeks before returning to normal daily activities.

Do I need braces with this surgery?

Yes, in most cases, lower jaw surgery requires orthodontic treatment (braces) either before or after the procedure to ensure a perfect bite.

Is a hospital stay required?

You will typically stay in the hospital for 1 night for observation and immediate post-operative care.

Is the procedure painful?

Post-operative pain is managed with prescribed medication. Most patients report discomfort and swelling rather than acute pain.

Cases in this area

Before & After gallery
Lower Jaw Surgery (Mandibular Osteotomy) — ID Hospital before & after

Case photos show individual results. Outcomes vary with anatomy and aftercare.

Other procedures in this area

Adapted from ID Hospital official material · View source page