Two-jaw surgery
Anterior Segment Osteotomy (Protruding Mouth Surgery)
Anterior Segment Osteotomy (ASO) is a jaw surgery designed to correct protruding mouths caused by forward-leaning gum bones. The procedure involves creating space by removing premolars and retracting the front segment of the jaw to balance the facial profile.
Who it suits
- Individuals with protruding gums rather than just misaligned teeth (over 4mm).
- Patients who show excessive gum tissue when smiling (gummy smile).
- Those with a receding chin or asymmetrical facial proportions due to jaw position.
Technique highlights
- Targets protrusion by removing premolars and retracting the anterior bone segment.
- Improves both facial aesthetics and functional dental occlusion.
- Performed under general anesthesia by a multidisciplinary team of surgeons and orthodontists.
Surgical steps
- Extraction of one premolar on each side to create space for retraction.
- Surgical removal of the alveolar bone in the gap created by the extractions.
- Moving the anterior teeth and jaw bone backward into the planned position.
- Fixing the jaw bone in its new position to ensure stability and proper alignment.
Recovery & aftercare
- Hospitalization for 1 day is required for monitoring.
- Stitches are typically removed 2 weeks after the procedure.
- Standard recovery period is 2–4 weeks before returning to normal daily activities.
Risks & things to consider
- General risks include bleeding, infection, and inflammation common to major bone surgery.
- There may be temporary numbness or sensory changes in the lips and gums.
- Precise preoperative diagnosis is essential to distinguish between teeth protrusion and bone protrusion.
Frequently asked questions
Do I need to wear braces after the surgery?
Yes, most patients require post-operative orthodontic treatment to ensure a perfect bite and long-term stability.
When can I return to my daily routine?
Major swelling subsides within 2–4 weeks, and most patients return to work or school during this time. Full recovery takes several months.
Cases in this area
Before & After gallery
Case photos show individual results. Outcomes vary with anatomy and aftercare.
Other procedures in this area
- Double Jaw Surgery (Orthognathic Surgery)
- No-Tie Double Jaw Surgery
- Surgery-First Jaw Correction (Pre-Orthodontic Surgery)
- Dissolvable Pin Jaw Surgery (Invisible Osteosynthesis)
- Protruding Mouth Surgery (No Braces Option)
- Jaw Surgery for Protruding Mouth Correction
- Triple Jaw Surgery for Protruding Mouth and Receding Chin
- Lower Jaw Surgery (Mandibular Osteotomy)
Adapted from ID Hospital official material · View source page