What Is a Prominent Mandible Angle (Square Jaw)?

A prominent mandible angle, also known as a square jaw, occurs when the lower jawbone’s angles (mandibular angles) are wide or sharp, creating a broad, masculine facial appearance. This feature is often more common in certain ethnicities and can make the face appear wider, shorter, or bulkier than desired.

Key characteristics of a prominent mandible angle include:

• A square or boxy lower face
• Jaw angles that appear sharp and protruding from the front or side
• A heavy, masculine appearance despite a slim body
• A lack of smooth, tapered facial contours
• Difficulty achieving a V-line profile with makeup or non-surgical treatments

What Is Mandible Angle Reduction Surgery?

Mandible Angle Reduction Surgery is a bone contouring procedure that reshapes and slims the mandibular angles to create a softer, more feminine jawline.

At Seoul Cheil Plastic Surgery, this surgery is performed with precision and artistry for natural, balanced results. The procedure involves:

• Making hidden incisions inside the mouth (scar-free technique)
• Carefully shaving or cutting the mandibular angle bone
• Smoothing the contour for a refined, elegant jawline
• Surgery time: Approximately 1.5–2.5 hours under general anesthesia
• Often combined with chin reshaping (genioplasty) or masseter muscle reduction for a full V-line transformation

Why Combine With Other Procedures?

A wide jaw often affects overall facial harmony. For the best results, mandible angle reduction is frequently combined with:

• Chin reshaping (genioplasty) for projection and length balance
• Cortical bone shaving for further slimming
• Cheekbone reduction for facial width harmony
• Fat grafting to restore natural softness

This comprehensive approach ensures a proportionate, natural-looking result.

Key Characteristics of a Face That May Benefit From Mandible Angle Reduction

• A square, broad lower face
• Prominent or sharp jaw angles
• A blunt or heavy jawline
• A face that appears short and wide
• A desire for a slim, feminine V-line profile

Can Botox or Fillers Replace Mandible Angle Reduction?

Botox can temporarily reduce the masseter muscle bulk but:

• It cannot reshape the bone
• Effects last only 4–6 months
• It’s ineffective for true bony prominence

Fillers add volume—not reduce bone width.

For permanent, structural refinement, mandible angle reduction surgery is the only effective solution.

Mandible Angle Reduction at Seoul Cheil Plastic Surgery

Seoul Cheil Plastic Surgery is a leader in facial bone contouring, offering over 20 years of expertise in delivering natural, safe, and beautiful results.

Why patients choose Seoul Cheil:

• Customized 3D analysis for precision planning
• Expertise in scar-free, intraoral bone reshaping techniques
• Comprehensive post-op care for swelling and healing
• Multilingual support for international patients



If you’re ready to achieve a slimmer, more refined jawline, Mandible Angle Reduction Surgery at Seoul Cheil Plastic Surgery can help you transform your profile with confidence.

Book your consultation today and take the first step toward your ideal V-line look!