What is Underbite Surgery?

Underbite surgery, also known as mandibular prognathism, is a surgical procedure that corrects an overgrowth of the lower jaw. This condition can lead to various issues, including:

• Physical Appearance: A prominent lower jaw can affect facial aesthetics.
• Dental Function: Difficulty chewing, swallowing, and speaking.
• Jaw Joint Pain: Chronic discomfort in the temporomandibular joint (TMJ).

Method to remove underbite defect, bring new look

When is Underbite Surgery Necessary?

Underbite surgery may be considered if you experience:

• Difficulty eating or swallowing
• Speech impediments
• Inability to close your lips without effort
• Chronic jaw pain or joint pain
• Halitosis (bad breath) or gum infections

Types of Malocclusions

There are three primary types of malocclusions:

• Class I Occlusion: Considered ideal, though TMJ issues can still arise.
• Class II Malocclusion: The lower jaw is positioned behind the upper jaw, often resulting in an overbite and a small chin.
• Class III Malocclusion: The lower jaw is positioned in front of the upper jaw, leading to an underbite and a prominent chin.

Diagnosing Malocclusions

Treating Underbite

Correcting an underbite can be achieved through various methods, primarily depending on the severity, age, and overall health of the individual.

• Treating Underbite in Children

For children, whose jawbones are still developing, orthodontic treatment is often the preferred method. By using braces and other dental appliances, orthodontists can gradually guide the teeth and jaw into proper alignment. This approach is generally less invasive and can yield long-lasting results.

Fixing underbite in children by braces

• Underbite Correction Surgery for Adults

In adults, orthognathic surgery is typically necessary to correct severe underbites. This surgical procedure involves repositioning the jawbones to achieve a proper bite. A common surgical technique used for this purpose is Bilateral Sagittal Split Osteotomy (BSSO).

The result of combining braces and surgery

The result of underbite correction surgery without braces

The BSSO Procedure involves:

• Jaw Repositioning: The lower jawbone is cut and repositioned to align with the upper jaw.
• Orthodontic Preparation: Before surgery, braces may be used to prepare the teeth for the procedure.
• 3D Surgical Planning: Advanced 3D imaging technology is used to plan the surgery precisely.
• Custom Surgical Plates: Personalized plates are used to secure the repositioned jawbone.

BSSO – the method for lower jaw surgery

BSSO surgery offers several benefits:

• Improved Facial Aesthetics: A more balanced facial profile.
• Enhanced Function: Improved chewing, swallowing, and speech.
• Reduced TMJ Pain: Alleviation of jaw joint discomfort.
• Boosted Self-Confidence: A positive impact on overall well-being.

BSSO Lower Jaw Surgery procedure

Ready to Transform Your Smile?

If you’re considering underbite correction, consult with a qualified oral and maxillofacial surgeon. They will assess your specific needs and recommend the most appropriate treatment plan.

Don’t let an underbite hold you back. Take the first step towards a confident and beautiful smile today.

To schedule a consultation, please call us at 09 6868 1111.