What This Guide Covers and Who It Is For
This guide explains how surgical hooks on braces prepare you for jaw surgery. It covers the full timeline from initial orthodontic treatment through post-surgical recovery.
If your orthodontist has mentioned jaw surgery, you likely have a skeletal problem that braces alone cannot fix. Orthognathic surgery (the medical term for corrective jaw surgery) physically repositions the upper jaw, lower jaw, or both. Braces with surgical hooks play a key role in making that surgery possible. [1]
This information is for adults and older teens who have been told they need jaw surgery to correct a bite problem, facial asymmetry, or a jaw-related breathing issue. It is also helpful for parents of teens who may need surgical orthodontic treatment in the future.
You can learn more about orthodontic treatment in general on the orthodontics page.
Understanding Surgical Hooks and Jaw Surgery
Surgical hooks are small metal posts that attach to your braces to give the jaw surgeon precise anchor points during the operation.
What Are Surgical Hooks?
Surgical hooks are short metal extensions, typically made of stainless steel. They are either welded directly to the archwire (the main wire running through your brackets) or attached to individual brackets. Each hook sticks out slightly from the surface of the braces.
During surgery, the oral and maxillofacial surgeon uses these hooks as anchor points. Thin wires or elastic bands are looped around the hooks to hold the jaws in the planned position while the surgeon secures the bone with small titanium plates and screws. Without these hooks, the surgeon would have no reliable way to connect the braces to the jaw fixation. [1]
Most patients have between 8 and 14 hooks placed across the upper and lower arches. The exact number and location depend on the type of surgical correction planned. Some orthodontists use kobayashi hooks (small twisted wire hooks) that are tied onto the archwire, while others prefer hooks that are welded or soldered in place. [3]
Why Jaw Surgery May Be Necessary
Jaw surgery corrects problems rooted in the bone, not just the teeth. When the upper and lower jaws are different sizes, misaligned, or positioned incorrectly, braces can only move teeth within the existing bone. They cannot move the bone itself. [2]
Common reasons for orthognathic surgery include severe underbite (lower jaw too far forward), severe overbite (lower jaw too far back), open bite (front teeth do not meet when back teeth are closed), facial asymmetry, and obstructive sleep apnea caused by jaw position. In many cases, these conditions affect eating, breathing, speaking, or long-term dental health. [1]
An orthodontist and an oral and maxillofacial surgeon typically work together to plan and carry out surgical orthodontic treatment. The orthodontist aligns the teeth before and after surgery. The surgeon repositions the jaw bone.
Types of Jaw Surgery
The three main types of orthognathic surgery are upper jaw surgery (Le Fort I osteotomy), lower jaw surgery (bilateral sagittal split osteotomy, often called BSSO), and chin surgery (genioplasty). Some patients need a combination of two or all three procedures. [1]
Le Fort I osteotomy moves the upper jaw (maxilla) up, down, forward, or backward. BSSO moves the lower jaw (mandible) forward or backward. Genioplasty reshapes or repositions the chin bone for functional or structural reasons.
The type of surgery determines where the surgical hooks need to be placed on your braces. Your orthodontist and surgeon coordinate hook placement based on the surgical plan.
Practical Details: Timing, Age, and Preparation
Jaw surgery is typically planned for patients whose jaw growth is complete, usually age 16 to 18 for females and 18 to 21 for males.
Age Recommendations and Growth Considerations
Surgeons generally wait until jaw growth has stopped before performing orthognathic surgery. Operating on a still-growing jaw can lead to relapse, meaning the jaw shifts back toward its original position as growth continues. [1]
For most females, jaw growth is complete around age 16 to 18. For most males, it finishes around age 18 to 21. Your orthodontist may use a series of X-rays taken over several months to confirm that growth has stopped before scheduling surgery.
There is no strict upper age limit for jaw surgery. Adults in their 30s, 40s, and beyond can be candidates if they are in good overall health. Bone density and healing capacity are evaluated on a case-by-case basis.
Pre-Surgical Orthodontic Phase (12 to 18 Months)
Before surgery, braces align your teeth into positions that will fit together correctly after the jaw is moved. This phase typically takes 12 to 18 months, though some complex cases may require longer. [1]
During this phase, your bite may actually look or feel worse. This is normal and expected. The orthodontist is setting up the teeth for where the jaw will be after surgery, not where the jaw is right now. For example, if your lower jaw is going to be moved forward, the orthodontist may align your lower teeth in a way that creates a larger gap between your upper and lower front teeth in the short term. This process is known in clinical practice as dental decompensation, where the orthodontist reverses the natural adjustments your teeth have made to accommodate the jaw misalignment.
Regular orthodontic visits during this phase happen every 4 to 8 weeks. Your orthodontist adjusts wires, changes elastic configurations, and monitors progress toward the surgical goals.
When Surgical Hooks Are Placed
Surgical hooks are typically placed 4 to 8 weeks before the surgery date. The exact timing depends on the surgeon's preference and whether any final orthodontic adjustments are still needed.
Placing the hooks is a quick procedure done at your orthodontist's office. It usually takes 15 to 30 minutes. The orthodontist either welds or crimps the hooks onto the existing archwire, or clips them onto individual brackets. No anesthesia is needed.
Once hooks are in place, you may notice increased irritation to your lips and inner cheeks. The hooks project slightly outward, and soft tissue rubs against them. Applying orthodontic wax over the hooks reduces this friction. Most patients adjust within a week or two. [2]
What to Expect: Step by Step
The surgical orthodontic process has three phases: pre-surgical braces, the surgery itself, and post-surgical braces with recovery.
Final Weeks Before Surgery
In the weeks before surgery, your orthodontist and surgeon finalize the plan. This typically includes new X-rays, 3D imaging (such as a cone-beam CT scan), dental impressions or digital scans, and photographs. The surgeon uses these records to plan the exact movements of the jaw, sometimes with computer-assisted surgical planning software. [4]
Your orthodontist places the surgical hooks during this period. You may also receive a heavier or more rigid archwire, called a surgical wire. This wire stabilizes the teeth so they do not shift during surgery.
You will meet with the surgeon for a pre-operative appointment. This visit covers medical history review, blood work, anesthesia details, dietary instructions, and what to expect on surgery day. You will be told to stop eating and drinking at a specific time the night before.
Surgery Day and Hospital Stay
Orthognathic surgery is performed under general anesthesia in a hospital or surgical center. The procedure typically takes 2 to 4 hours, depending on whether one or both jaws are being moved. [1]
All incisions are made inside the mouth, so there are typically no visible scars on the face. The surgeon cuts the jaw bone in planned locations, moves it into the new position, and secures it with titanium plates and screws. The surgical hooks on your braces are used to apply wires or elastics that guide the jaws into the precise planned position during fixation.
Most patients stay in the hospital for one night. Some surgeries that involve both jaws may require a two-night stay. You will have swelling, numbness, and some pain when the anesthesia wears off. Pain medication is provided.
Recovery and Post-Surgical Orthodontics
The first two weeks after surgery involve the most swelling and discomfort. You will eat a liquid diet during this time, gradually transitioning to soft foods over the next several weeks. Most patients return to work or school within 2 to 4 weeks, though this varies. [1]
Your surgeon will use the surgical hooks to attach guiding elastics (rubber bands) between your upper and lower braces. These elastics help train your bite into the new position as the bone heals. You may need to wear these elastics full-time for several weeks, then part-time for a period after that.
Numbness in the lower lip and chin is a known risk after lower jaw surgery. A 2019 systematic review and meta-analysis found that while sensation improves for most patients over time, approximately 26 percent still reported some altered sensation one year after bilateral sagittal split osteotomy. [5] The degree of numbness varies from mild tingling to more noticeable loss of feeling. In most cases, sensation continues to improve gradually over 12 to 18 months. Your surgeon will discuss this specific risk with you before the procedure.
After the bone has healed (typically confirmed at 6 to 8 weeks post-surgery), your orthodontist begins the final phase of orthodontic treatment. The surgical hooks are usually removed at some point during this phase once they are no longer needed. Braces remain on for an additional 6 to 12 months to fine-tune the bite and tooth alignment. [1] Total orthodontic treatment time, including the pre-surgical and post-surgical phases, is typically 2 to 3 years.
Long-term relapse (the jaw partially shifting back toward its original position) is a known possibility. Research suggests relapse rates vary by procedure and the direction of jaw movement. A meta-analysis of studies involving mandibular setback found clinically significant relapse in some patients, while mandibular advancement procedures tend to be more stable when rigid internal fixation with plates and screws is used. [6] Your surgeon and orthodontist will monitor your progress closely during the post-surgical phase to catch and address any changes early.
Cost Ranges and Insurance Coverage
The combined cost of pre-surgical orthodontics, surgery, and post-surgical orthodontics typically ranges from $20,000 to $50,000. Costs vary significantly by geographic location, provider, hospital facility fees, and case complexity.
This total generally breaks down into two main components. Orthodontic treatment (braces before and after surgery) typically costs $5,000 to $10,000 or more. The surgical portion, which includes the surgeon's fee, hospital fees, and anesthesia, typically ranges from $15,000 to $40,000.
Medical insurance, rather than dental insurance, often covers the surgical portion when orthognathic surgery is deemed medically necessary. Conditions like obstructive sleep apnea, inability to chew properly, or significant facial deformity are commonly approved indications. Your surgeon's office typically handles the prior authorization process with your insurance company. [1]
Orthodontic treatment costs may be partially covered by dental insurance, depending on your plan. Many orthodontic offices offer payment plans. Ask your orthodontist and surgeon about cost estimates and insurance verification before treatment begins.
When to See a Specialist
You should see an orthodontist if you have bite problems that may involve the jaw bone, not just the teeth.
A general dentist can identify signs that suggest a skeletal jaw problem, but orthodontic diagnosis and treatment planning require a specialist. An orthodontist completes two to three years of training beyond dental school, focused on tooth movement and facial growth. Visit the orthodontics page to learn more about what orthodontists do.
Signs that you may need a specialist evaluation include a noticeably recessed or protruding lower jaw, difficulty biting or chewing due to how the jaws meet, chronic jaw pain or TMJ (temporomandibular joint) symptoms, snoring or sleep apnea symptoms, or a previous orthodontist recommendation for surgical correction. [1]
If jaw surgery is recommended, your orthodontist will refer you to an oral and maxillofacial surgeon. These surgeons complete four to six years of surgical residency training after dental school. The orthodontist and surgeon work as a team throughout your treatment. Not every bite problem requires surgery. In many cases, braces or other orthodontic treatment alone can correct the issue. A thorough evaluation with clinical exams and imaging is needed to determine the best approach for your specific situation.
Find an Orthodontist or Oral Surgeon Near You
If you think you may need jaw surgery or have been told surgical hooks will be part of your orthodontic treatment, the next step is connecting with qualified specialists. Use the My Specialty Dentist directory to find an orthodontist or oral and maxillofacial surgeon in your area. You can search by location, read about each provider's background, and request a consultation to discuss your specific needs.
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