Mandible reduction can provide long-lasting results because the surgery directly reshapes the mandibular angle and modifies the underlying bone structure. The bone is contoured according to the surgical plan to improve a square, wide, or bulky lower face, creating a slimmer and more balanced facial contour. Once the surgical area has healed and stabilized, these structural changes can be maintained over time.
Is mandible reduction permanent?
Mandible reduction can provide long-lasting results once the surgical area has healed and stabilized. Reshaping the mandibular angle according to the surgical plan creates a new contour for the lower face, helping improve a square, wide, or bulky jawline.
However, “permanent” should not be understood to mean that the face will remain completely unchanged over time. After surgery, the bone still undergoes natural healing and remodeling, while facial appearance can also be influenced by the masseter muscles and soft tissues.
Therefore, when discussing the longevity of mandible reduction, the structural changes to the bone can be considered long-lasting once healing is complete, while the overall facial contour may continue to change naturally over time.
Why can mandible reduction results last long term?
The longevity of mandible reduction results is directly related to the structural changes made to the jawbone during surgery.
1. Mandible reduction directly changes the bone structure
Unlike procedures that primarily affect soft tissue, mandible reduction directly reshapes the mandibular angle.
Based on the patient’s bone structure and surgical plan, the surgeon determines the appropriate extent of bone reduction to improve the width and contour of the lower face. The bone that is cut or contoured results in an actual structural change to the mandible.
This modification of the underlying skeletal structure is the main reason mandible reduction results can be maintained long term.
2. The reshaped bone does not completely return to its original form
After mandible reduction, the surgical area continues to heal and stabilize over time. Although the bone undergoes a natural remodeling process, the reshaped bone does not simply return to its preoperative form.
This is one of the reasons why structural changes achieved through mandible reduction can be maintained over the long term.
Does the jawbone grow back after mandible reduction?
After mandible reduction, the bone undergoes healing and may show a certain degree of natural regeneration. However, this does not mean that the removed or reshaped bone will completely grow back to its preoperative form.
According to a 3D CT follow-up study on mandibular angle reduction, the mean bone regeneration rate was approximately 1.42% in patients who underwent mandibular angle reduction combined with outer cortex ostectomy after a follow-up period of at least 12 months. Postoperative bone volume remained significantly lower than the preoperative volume.
In simple terms, some bone regeneration may occur as part of the healing process, but this does not mean that the mandibular angle will completely grow back to its original shape. Once the bone has healed and stabilized, the structural changes achieved through mandible reduction can remain long lasting.
Factors that can affect mandible reduction results over time
The long-term outcome of mandible reduction depends not only on how much bone is reshaped but also on the patient’s facial structure, surgical plan, and healing process.
| Factor | Role |
|---|---|
| Extent of bone reduction | Determines the degree of change in the mandibular angle and jawline |
| Surgical technique | Influences the precision and continuity of the jawline contour |
| Bone structure | Affects postoperative healing and bone remodeling |
| Masseter muscles and soft tissues | Influence the width and contour of the lower face |
| Recovery process | Affects how long it takes for the jaw area to gradually stabilize |
Identifying the primary cause of a square or wide lower face before surgery is particularly important.
If the width of the lower face is mainly caused by prominent mandibular angles, mandible reduction directly addresses the underlying bone structure to improve the lower facial contour. If the appearance is largely related to the masseter muscles or soft tissues, the surgeon may need to evaluate these factors and determine a more appropriate treatment approach.
At Dr Huan, the mandibular angle, lower border of the mandible, masseter muscles, soft tissues, and overall facial proportions are evaluated before determining the appropriate extent of bone reduction. A 3D Cone Beam CT scan helps assess the bone structure and relevant anatomical features, allowing the surgical plan to be tailored to each individual case.
Frequently asked questions about long-term mandible reduction results
Is mandible reduction permanent?
Mandible reduction creates long-lasting structural changes to the mandibular angle. Once the bone has healed and stabilized, these changes can be maintained over time.
Does the jawbone grow back after mandible reduction?
Some degree of bone remodeling and regeneration may occur after mandible reduction. However, CT follow-up research has shown that postoperative bone volume remains lower than the preoperative volume. Therefore, bone regeneration does not mean that the mandibular angle will completely grow back to its original form.
Can the jaw become square again after mandible reduction?
The reshaped bone does not automatically return to its original form. However, the masseter muscles and soft tissues can continue to change over time, which may alter the appearance of the lower facial contour compared with when the surgical result first stabilized.
Do mandible reduction results change with age?
The reshaped bone structure can remain stable over the long term, but the skin, facial fat, and other soft tissues continue to change as part of the natural aging process. Therefore, the appearance of the jawline many years after surgery may differ from how it looked when the postoperative result first stabilized.
Is mandible reduction permanent?
Mandible reduction can provide long-lasting results because the procedure directly changes the structure of the mandibular angle. Once the surgical area has healed and stabilized, the lower facial contour gradually reflects the newly reshaped bone structure.
If you are considering mandible reduction, you can schedule a consultation with Dr Huan for an evaluation of your facial and jaw structure and to determine an appropriate degree of correction based on your individual facial features.
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