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FartingSponge
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There are many types of jaw deformities. A not so common one is an overdeveloped maxilla which is often paired with an underdeveloped mandible (lower jaw), or it can create an illusion that the mandible is underdeveloped.
This is an example for an overdeveloped maxilla.
There are two major approaches that mostly surgeons do:
1. Total maxillary setback with mostly counter clockwise rotation + genioplasty
2. Only CCW rotation without maxillary setback (basically they move the mandible to match the maxilla)
The second option is not good, if you have an overdeveloped maxilla because it might make your philtrum even more prominent and you get a so called 'chimp limp' effect.
Example:
Total maxillary setback surgery with mandibular advancement before after photos:
Her middle face looks shorter. Cheekpads got pushed up and now it looks more harmonious.
Side profile:
Mandible and chin are more prominent.
Another example:
Conclusion:
If you have long midface first make sure that your maxilla is not overdeveloped. (You need to get x-ray or CT to make sure.)
A total maxillary setback is not a common surgery and it requires a different approach, like on the picture below.


This is an example for an overdeveloped maxilla.
There are two major approaches that mostly surgeons do:
1. Total maxillary setback with mostly counter clockwise rotation + genioplasty
2. Only CCW rotation without maxillary setback (basically they move the mandible to match the maxilla)
The second option is not good, if you have an overdeveloped maxilla because it might make your philtrum even more prominent and you get a so called 'chimp limp' effect.
Example:

Total maxillary setback surgery with mandibular advancement before after photos:


Her middle face looks shorter. Cheekpads got pushed up and now it looks more harmonious.
Side profile:


Mandible and chin are more prominent.
Another example:

Conclusion:
If you have long midface first make sure that your maxilla is not overdeveloped. (You need to get x-ray or CT to make sure.)
A total maxillary setback is not a common surgery and it requires a different approach, like on the picture below.
