What kind of jaw movements are typical?

[molestrip]

Moving a lower jaw foward 10-15mm. Is this something that any experienced surgeon can do or something that requires special expertise? How common are movements like these and are they much more complicated than smaller movements?

[PloskoPlus]

5-6 mm upper jaw advancement.

[ForeverDet]

There is no "typical" in the sense of some common movement except that most people even with jaw deformities don't require advancements larger than 10-15 mm. There is no limit though except for the skill of the surgeon and how much movement is needed so with correct hardware used, good surgical technique and sufficient measures taken to ensure post-operative stability, you can move a lower jaw for example up to 40 mm if necessary. I don't think I've seen more than that because a person who requires that extreme lengthening usually has literally no chin definition horizontally. Most people just don't need that much advancement so it's not typical.

[molestrip]

So you're saying 10-15mm is commonly encountered? My surgeon here is planning 10mm but if I ask him to do 12mm, am I pushing the boundaries of what he's likely encountered before?

[ForeverDet]

Yes that amount of movement isn't uncommon although mild to moderate cases could require less.

You can't really tell your doc you want more advancement like it's arbitrary. If 10 mm gets your bite in a class 1 position, gives you adequate chin projection (with or without a sliding genioplasty) and you corrects your mandibular deficiency then that's all you need movement wise.

You could ask him how often he's done 10-15 mm movements and the results. You should feel 100% comfortable with your surgeons plans before the operation.