Q: Dr. Eppley, Can a chin augmentation be done that doesn’t simply just push the bottom tip of the chin forward ?(but fills in below the lower lip as well)
A:In regards to your chin augmentation question, the depth of the labiomental fold (under the lower lip) can never be changed by any form of chin augmentation and it will always end up a little deeper with any form of increased chin projection. That is because the labiomental fold represents the attachment of the mentalis muscle above the chin bone. The attachment of the muscle can not be changed or removed for the obvious functional reason. That being said it can be treated at the same time as a chin augmentation by either fat injections (externally) or a dermal-fat graft. (internally) The latter is more effective at reducing the labiomental fold than the former.
The only facial bone procedure that can change the position of the lower lip as well as the depth of the labiodental fold is to advance the whole lower jaw. A mandibular advancement, unlike a more limited chin advancement (by implant or bone movement) carries with it the teeth and its attached bone. (dentoalveolar unit) This is what pushes the lower lip and labiodental fold forward.
Dr. Barry Eppley