How Much Bone Resorption Occurs With A Sliding Genioplasty?

Q: Dr. Eppley, How much bone resorption occurs with a sliding genioplasty? With an 8mm chin movement, per se. I have read implants cause more bone resorption than sliding genioplasty, and sliding genioplasty usually only causes 0.5 mm resorption or less. But a couple articles suggested different amounts for sliding genioplasty bone resorption. Thank you for your input and help.

A: Chin implants will often cause some slight implant settling into the bone of 1mm or less. (this is not bone resorption, it is implant setting) Sliding genioplasty will result in some mild bone resorption of the most projecting part of the chin of which the amount is related to the magnitude of advancement. For an 8mm advancement it will likely be in the range of 1 to 1.5mms.

Dr. Barry Eppley

Indianapolis, Indiana