Will a chin implant worsen lip incompetency? (photo)

I think a chin implant would produce a nice improvement without deepening the labiomental sulcus in an untoward manner and without making lip incompetence worse.  The chin implant will support the lower lip to some extent.Find a board certified plastic surgeon who performs hundreds
of facial procedures and chin implants each year. Then look at the
plastic surgeon's website before and after photo galleries to get a
sense of who can deliver the results. Kenneth Hughes, MD Los Angeles, CA

That is why only IN PERSON examinations offer you the opportunity to fully understand all your options i.e. chin implant vs sliding genioplasty.

From my experience, I worry about worsened lip incompetence when there is a deepened crease below the lip (the labio-mental crease), which does not appear to be the case in your situation.  Accordingly, a chin implant should work just fine for you.  While genioplasty should also work quite well, it can create a slight depression to the side of the chin that may not be noticeable in your youth, but might become more of an issue with aging.  Finally, choose a relatively conservative size of implant.  You have an excellent relationship between your chin and neck which serves to lesson the impact of your small chin.  Conversely, too large of an implant might masculinize the lower portion of your face and/or look inappropriate.