Is there a risk of micro fragments coming off around the screw overtime as I'd worry about silicone leaching into my body?

Your chin in particular is vertically short which is why you have as double chin (technically a pseudo double chin) since the cause if not excessive fat. Vertical chin lengthening (with some increased horizontal projection as well) will solve the double chin issue and make the lower face in...

There are numerous misconceptions in your inquiry including that implants degrade over time, screws causing implant degradation and that a 'pocket adjustment' first needs to be done before a new implant is placed later. In reality you can have your existing chin implant removed and replaced...

Implant migration is the most frequent complaint that I see on Realself. I recommend screw fixation for all chin implants. The current implant can be re-positioned or replaced. However, the vertical length of your chin appears short in profile. If that is truly the case, you might want to...