Dimples after Chin Implant? (photos)

Hi Doctors. I'm about 3 weeks post-op chin implant. Recovery went smooth. The only issue is, I've developed two dimples, one in particular is quite big. I've never had dimples before. Are these likely permanent and if so, is there anything that can be done about them? Does it point to any other potential issues such as mentalis strain that should concern me? I should note, I literally had no chin bone before, as you can see from my pre-op xray, so the implant was quite big. 8mm silastic to be exact.