You do not have a deep mental labial fold. The doctor is wrong. It may not be ideal but google image search it, people with moderate to severe deep bites or short face syndrome or VME with lipcompetence/very crappy lower lip posture have it (I did).
And while a modest chin implant or horizontal sliding genio would deepen it slightly as expected since your advancing the chin point, it would not be aesthetically detrimental as far as I can tell from your pictures.
And just to demonstrate two cases NOT like yours but with Class II jaw/bite issues where one had the right treatment and the other didn't. The following patient is an example of adding chin projection to someone with an already prominent chin and deep fold:
And then here's a patient with a deep fold who correctly had a mandibular advancement instead of just chin augmentation. The lower lip fold is normalized and lower 1/3rd looks pretty perfect.
At this point I'm not going to further recommend anything, just to say that adding moderate projection to your chin via any stable method (if you're really against jaw surgery) is not contra-indicated if we're going by your mental labial fold alone.
Thanks again for your detailed feedback as always.
Honestly, if I walked into a max fac or orthodontist and they told me, "yes, you should consider jaw surgery, you'd see a difference", I'd already be in braces getting ready for my surgery for the end of 2016! Haha.
The fact is, I've already gone to two orthos, two max fac, and all 4 told me I would see very little difference if I were to do jaw surgery as my jaw is only slightly recessed and said if anything I should consider chin augmentation and MAYBE invisalign to fix the class 2 on the right, but even that they said wasnt too vital. I don't want to feel like I'm "pushing" someone to perform jaw surgery on me if I really don't need it. If I was told to go for it, trust me, I would.
As it stands though, I'm mostly just getting differing opinions on implant vs genioplasty. Still not sure which route to take honestly.
Also I forgot to ask. Are there any wearable devices out there that might slightly improve the recessed lower jaw since mine is not an extreme case? Something I could wear at night like a mouth guard that might move it forward? I've seen some things out there like SomnoDent which claim to move the jaw forward, but wondering if it's a gimmick or not.