Do V-shaped chin implants exist?

I am getting double jaw surgery,i wanted to get a sliding genioplasty before I get my djs but the surgeon who is doing my djs advised against the sg before my djs(he will instead do it at the time of my jaw surgery) so he recommended i get a chin implant since it can be removed because he knows i want to be less self concious untill my chin/ jaw/bite are fixed so my question is,do v shaped chin implants exiat? Thank you in advance.