This contains procedures like whitening and scaling. They often assist while in the modeling and placement of dentures as well as other prosthetic paraphernalia for the oral cavity.?????? ?? ????? ???? ?? ??? ?? ?????? ???? ?? ????? ?? ???? ?????? ?? ??? ??? ????? ??? ??? ???? ??? ??? ??? ?? ?? ?????? ??? ?????? ?? ???? ?????? ????? ???? ?? ?? ?? ?