This contains processes like whitening and scaling. They normally assist inside the modeling and placement of dentures and also other prosthetic paraphernalia to the oral cavity.???? ?? ????????? ?? ?? ???? ?? ???? ???? ? ?????? ?? ????? ?? ? ???? ? ???? ??? ???? ?? ???? ?? ????? ?? ????? ???? ?? ??? ??? ???? ???? ?? ?? ???? ???? ?? ?????? ???? ???