Vertical wrinkles of upper lip in CD patient is might be result of?: (A) Lack of proper lip support, (B) Lack of lip fullness, (C) Maxillary anterior teeth set labially, (D) Any of above
Answer is A. Proper lip support leads to normal lip appearance so Lack of proper lip support due to absence of anterior teeth or too far palatally placed anterior leads to appearance of vertical wrinkles on lip.