The measurement points used in the study: 1, glabella (G); 2, nasion (N); 3, rhinion (Rhi); 4, subnasale (Sn); 5, labrale superius (Ls); ,6, stomion (Sto); 7, labrale inferius (Li); 8, labiomentale (Labm); 9, pogonion (Pog); and 10, gnathion (Gn). Points 1, 2, 3, 9, and 10 were perpendicular to FHP or to the bony surface. The remaining points were measured as follows: point; 4, the distance between point A and subnasale; 5, the distance between prosthion and labrale superious; 6, the shortest distance between the upper incisor and the attachment points of the upper and lower lip; 7, the distance between infradentale and the vermilion border of the lower lip; 8, the distance between point B and the deepest point of the labiomental crease. FHP, Frankfort horizontal plane.