Comparison of Soft Tissue Changes Produced by Two Different Appliances on Mixed Dentition Children

Figure 8

Pre- and posttreatment cephalometric tracing showing reference lines and measurements of Holdaway’s analysis. 1, Sella-Nasion (SN) line; 2, Frankfort horizontal (FH) plane; 3, H-line or harmony line; 4, hard tissue facial plane; 5, soft tissue facial line; 6, a line right angle to FH plane downtangent to the vermillion border of upper lip; a, soft-tissue facial angle; b, nose prominence; c, superior sulcus depth; d, subnasale to H-line; e, skeletal profile convexity; f, basic upper lip thickness; g, upper lip strain; h, H-line angle; i, lower lip to H-line; j, inferior sulcus to H-line; k, soft tissue chin thickness.