Figure 2: Points. and measurements in methods for evaluating symmetry in adults. IN: incisor; C: canine; M: molar. (a): from the incisal point to the canine cusp tip; (b): linear distance from the canine cusp tip to the distobuccal cusp tip of the first permanent molar; (c): linear distance from the incisal point to the distobuccal cusp tip of the first permanent molar (Method 1). I: incisor; C: right canine; C’: left canine; M: right molar; M’: left molar. (a): from the cusp tip of the right canine to the distobuccal cusp tip of the first permanent right molar; (b): from the distobuccal cusp tip of the right permanent first molar to the left canine cusp tip; (c): from the cusp tip of the right canine to the distobuccal cusp tip of the left permanent first molar; (d): from the cusp tip of the left canine to the distobuccal cusp tip of the left permanent first molar (Method 2).