maxillary lateral incisors

Based on the meta-analysis by Hua, et al., in 2013,1 the prevalence of peg-shaped maxillary permanent lateral incisors (Figures 1A, 1B, 1C, and 2) varies by race, population type, and gender. Overall, the prevalence of peg-shaped maxillary permanent lateral incisors is 1.8%. It is highest in the Mongoloid (3.4%) race. The prevalence in an orthodontic population is 2.7%. Women are 1.35 times more likely than men to have peg-shaped maxillary lateral incisors. Although the prevalence is the same for unilateral and bilateral peg-shaped lateral incisors, the left side is twice as common as the right side.1