Efstratiadis S S, Kent R L, Lebret L M, Moorrees C F
Angle Orthod. 1984 Oct;54(4):271-82. doi: 10.1043/0003-3219(1984)054<0271:SPOMTM>2.0.CO;2.
Measurement of anterior and medial inclinations of third molars from 10 to 18 years of age in monozygotic twins finds a consistent pattern of uprighting, with high correlations within twin pairs indicative of strong genetic influence.
对10至18岁同卵双胞胎第三磨牙的前倾和内倾测量发现了一种一致的直立模式，双胞胎对之间的高相关性表明存在强大的遗传影响。
