Doran G A
Aust Dent J. 1977 Oct;22(5):389-92. doi: 10.1111/j.1834-7819.1977.tb05127.x.
The prevalence of shovel-shaped and lingual tubercles in maxillary incisors and canines in four groups of people in Papua New Guinea is reported. The shovel shape was not common among the people of Highland New Guinea but its presence in Papuans was comparable with that in Mongoloid races.
报告了巴布亚新几内亚四组人群上颌切牙和尖牙中铲形和舌侧结节的发生率。铲形在新几内亚高地人群中并不常见,但在巴布亚人中的出现率与蒙古人种相当。