Tay F, Pang A, Yuen S
ASDC J Dent Child. 1984 Jul-Aug;51(4):289-94.
Two hundred and four cases of unerupted maxillary anterior supernumerary teeth were found among Hong Kong school children between the ages of six to 9.5 years. The anomaly was prominent in the male with a sex ratio of 5.4:1. There was no significant difference in the distribution of unilateral and bilateral supernumerary teeth, between the two sexes. Most of the supernumeraries were located within the central incisor region. The inverted type was found to be associated with bodily displacement, median diastema and torsiversion, while the normally oriented ones were related to delayed eruption. The association of maxillary anterior supernumeraries with clinical symptoms was compared with studies on Caucasian populations, and guidelines were described for their early diagnosis.
在6至9.5岁的香港学童中发现了204例上颌前部多生牙未萌出的病例。这种异常在男性中更为突出，男女比例为5.4:1。两性之间单侧和双侧多生牙的分布没有显著差异。大多数多生牙位于中切牙区域。发现倒置型与牙体移位、正中牙间隙和扭转有关，而正常方向的多生牙则与萌出延迟有关。将上颌前部多生牙与临床症状的关联与白种人群的研究进行了比较，并描述了早期诊断的指导原则。
