Graber L W
J Am Dent Assoc. 1978 Feb;96(2):266-75. doi: 10.14219/jada.archive.1978.0054.
Congenital absence of teeth is a heritably phenomenon probably most often passed to each generation by an autosomal dominant pattern with incomplete penetrance and variable expressivity. Correlation of hypodontia with systemic disease leads to the hypothesis that this frequent dental anomaly may in some cases be a microform of systemic ectodermal dysplasia.
先天性缺牙是一种可能以常染色体显性模式遗传给每一代的遗传现象，其具有不完全外显率和可变表达性。牙发育不全与全身性疾病的相关性引发了这样一种假说，即在某些情况下，这种常见的牙齿异常可能是全身性外胚层发育不良的一种微小形式。
