2Kronfeld R, Boyle PE. Histopathology of the teeth and their sur- rounding structures [ M ]. Philadelphia : Lea & Febiger, 1955 : 14.
3Shafer WG. A textbook of oral pathology [ M ]. Philadelphia: Saun- ders, 1958:26.
4Ufomata D. Mierodontia of a mandibular second premolar[ J]. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 1988,65 (5) :637- 638.
5Opinya GN, Kaimenyi JT, Meme JS. Oral findings in Fanconi' s a- nemia: a case report[J]. J Periodontal Res, 1988,59 (7):461- 463.
6Bargale SD, Kiran SDP. Non-syndromie occurrence of true general- ized microdontia with mandibular mesiodens-a rare ease[ J]. Head dr face medicine, 2011,7 ( 1 ) : 19.
7Reddy SS, Shwetha V, Chauhan P, et al. Cornelia de Lange syn- drome[ J]. Indian J Endocrinol Metab, 2013,17 (4):763.
8Osborn JW, Ten Cate AR. Advanced dental histology: dental prac- titioner[ M]. 3rd ed. Bristol: John Wright & Sons, 1976:24-51.
9Larmour CJ, Mossey PA, Thind BS, et al. Hypodonhia--a retro- spective review of prevalence and etiology. Part I [ J ]. Quintessence Int, 2005,36(4) :263-270.
10Peck S, Peck L, Kataja M. Prevalence of tooth agenesis and peg- shaped maxillary lateral incisor associated with palatally displaced canine (PDC) anomaly [ J ]. Am J Orthod Dentofac, 1996, 110 (4) :441-443.
