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Copyright 1988, 1989, 1997, 1998, 2006
Synonyms of Amelogenesis Imperfecta
Disorder Subdivisions
- Hypocalcified AI (Type III)
- Hypomaturation AI (Type II)
- Hypomaturation/Hypoplasia/Taurodontism (Type IV)
- Hypoplastic AI (Type I)
General Discussion
Amelogenesis imperfecta (AI) refers to a group of rare, inherited disorders characterized by abnormal enamel formation. The term is restricted to those disorders of enamel development not associated with other defects of the body. In AI, the layer of enamel is thin so that the teeth appear to be discolored, showing the color of the materials under the enamel. The teeth usually appear brown or some variant of that color.
Clinical researchers usually classify AI into four main types of which 14 subtypes are recognized. The main types are based on enamel effects and the subtypes are based on clinical appearance and mode of inheritance. The main types are: hypoplastic (Type 1); hypomaturation (Type II); hypocalcified (Type III); and,
hypomaturation/hypoplasia/taurodontism (Type IV). Amelogenesis imperfecta may be inherited as an X-linked, autosomal dominant, or autosomal recessive genetic trait, depending on the type.
Organizations related to Amelogenesis Imperfecta
- Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg MD 20898-8126
Phone #: 301-251-4925
800 #: 888-205-2311
e-mail: http://rarediseases.info.nih.gov/GARD/EmailForm.aspx
Home page: http://rarediseases.info.nih.gov/GARD
- MUMS National Parent-to-Parent Network
150 Custer Court
Green Bay WI 54301-1243
Phone #: 920-336-5333
800 #: 877-336-5333
e-mail: mums@netnet.net
Home page: http://www.netnet.net/mums/
- NIH/National Oral Health Information Clearinghouse
1 NOHIC Way
Bethesda MD 20892-3500
Phone #: 301-402-7364
800 #: --
e-mail: nohic@nidcr.nih.gov
Home page: http://www.nohic.nidcr.nih.gov
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