Dentinoenamel junction

Not to be confused with dermoepidermal junction.

The dentinoenamel junction or dentin-enamel junction (DEJ) is the boundary between the enamel and the underlying dentin that form the solid architecture of a tooth.[1]

It is also known as the amelo-dentinal junction, or ADJ.[2]

The dentinoenamel junction is thought to be of a scalloped structure which has occurred as an exaptation of the epithelial folding that is undergone during ontogeny. This scalloped exaptation has then provided stress relief during mastication and a reduction in dentin-enamel sliding and has thus, not been selected against, making it an accidental adaptation.

  1. ^ Nanci, Antonio; TenCate, Arnold Richard (2008). Ten Cate's oral histology: development, structure, and function (7th ed.). St. Louis, Mo.: Mosby/Elsevier. ISBN 978-0-323-04557-5.
  2. ^ Mahoney, Erin; Ismail, F. Shaira M.; Kilpatrick, Nicky; Swain, Michael (December 2004). "Mechanical properties across hypomineralized/hypoplastic enamel of first permanent molar teeth". European Journal of Oral Sciences. 112 (6): 497–502. doi:10.1111/j.1600-0722.2004.00162.x. ISSN 0909-8836. PMID 15560832.
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