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Tooth - Anatomy & Physiology (view source)
Revision as of 00:18, 27 March 2011
, 00:18, 27 March 2011→Periodontal Ligament
==Main Cells==
[[Image:Ameloblast Histology.jpg|thumb|right|150px|Ameloblast Histology - Copywright RVC 2008]]
===Ameloblasts===
'''Ameloblasts''' are cells in the enamel organ which forms the tooth. They secrete '''[[Enamel Organ#Enamel|enamel]]'''.
Epithelial cells line the inner surface of the enamel organ. '''Ameloblasts''' are derived from epithelium and form a single layer of very long columnar cells that are hexagonal in cross section. They have elongated, basally sited nuclei. They synthesise '''[[Enamel Organ#Enamel|enamel]]''' which forms the '''[[Enamel Organ#Crown|crown]]''' of each tooth. They maintain connections with the newly synthesised '''[[Enamel Organ#Enamel|enamel]]''' through cellular projections called '''Thomes' fibres'''.
'''[[Enamel Organ#Enamel|Enamel]]''' is acellular so once the connection with the ameloblasts via the '''Thomes' fibres''' is lost (upon eruption), the [[Enamel Organ#Enamel|enamel]] matrix cannot be remodelled.
*'''[[Odontoblasts - Anatomy & Physiology|Odontoblasts]]'''
*'''[[Odontoblasts - Anatomy & Physiology|Odontoblasts]]'''
*'''[[Cementoblasts - Anatomy & Physiology|Cementoblasts]]'''
*'''[[Cementoblasts - Anatomy & Physiology|Cementoblasts]]'''