50 bytes removed ,  23:53, 26 March 2011
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Text replace - "[[Root - Anatomy & Physiology|" to "[[Enamel Organ#Root|"
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9. Neighbouring cells in the dental papillae (from neural crest cells) differentiate into [[Odontoblasts - Anatomy & Physiology|odontoblasts]].
 
9. Neighbouring cells in the dental papillae (from neural crest cells) differentiate into [[Odontoblasts - Anatomy & Physiology|odontoblasts]].
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10. Dentine surrounds [[Pulp - Anatomy & Physiology|pulp]] to produce the [[Root - Anatomy & Physiology|root]] of the tooth.
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10. Dentine surrounds [[Pulp - Anatomy & Physiology|pulp]] to produce the [[Enamel Organ#Root|root]] of the tooth.
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11. Epithelial cells near the distal tooth form [[Cementoblasts - Anatomy & Physiology|cementoblasts]], secreting [[Cementum - Anatomy & Physiology|cementum]] around the tooth [[Root - Anatomy & Physiology|root]].
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11. Epithelial cells near the distal tooth form [[Cementoblasts - Anatomy & Physiology|cementoblasts]], secreting [[Cementum - Anatomy & Physiology|cementum]] around the tooth [[Enamel Organ#Root|root]].
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There is a reciprocal inductive interaction between the oral epithelium and mesenchyme precursors. The mesenchyme forms the tooth, it has labile differentiative properties but stable morphogenic properties. Tooth formation starts at the [[Enamel Organ#Crown|crown]] and progresses towards the [[Root - Anatomy & Physiology|root]]. The tooth does not acquire full length until the crown has emerged. Tooth growth is appositional.
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There is a reciprocal inductive interaction between the oral epithelium and mesenchyme precursors. The mesenchyme forms the tooth, it has labile differentiative properties but stable morphogenic properties. Tooth formation starts at the [[Enamel Organ#Crown|crown]] and progresses towards the [[Enamel Organ#Root|root]]. The tooth does not acquire full length until the crown has emerged. Tooth growth is appositional.
    
==Eruption==
 
==Eruption==
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===Deciduous Tooth===
 
===Deciduous Tooth===
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Eruption occurs after the [[Enamel Organ#Crown|crown]] has fully formed (prior to complete [[Root - Anatomy & Physiology|root]] formation). It provides the space required for [[Root - Anatomy & Physiology|root]] completion. The epithelial covering is continuous with gums after eruption. Erosion (wear) removes the epithelium. The 'toothless' gene stops eruption.
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Eruption occurs after the [[Enamel Organ#Crown|crown]] has fully formed (prior to complete [[Enamel Organ#Root|root]] formation). It provides the space required for [[Enamel Organ#Root|root]] completion. The epithelial covering is continuous with gums after eruption. Erosion (wear) removes the epithelium. The 'toothless' gene stops eruption.
    
[[Image:Tooth Radiograph.jpg|thumb|right|250px|Tooth Radiograph - Copyright Nottingham 2008]]
 
[[Image:Tooth Radiograph.jpg|thumb|right|250px|Tooth Radiograph - Copyright Nottingham 2008]]
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