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Difference between revisions of "Tooth"

 
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The tooth is embedded in the jaw bones with its root and protrudes into the oral cavity with its crown.
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'''''German''': [[:de:Zahn|Zahn]]''
Its function is biting and grinding food, as a first step of digestion.
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== Definition ==
Humans do have two dentitions with different, specialised teeth.
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The '''tooth''' is a calcified structure which is embedded in the jaw bones with its roots and protrudes into the oral cavity with its crown. Its function is biting and grinding food, as a first step of [[digestion]]. Humans possess two dentitions with different, specialised teeth.
  
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==The two dentitions==
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===Permanent teeth===
  
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28 teeth (+ 4 [[wisdom tooth|wisdom teeth]]) consisting of:
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* 8 anterior teeth (Incisivi)
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* 4 [[canine]]s (Canini)
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* 8 [[premolar]]s (Bicuspids)
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* 8 [[molar]]s (Multicuspids)
  
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=== Primary teeth (milk teeth)===
  
'''1. The two dentitions:'''
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20 teeth consisting of:
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* 8 anterior teeth
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* 4 canines
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* 8 molars
  
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== Macroscopic structure ==
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=== Crown ===
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The crown is built up of [[enamel]] and [[dentin]]. The dentin is covered by the enamel (crown-dentin).
  
'''1.1 Permanent teeth:'''
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=== Root ===
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The root mainly consists of dentin, covered with [[cementum]] (root-dentin). The crown and the root are separated through the neck of the tooth.
  
28 teeth (+ 4 wisdom teeth) consisting of:
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=== Pulp chamber ===
8 Anterior teeth
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The [[pulp chamber]] is covered by dentin and contains the [[pulp]], a soft tissue built up of [[vessel]]s and [[nerve]]s. The pulp is separated into the crown-pulp and the root-pulp by the cervical region. On the root-tip there is a little opening, the so called [[apical foramen]].
4 Canines
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8 Premolars (Bicuspids)
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8 Molars
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'''1.2 Primary teeth (milk teeth)'''
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[[de:Zahn]]
 
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[[Tag:Dentistry]]
20 teeth consisting of
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[[Tag:Teeth]]
8 Anterior teeth
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[[Tag:Tooth]]
4 Canines
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8 Molars
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'''2. Macroscopic structure'''
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'''2.1 Crown'''
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The crown is built up of enamel and dentin. The dentin is covered by the enamel (crown-dentin)
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'''2.2 Root'''
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The root mainly consists of dentin, covered with cementum (root-dentin)
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The crown and the root are separated through the neck of the tooth
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'''2.3 Pulp chamber'''
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The Pulp chamber is covered by dentin and contains the pulp, a soft tissue built up of vessels and nerves.
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The pulp separated into the crown-pulp and the root-pulp by the cervical region
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On the root-tip there is a little opening, the so called apical foramen.
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Latest revision as of 16:29, 31 May 2016

German: Zahn

1 Definition

The tooth is a calcified structure which is embedded in the jaw bones with its roots and protrudes into the oral cavity with its crown. Its function is biting and grinding food, as a first step of digestion. Humans possess two dentitions with different, specialised teeth.

2 The two dentitions

2.1 Permanent teeth

28 teeth (+ 4 wisdom teeth) consisting of:

2.2 Primary teeth (milk teeth)

20 teeth consisting of:

  • 8 anterior teeth
  • 4 canines
  • 8 molars

3 Macroscopic structure

3.1 Crown

The crown is built up of enamel and dentin. The dentin is covered by the enamel (crown-dentin).

3.2 Root

The root mainly consists of dentin, covered with cementum (root-dentin). The crown and the root are separated through the neck of the tooth.

3.3 Pulp chamber

The pulp chamber is covered by dentin and contains the pulp, a soft tissue built up of vessels and nerves. The pulp is separated into the crown-pulp and the root-pulp by the cervical region. On the root-tip there is a little opening, the so called apical foramen.

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