Intro to Morphology
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What are the three major functions of the Teeth and there definition ?
- Mastication -chewing
- Phonetics - speaking
- aesthetics - appearance
What is the function of the anterior teeth ?
What is the function of the posterior teeth ?
- Anterior Teeth = incising
- Posterior Teeth = grinding
Explain the concept of teeth form to function ?
- Teeth are formed to take the shape of the job they will be performing.
- Carnivores - tearing meat
- Herbivores - grinding vegetation
- Omnivores - Both Lateral and vertical chewing
Name the two arches and the quadrants represented by them ?
- Maxillary Arch - Right and Left Quadrant
- Mandibular Arch - Right and Left Quadrant
Name the Anterior Teeth and the Posterior Teeth ?
What is an alternate name for Canines?
What is an alternate name for Premolars?
- Anterior Teeth - Incisors and Canines (Cuspids)
- Posterior Teeth - Premolars (Bicuspids - sometimes three cusps Tricuspids) and Molars
Explain these tooth numbering systems ?
Universal (1-32 and A-T)
Federation Dentare Internationale
Palmer notation (quadrant/tooth)
- Universal numbers all teeth Right to Left and in a clockwise fashion.
- Universal for deciduous teeth - A-T
Federation Dentare = Quadrant and tooth number. Example - canines (13,23 ,33, 43)
Palmer Notation= It is a cross quadrant with the number 1-8
What is the Anatomical crown made of ?
What is the Anatomical root made of ?
What is the clinical crown ?
What is the clinical root ?
- Anatomical crown: enamel
- Anatomical root : cementum
The clinical portion is the portion you can see with the naked eye.
What is enamel ?
What is cementum ?
What is Dentin ?
Enamel - the hardest substance in the human body , but it is brittle .
Cementum - is the the surface layer of the tooth root
Dentin-Main component of the tooth
Draw the Dentoenameljunction (DEJ) ?
Draw the Cementoenameljunction (CEJ) aka cervical line ?
- where the Dentin and enamel meet.
- where the cementum and enamel meet.
Draw the pulp cavity -include the horns , canal , and chamber ?
What does the pulp consist of ?
Blood vessels and nerves.
Identify the following direction/surfaces
Facial - “outside” surface (aka buccal and labial)•Lingual - “inside” surface (aka palatal)•Mesial - toward midline•Distal - away from midline•Incisal and occlusal - top surfaceGingival (towards thegums; cervical)
What is Proximal vs Interproximal vs intraproximal ?
- Interproximal: between two adjacent teeth
- Proximal : distal or mesial
- intraproximal : inside
Draw the thirds on a maxillary Incisal tooth , facial and proximal view ?
- Top to Bottom
- Right to Left
What are the three functions of proximal contact areas ?
- –Aids in food
- flow pattern
Is the distal contact more cervical than the mesial contact ? T or F
What is the Height of Contour ?
- Height of contour (HOC) = greatest
- point of curvature of a crown
Which way does the Cervical line (CEJ) curve facing the lingual and facial aspects ? Which way does the cervical curve on the mesial and distal aspects?
Draw it ?
- Mesial and Distal = incisally /occlusally
- Facial and Lingual = apically
Where is the root usually the widest ?
How many roots do the Anterior teeth and Premolars possess ?
How many roots do the Posterior Teeth possess? if more than one where are they located.(ex. mesial , buccal ...)
It is widest at the Cervical point
Anterior and Premolars have -1 root
- Maxillary molars usually have- 3 roots
- 2 buccal and 1 palatal
- Mandibular molars have- 2 roots
- 1 mesial and one distal
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