Dental Morphology
Terms
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- What does each arch include?
- the teeth, the gingival, and the underlying bone
- Which arch moves?
- the Mandibular arch (lower jaw)
- In which bone are the teeth anchored?
- alveolar bone
- How many permanent teeth?
- 32
- Teeth are classified by...
- shape and function
- How many incisors are there in each arch?
- 4
- How many permanent canines are there in each arch?
- 2
- How many premolars are there in each arch? permanent molars?
-
4 premolars
6 molars - What is the dental formula for the permament dentition in humans?
- I 2/2 C 1/1 P 2/2 M 3/3 = 16
- What does this mean...I 2/2
- I: Incisors 2 maxillary/ 2 mandibular
- What are the anterior teeth?
- incisors and canines
- What are the posterior teeth?
- premolars and molars
-
How many deciduous teeth?
incisors?
canines?
molars? -
20
4 incisors
2 canines
4 molars - What are the incisors used for?
- cutting food (thin biting edges, incisal edges)
-
What do the canines do?
What are the especially important for? -
tear, pierce, and hold food
guiding the mvmt of the mandible - There are no ___or___ in primary dentition.
- premolars or 3rd molars
- What is the root covered with?
- cementum
- What is enamel?
- the dense hydroxyapatite surface of the crown
- What is dentin?
- the inner hard layer of the crown and root
- What is the pulp?
- the vascular, innervated portion of the tooth
- What is the cervial line?
- the junction of the anatomical crown and root
- What is facial/buccal/labial?
- toward the lips and cheeks
- What is occlusal?
- the biting or chewing surface of the posterior teeth, the surface of the posterior tooth which is in contact with the opposing tooth
- What are functional cusps/supporting cusps?
- lingual cusps on maxillary posterior teeth
- On maxillary teeth, buccal cusps are referred to as...
- non functional cusps
- On mandibular teeth, the buccal cusps are ...
- functional cusps
- On mandibular teeth, the lingual cusps are ...
- non-functional
- What is the cingulum?
- On the Anterior teeth - the lingual crown projection (bump along gum line)
- What is the groove?
- On the Anterior teeth - line between the primary parts of the crown or rooth
- What is the pit?
- Anterior Teeth - pinpoint depression at the junction or termination of a groove
- What is the lobe?
- Anterior Teeth - the primary center of development within a tooth
- What is the mamelon?
- the incisal remnant of incisor development (bumps that wear down)
- What is the line angle?
- the junction of two tooth surfaces
- What is the point angle?
- junction of three tooth surfaces
- What is furcation?
- Were rooth divides
- What is the root apex?
- the opening in the root for entrance of the pulp
- What is the periodontium?
- supporting tissues that surround the tooth
- What does the periodontium include?
- gingiva, cementum, periodontal ligament, alveolar bone
- What is the gingival margin?
- where crown of tooth and gingiva meet
- What is free gingiva?
- the most incisal unattached portion; surrounds tooth to form collar of tissue with a space/sulcus (it's loose)
- What does the free gingival groove do?
- separates attached gingiva from free gingiva
- What is not seen visually, but can be evaluated with periodontal probe?
- gingival sulcus
- What is the gingival sulcus?
- the space between tooth surface and narrow cervical collar of free gingiva
- What is the attached gingiva?
- a zone of gray-light-pink keratinized masticatory mucosa firmly bound to underlying bone; extends between free gingiva and alveolar mucosa
- What is the mucogingival juction?
- between attached gingiva and looser, alveolar mucosa
- What is alveolar mucosa?
- moveable, dark pink to red tissue apical to mucogingival line
- What is the periodontal ligament?
- surrounds tooth root and attaches tooth to alveolar bone (periodontal fibers)