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HM Study Material > HM Chapter 07: Oral Anatomy and Physiology > Flashcards

HM Chapter 07: Oral Anatomy and Physiology Flashcards

1
Q

When do first teeth (baby teeth) form?

A
  • Occurs between 5th and 6th week of prenatal life

- Occurs in 3 stages: BUD stage, CAP stage (proliferation), BELL stage (histodifferentiation)

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2
Q

Ameleoblast

A

Enamel forming cells

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3
Q

Odontoblast

A

Dentin forming cells

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4
Q

Apposition

A

Depositing of the matrix for the hard surface

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5
Q

Calcification

A

Process of organic tissue becoming hardened, builds in layers

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6
Q

Eruption

A

When tooth comes into proper position

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7
Q

Exfoliation

A

When the root reabsorbs and the tooth falls out

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8
Q

Crown

A
  • Anatomic crown: Encased in enamel

- Clinical crown: Part exposed in the mouth

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9
Q

Root

A

-Covered in cementum; Separation called furcation (2 separations called bifurcation)

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10
Q

Enamel

A
  • Translucent, calcified substance that covers the anatomical crown and protects the dentin
  • Hardest tissue in the body, can endure 100,000 psi
  • 96% inorganic minerals, 1% organic mineral, 3% water
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11
Q

Dentin

A
  • Largest portion of the tooth, yellow in coloration

- 70% inorganic matter, 30% organic matter and water

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12
Q

Cementum

A

-Covers the roots, anchors teeth to tooth sockets

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13
Q

Dental pulp

A

-Where the formation of dentin is

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14
Q

Periodontium

A

-Tissue that surround and support the teeth collectively

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15
Q

Masticatory tissue

A
  • Tissue that covers the hard palate and gingival

- It is keratinized

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16
Q

Hard palate structure

A

Incisive papilla, palatine raphe, palatine rugae

17
Q

Gingiva

A

-Specialized masticatory mucosa, firm and resistant
-Unattached gingiva
-Gingival margin, gingival sulcus, epithelial attachment,
interdental papillae

18
Q

Lining mucosa

A
  • Found on inside of lips, cheeks, vestibule and under the tongue
  • Thin and fragile
19
Q

What is the chief function of pulp?

A

The formation of dentin. It furnishes nourishment
to the dentin; provides sensation to the tooth; and responds to irritation, either by forming reparative secondary dentin or by becoming inflamed.

20
Q

Oral mucosa consists of 3 types:

A 
Masticatory mucosa (hard palate), Lining Mucosa
(lips, cheeks), and Specialized Mucosa (tongue)
21
Q

The alveolar socket is…

A

The cavity within the alveolar process in which the root of the tooth is held by the periodontal ligament

22
Q

What is the unattached gingiva?

A

Portion of gingiva that extends from the gingival crest to the crest of the bone

23
Q

What does interdental papilla do?

A

Helps prevent food from packing between the teeth

24
Q

What are the second molars called?

A

The second molars are often canned the 12-year molars because they erupt when a child is about 12-years old

25
Q

How man proximal surfaces foes a tooth have?

A

2

26
Q

How many quadrants does the mouth have?

A

4

27
Q

What does each quadrant contains?

A

Central incisor, lateral incisor, cuspid, 1st bicuspid,

2nd bicuspid, 1st, 2nd, and 3rd molar

28
Q

What is the universal numbering system?

A

Teeth are numbered from right maxillary 3rd molar (#1) to

right mandibular 3rd molar (#2)

29
Q

How is the primary numbering system used?

A

Teeth are labeled A-T

30
Q

What are the surfaces of the tooth?

A
  • Facial surface: Towards the lips or cheek
  • Mesial surface: Proximal surface closest to the midline of the arch
  • Distal surface: Orientated away from midline of the arch
  • Lingual surface: Faces towards the tongue
  • Embrasure: Interproximal space that isn’t occupied
  • Diastema: Interproximal space with no contact point
31
Q

Vertical overlap

A

Extension of maxillary teeth over mandibular counterparts (overbite)

32
Q

Curve of Spee

A

Slight curved plane of the lower teeth

33
Q

Curve of Wilson

A

Concave curve of the mandibular arch

34
Q

Occlusional plane

A

Combination of the Curve of Wilson and the Curve of Spee

35
Q

Dental Angle Class I

A

Normal

36
Q

Dental Angle Class II

A

Retrognathic (overbite)

37
Q

Dental Angle Class III

A

Prognathic (underbite)

HM Study Material (19 decks)

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