106 Oral Facial Anatomy Flashcards

1
Q

What is the Oral Cavity?

A

The upper end and the beginning of the digestive system.

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2
Q

Where does the oral cavity begin and end?

A
  • Begins at the lips and cheeks

- Ends at the palatine tonsils

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3
Q

What is the Vestibule?

A

The space or potential space that exists between the lips or cheeks and the teeth.

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4
Q

What is the Oral Cavity Proper?

A

The area surrounded by the teeth or the alveolar ridges back to the palatine tonsils.

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5
Q

What two sections if the Oral Cavity comprised of?

A
  1. The Vestibule

2. The Oral Cavity Proper

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6
Q

Where is the Vermilion Zone?

A

Red part of the lip where the mucosa meets skin.

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7
Q

Where is the Philtrum?

A

Small depression at the midline of the upper lip.

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8
Q

What is a frenum?

A

A piece of connective tissue that restrains the movement of a muscle, tongue, or lip.

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9
Q

Where can Labial Frenum be located?

A

At the midline in both the upper and lower lips.

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10
Q

What are Fordyce Granules?

A

Misplaced sebaceous glans in the lips, cheek or retromolar pad.

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11
Q

What is the Cortical Plate?

A

A dense bone on the buccal and lingual surfaces of the alveolar bone.

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12
Q

What are Exostoses? Where are they more commonly found?

A

Small extra growths of bone on a bone surface. Generally scene more on the mandible then on the maxilla.

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13
Q

What are Rugae?

A

Small ridges of connective tissue extending laterally across the anterior of the hard palate.

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14
Q

What is the Incisive Papilla?

A

Small, rounded, oblong, mound of tissue directly behind the maxilarry central incisors laying over the Incisive Foramen.

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15
Q

Where is the Incisive Foramen?

A

Located directly behind the Incisive Papilla

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16
Q

What are Maxillary Torus Palatinus?

A

Large bony growths in the maxillary hard palate.

17
Q

Where is the Sublingual Caruncle? What is it’s function?

A
  • On each side of the lingual frenum
  • Opening for the ducts of two of the major salivary
    glands (the submandibluar and sublingual salivary
    glands)
18
Q

What is the Anatomical Crown of a tooth?

A

The part of the tooth that is covered in enamel.

19
Q

What is the Clinical Crown of the tooth?

A

The part of the tooth scene above the gingiva.

20
Q

What does CJE stand for and where is it located?

A
  • Cementoenamel Junction

- Located where the crown and root of a tooth join

21
Q

What is the Alveolar Process?

A

The portion of the jaw that supports the teeth.

22
Q

What is the Alveolus?

A

The bony socket in the alveolar process in which a tooth fits.

23
Q

What are the 4 tissues that a tooth is comprised of?

A
  1. Enamel
  2. Dentin
  3. Cementum
  4. Dental Pulp
24
Q

Describe Enamel.

A
  • Forms the outer surface of the anatomic crown
  • It is the thickest over the tip of the crown and
    becomes
    thinner until it reaches the cervical line
  • Densely minerlized
  • Hardest body tissue
  • Is not capable of repairing itself or generating new
25
Q

Describe Dentin.

A
  • Forms the greatest bulk of the tooth
  • Located under the enamel and cementum
  • Is hard calcified tissue (softer then enamel harder than
    cementum)
  • Is capable of generating new tissue (secondary Dentin & tertiary dentin)
26
Q

Describe Cementum.

A
  • Covers the root
  • Attachment medium for the tooth to the bone
  • not as dense as enamel or dentin but harder then
    bone
  • Thicker at the apex of the root but thins as moves
    towards the cervix
  • Cementum supplied form outside the tooth from the
    bone
27
Q

Describe Dental Pulp

A
  • Center of the tooth
  • Contains blood vessels, lymph vessels, connective tissue, and odontoblasts
  • Nourishing, sensory and dentin reparation
  • Walls lined with odontoblasts for primary and secondary dentin
28
Q

What are the two types of cementum and how are they different?

A

Cellular
- covers the apical third of the root; with the thickest part
at the very apex to the root
- functions as a cushion for when the teeth impact
Acellular
- covers most of the anatomic root
- primarily functions as the attachment system of the
tooth

29
Q

What are the 4 types of teeth?

A
  1. Incisors
  2. Canines
  3. Premolars
  4. Molars
30
Q

Describe Incisors.

A
  • Anterior teeth
  • 4 maxillary and 4 mandibular
  • Designed to cut or incise
  • Lingual side is shaped like a shovel to aid in guiding
    food into mouth
31
Q

Describe Canines.

A
  • Anterior teeth
  • 2 maxillary and 2 mandibular
  • Holding/grasping teeth
  • Protects jaw joint during side to side movement
  • Long and thick for stress-bearing support
  • Best anchored; most stable
  • Roots shaped like a triangle in cross section
32
Q

Define Premolars.

A
  • Posterior teeth
  • 4 maxillary and 4 mandibular
  • 2 cusps
  • holding and grinding teeth
  • sometimes referred to as bicuspids but some are triucuspid
33
Q

Define Molars.

A
  • Posterior teeth
  • 6 maxillary and 6 mandibular
  • Larger than premolars with 4 or more cusps
  • Masticate food
34
Q

How many surfaces do teeth have?

A

5