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Oral Anatomy > Lecture V - Physiologic Forms and Anatomical Landmarks > Flashcards

Lecture V - Physiologic Forms and Anatomical Landmarks Flashcards

1
Q

What are the five surfaces of the teeth?

a. Anterior Teeth
b. Posterior Teeth

A

a. Anterior
1. Labial surface
2. Mesial Surface
3. Distal Surface
4. Lingual Surface
5. Incisal Surface

b. Posterior Teeth
1. Labial Surface
2. Mesial Surface
3. Distal Surface
4. Lingual/palatal Surface
5. Occlusal Surface

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2
Q
  • the surfaces towards the lips

- incisors and canines

A

Labial Surfaces

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3
Q
  • those facing the cheeks

- premolars and molars

A

Buccal Surfaces

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4
Q

labial and buccal surfaces are known as

A

Facial Surfaces

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5
Q

the cutting or chewing surfaces of hte tooth

A

Occlusal Surfaces

posterior

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6
Q

the narrow cutting surface of the anterior teeth

A

Incisal Surface

anterior

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7
Q

all surfaces toward the tongue

A

Lingual Surfaces

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8
Q

the surfaces of the teeth facing toward adjoining teeth in the same dental arch are called

A

Proximal Surfaces

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9
Q

the surface of the tooth nearest to the midline

A

Mesial Surface

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10
Q

the surface away from the median line

A

Distal Surface

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11
Q

four teeth have mesial surfaces that contact each other;

A

maxillary and mandibular central incisors

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12
Q

the distal surfaces of __________ and _______ do not contact with any surface as there are no teeth distal to them

A

permanent 3rd molar and deciduous 2nd molar

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13
Q

The crown may be divided into thirds in three directions:

A
  1. Mesiodistally
  2. Faciolingually: Labiolingual (anterior); buccolingual (posterior)
  3. Cervicoincisally (anterior) / Cervico-occlusally (posterior)
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14
Q

Mesiodistally, the crown is divded into:

A
  1. Mesial third
  2. Middle Third
  3. Distal Third
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15
Q

Cevicoincisally / Cervico-occlusally, the crown is divided into:

A
  1. Incisal (anterior) or occlusal (posterior) third
  2. Middle Third
  3. Cervical Third
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16
Q

Faciolingually, the crown is divided into:

A
  1. Labial (anterior) or Buccal (posterior) Third
  2. Middle Third
  3. Lingual Third
17
Q

Cervico-apically, the root can be divided into:

A
  1. Cervical Third
  2. Middle Third
  3. Apical Third
18
Q

when two surfaces of a tooth meet, a ____ is formed

A

line angle

19
Q

when three surfaces surfaces meet a __________ is formed

A

point angle

20
Q

the Anterior line angles include:

A
  1. Labioincisal
  2. Mesiolingual
  3. Mesiolabial
  4. Linguoincisa
  5. Distolingual
  6. Distolabial
21
Q

the Posterior line angles include:

A
  1. Mesio-occlusal line angle
  2. Mesiobuccal line angle
  3. Bucco-occlusal line angle
  4. Mesiolingual line angle
  5. Linguo-occlusal line angle
  6. Distolingual line angle
  7. Disto-occlusal line angle
  8. Distobuccal line angle
22
Q

Point angles of the anterior teeth:

A

a. Mesiolabioincisal
b. Distolabioincisal
c. Mesiolinguoincisal
d. Distolinguoincisal

23
Q

Point angles of the posterior teeth:

A

a. Mesiolinguo-occlusal
b. Mesiobucco-occlusal
c. Distobucco-oclcusal
d. Distolinguo-occlusal

24
Q

_______ is a carved-out section or area, like a cave

_______ - bulging out; curve outward

A

a. Concavity

b. Convexity

25
Q

what are the elevations on teeth

A
  1. cusp
  2. tubercle
  3. cingulum
  4. lobes and mamelons
  5. Ridge
26
Q

Types of ridge:

A
  1. Incisal ridge (only in anteriors)
  2. Marginal ridges
  3. Mesial and Distal Cusp ridges
  4. Buccal and Lingual Cusp ridges
  5. Triangular ridges of the cusp
  6. Oblique ridge
  7. Transverse ridge
27
Q

Depressions on teeth

A
  1. Fossa
  2. Grooves
  3. Pits
28
Q

Types of Fossa;

A

a. Lingual Fossa (only on anteriors)
b. Central Fossa (posterior)
c. Triangular Fossa (posterior)

29
Q

Types of Grooves:

A

a. Developmental Groove

b. Supplemental Groove

30
Q

an elevation or mound on the crown portion of a tooth making up a divisional part of the occlusal surface
-present in the posterior teeth and the canines

A

Cusps

31
Q

all cusps have a basic shape of gothic pyramid, having four ridges namely:

A

a. Mesial Cusp ridge
b. Distal Cusp ridge
c. Buccal cusp ridge (labial ridge on canines)
d. Triangular ridge on posterior teeth (Lingual Ridge on canines)

32
Q

____ do not possess cusps

A

Incisors

33
Q

Canines exhibit _____ cusp/s

A

one

34
Q

Premolars have ______ cusp/s

A

2 or 3

35
Q

Molars have ______ cusps

A

4 or more

36
Q

a smaller elevation on some portion of the crown produced by an extra formation of enamel

A

Tubercle

37
Q

usually deviations from the normal form

- ex. cusp of Carabelli

A

Tubercle

38
Q

fifth cusp present in teh palatal surface of the maxillary first molars

A

the cusp of Carabelli

Oral Anatomy (9 decks)

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