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BDS2 Oral Biology > Intro to tooth morphology > Flashcards

Intro to tooth morphology Flashcards

1
Q

Name structures A-E

A

A = apex
B= root
C = cervical line / cementum enamel junction (CEJ)
D = crown
E = incisal edge

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2
Q

Name structures A-E

A

ALVEOLAR BONE
PULP
DENTINE
CEJ
ENAMEL

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3
Q

What is the anatomical crown vs clinical crown?

A

anatomical crown - technically where the crown is

clinical crown is what you can see upon examination (it may be smaller or larger than the anatomical crown)

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4
Q

What is labial surface?

A

Anterior teeth: Labial surface (the surface towards the lips)

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5
Q

What is a buccal surface?

A

Posterior teeth: Buccal surface (the surface facing the cheeks)

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6
Q

What is palatal?

A

Towards or adjacent to the palate (maxillary teeth)

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7
Q

What is lingual?

A

Towards or adjacent to the tongue (mandibular teeth)

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8
Q

What is a proximal surface?

A

The area between adjacent tooth surfaces is called interproximal space

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9
Q

What are the 2 types of proximal surfaces?

A

mesial - towards midline
distal - away from midline

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10
Q

What 2 teeth don’t have a mesial surface?

A

the 1s

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11
Q

Describe the mesial surface?

A

Mesial points towards the midline.

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12
Q

Describe the distal surface

A

Distal points away from the midline.

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13
Q

What are the 2 biting surfaces of teeth?

A

incisal or occlusal

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14
Q

Describe incisal surfaces

A

the surfaces of the incisors or canines that contact with the opposing jaw.

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15
Q

Describe the occlusal surfaces

A

surfaces of the premolars or molars that contact with the opposing jaw.

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16
Q

Describe the 3 sections of a root

A

cervical
middle
apical

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17
Q

Name the 3 thirds of the crown of a molar tooth (top to bottom)

A

occlusal
middle
cervical

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18
Q

Name the 3 thirds of an incisor tooth

A

incisal
middle
cervical

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19
Q

What is the cusp of a tooth?

A

Elevation of the crown portion of a tooth making up a divisional part of the occlusal surface.

20
Q

What is the ridge of a tooth?

A

linear elevation on the surface of a
tooth.

21
Q

What is the marginal ridge?

A

rounded borders of the enamels that form the proximal margins of the occlusal surfaces of premolars and molars and the proximal margins of the anterior teeth.

22
Q

What tooth surface is this?

A

marginal ridge

23
Q

What tooth surface is this?

A

cusps

24
Q

What tooth surface is this?

A

ridge

25
Q

What is a triangular ridge?

A

descend from the tips of the cusp of posterior teeth towards the central part of the occlusal surfaces. They are named after the cusps to which they belong

26
Q

Which tooth has 5 cusps?

A

Lower first molar

16 26 (FDI)

27
Q

What is a transverse ridge?

A

the raised surface connecting two triangular ridges crossing transversely the surface of a posterior tooth.

28
Q

What tooth surface is this?

A

transverse ridge

29
Q

What is an oblique ridge?

A

Raised tooth surface, crossing obliquely (crossing) the occlusal surfaces of maxillary molars. Example U6 oblique ridge formed by the union of the DB cusp and the MP cusp.

30
Q

What tooth surface is this?

A

oblique

31
Q

What is a tubercle?

A

is a smaller elevation on some portion of the crown produced by an extra formation of enamel (deviations form the typical form).

32
Q

What tooth surface is this an example of?

A

tubercle

33
Q

What is the lobe surface of a tooth?

A

Primary sections of formation in the development of the crown.

34
Q

What is a cingulum (CI) tooth surface?

A

Lingual lobe of an anterior tooth. It makes up the bulk of the cervical third of the lingual/palatal surfaces.

35
Q

What is a mamelon surface of a tooth?

A

Any one of the three rounded protuberances found on the incisal ridges of newly erupted incisor teeth.

36
Q

What is this an example of?

A

mamelons

37
Q

What is a fossa?

A

Irregular depression or concavity.

38
Q

What is a lingual fossa?

A

Lingual surfaces of incisors.

39
Q

What is a central fossa?

A

occlusal surface of
molars. Formed by the convergence of ridges

40
Q

What is the circle showing?

A

central fossa

41
Q

What is a triangular fossa?

A

found on occlusal surfaces of posterior teeth mesial or distal to marginal ridges. Sometimes on palatal surfaces of maxillary incisors at the edge of the lingual fossae where the marginal ridge (MR) and the cingulum (CI) meet.

42
Q

What is the triangle showing here?

A

triangular fossa

43
Q

What is a supplemental groove?

A

shallow linear depression on the surface of a tooth
(Supplemental to a developmental groove and does not mark the junction of primary parts).

44
Q

What is a developmental groove?

A

shallow groove or line between the primary parts of the crown or root.

should have 4 on molars

45
Q

What is a sulcus?

A

: long depression in the surface of a tooth between ridges and cusps, the inclines of
which meet at an angle. A sulcus has a developmental groove at the junction of its inclines.

46
Q

What is a pit?

A

small pinpoint depression located at the junction of developmental grooves or at terminals of those grooves.

47
Q
A

BDS2 Oral Biology (27 decks)

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