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ORAL ANATOMY: PRELIMS > PRELIMS: CROWNS AND CONCAVITIES > Flashcards

PRELIMS: CROWNS AND CONCAVITIES Flashcards

1
Q

One of the primary anatomical divisions of the crown of a tooth

A

DENTAL LOBE

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2
Q

Small, rounded, projections of enamel from the incisal edges of newly erupted anterior tooth

A

MAMELONS

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3
Q

What are the cusp elevations?

A

~CUSP
~TUBERCLE
~CINGULUM
~RIDGES

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4
Q

Elevated and pointed projections of various size and shapes on the crowns of teeth
It forms the bulk of the occlusal surfaces of posterior teeth.

A

CUSPS

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5
Q

TRUE OR FALSE:

Incisors have cusps because of incisal edges

A

FALSE, INCISORS DO NOT HAVE CUSPS

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6
Q

How many cusps does a canine tooth have?

A

1 CUSP

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7
Q

How many cusp does a premolar tooth have?

A

2 TO 3 CUSPS

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8
Q

How many cusps does a molar have?

A

4 OR MORE CUSPS

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9
Q

Rounded or pointed projections found on the crown of tooth that varies in size and shape but are usually smaller than cusps, which is why they are sometimes called as minicusps.
They are usually located in the lingual surface of maxillary anterior teeth, especially deciduous canines

A

TUBERCLE

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10
Q

A type of tubercle that is a normal finding on the mesial part of the lingual surface of permanent maxillary first molars.

A

CUSP OF CARABELLI

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11
Q

A convex mount of enamel localized to the cervical 1/3 of the crown.
They are found on the lingual aspect of an anterior tooth

A

CINGULUM

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12
Q

Linear and usually convex elevations on the surface of the crowns of teeth

A

RIDGES

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13
Q

Types of ridges

A 
~MARGINAL RIDGE
~LINGUAL RIDGE
~TRIANGULAR RIDGE
~TRANSVERSE RIDGE
~OBLIQUE RIDGE
~CUSP RIDGES
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14
Q

A linear, rounded border of enamel that forms the mesial and distal margins of anterior teeth as viewed from the lingual, and the mesial and distal borders of occlusal surfaces on posterior teeth.

A

MARGINAL RIDGE

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15
Q

The ridge of enamel that extends from the cingulum to the cusp tip on the lingual surface of most cuspids

A

LINGUAL RIDGE

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16
Q

A linear ridge which descends from the tip of cusps on posterior teeth towards the central area of the occlusal surface.

A

TRINGULAR RIDGE

17
Q

The union of a buccal and a lingual triangular ridge that crosses the surface of a posterior tooth transversely

A

TRANSVERSE RIDGE

18
Q

A ridge that consists of a union between the triangular ridge of the distobuccal cusp and the distal cusps ridge of the mesiolingual cusp.
It crosses the occlusal surface obliquely

A

OBLIQUE RIDGE

19
Q

How many cusp ridges radiates from a tooth tip?

A

4 CUSP RIDGES

20
Q

How are cusp ridges named?

A

ACCORDING TOTHE DIRECTION THEY TAKE AWAY FROM THE CUSP TIP

21
Q

What are the types of cusp ridges?

A

~MESIAL
~DISTAL
~FACIAL
~LINGUAL

22
Q

What are the crown depressions?

A 
~FOSSA
~DEVELOPMENTAL GROOVE (PRIMARY)
~SUPPLEMENTARY GROOVE (SECONDARY)
~SULCUS
~FISSURES
~PITS
~CONTACT AREAS
23
Q

Irregularly, usually rounded depression

A

FOSSA

24
Q

Types of fossa

A

~LINGUAL FOSSA
~TRIANGULAR FOSSA
~CENTRAL FOSSA

25
Q

An irregular, rounded concavity bound by the mesial, marginal ridge, cingulum, and incisal edge of the lingual surface of an incisor tooth

A

LINGUAL FOSSA

26
Q

Fossa located adjacent to marginal ridges on the occlusal surfaces
of posterior teeth

A

TRIANGULAR FOSSA

27
Q

A centrally located depression or concavity found on the occlusal surface of molars and mandibular 2nd bicuspids

A

CENTRAL FOSSA

28
Q

A line that denotes the coalescence of the primary parts or lobes of the crown of a tooth cavity on the crown of a tooth.
The junction line between the inclined walls of sulcus
Represents lines of union between lobes of the crown during its formation
It appears on the labial, occlusal, buccal, and lingual surfaces, and are at least apparent on the labial aspect of anterior tooth

A

DEVELOPMENTAL GROOVE(PRIMARY)

29
Q

Branches from a developmental groove, and is not as deep as a primary groove
Minor, auxiliary groove that branches off from a much more prominent developmental groove

A

SUPPLEMENTARY GROOVE (SECONDARY)

30
Q

An elongated valley or depression in the surface of a tooth formed by the inclines of adjacent cusp or ridges

A

SULCUS

31
Q

A linear fault that sometimes occur in a developmental groove
It represents a lack of union between the inclined walls of sulcus

A

FISSURES

32
Q

Small, pinpoint fault on the surface of a tooth that is usually found at the end of developmental groove or at a place where 2 fissures intersect

A

Pits

33
Q

A miscellaneous structure that is an area on the proximal surface of the crown that contacts the adjacent tooth in the same dental arch, and is thus named mesial or distal by location

A

CONTACT AREA

34
Q

TRUE OR FALSE:

All teeth in each quadrant normally have 2 contact areas, except the most distal tooth which has no distal contact area

A

CONTACT AREA

ORAL ANATOMY: PRELIMS (4 decks)

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