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F16: Oral Anatomy > Tooth Anatomy > Flashcards

Tooth Anatomy Flashcards

1
Q

Distal proximal contacts are always more cervical than mesial contacts EXCEPT for which two teeth?

A

Mandibular central incisors: contacts at same height

Mandibular 1st premolars: mesial contact is more cervical than distal

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2
Q

For anterior teeth most contacts are in the incisal third EXCEPT what tooth?

A

The DISTAL contact of maxillary lateral incisors and canines are in the middle third

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3
Q

What happens to proximal contacts going from anterior to posterior?

A

The heights of contour move more towards the middle.

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4
Q

Which tooth has proximal contact in cervical third?

A

NONE!!

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5
Q

Faciolingually proximal contacts are where?

A

Anterior: middle third
Posterior: between buccal and middle third

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6
Q

T/F: Facial crest of curvature is always in the cervical third.

A

True

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7
Q

Where is the lingual crest of curvature for all anterior teeth?

A

Cervical third (cingulum)

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8
Q

Where is the lingual crest of curvature in posterior teeth?

A

Middle third

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9
Q

Which teeth are less likely to have root depressions?

A

Maxillary incisors

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10
Q

All canines, premolars, and mandibular incisors are likely to have deeper distal surface root depressions than mesial EXCEPT which tooth?

A

Maxillary first premolar

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11
Q

How do you tell how many pulp horns a tooth will have?

A

Functional cusps

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12
Q

Which tooth has a variable amount of pulp horns?

A

Maxillary lateral incisor (1-3)

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13
Q

How many pulp horns are typically on incisors?

A

3

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14
Q

Is the cusp of carabelli considered functional?

A

No

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15
Q

Nearly all teeth are made from 4 lobes EXCEPT for which tooth?

A

Mandibular 1st molar

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16
Q

Where is the distal contact on the maxillary lateral incisor?

A

In the middle third (due to large distal curvature of the tooth)

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17
Q

Where is the mesial contact on the maxillary canine?

A

At the junction of incisal and middle third

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18
Q

Of all anterior teeth, which two create the largest incisal embrasure?

A

Maxillary lateral incisor and maxillary canine

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19
Q

What is the largest cusp of a mandibular first molar?

A

Mesiobuccal cusp

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20
Q

Of maxillary posterior teeth, which crown is the longest?

A

Maxillary first premolar

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21
Q

What is the central fossa line?

A

The line running between posterior tooth cusps (follows central grooves)

22
Q

Which anterior tooth is most likely to have two root canals?

A

Mandibular canine

23
Q

Maxillary first premolar lingual cusp occluded only with ________?

A

Mandibular first premolar due to mesial placement of lingual cusp of maxillary first premolar

24
Q

Where is the lingual crest of curvature on all anterior teeth?

A

Cervical third

25
Q

Which teeth normally occlude with only one other tooth?

A

Maxillary third molars

Mandibular central incisors

26
Q

T/F: Buccal embrasures are normally larger than lingual embrasures.

A

FALSE!

Lingual embrasures are LARGER than buccal embrasures.

27
Q

T/F: From the distal view, a line connecting the cusp tips of the maxillary arch of teeth exhibit a slight convexity called a curve of Wilson.

A

FALSE!

this is the curve of spee

28
Q

From what view is the curve of wilson seen?

A

From lingual view

29
Q

When viewed from the facial, which of the following permanent teeth has a mesial cusp ridge longer than its distal cusp ridge?

A

Maxillary first premolar

30
Q

Which root is widest faciolingually on the maxillary first molar?

A

Mesiobuccal root

31
Q

What shape do incisors make from the proximal view?

A

Triangle/wedge

32
Q

Which way does the CEJ curve on the proximal of incisors?

A

Points at incisal edge

33
Q

Mandibular incisors have incisal edges that are more likely (lingual or facial) to midroot axis?

A

Lingual

34
Q

What shape is a cross section of a maxillary central incisor root?

Other incisors?

A

Triangular; oval

35
Q

T/F: On all anterior teeth, the mesial CEJ curves more than the distal.

A

TRUE

36
Q

Where is the largest CEJ curve for all teeth?

A

Mesial of maxillary central incisor

37
Q

T/F: The maxillary incisors act as a guide for the terminal part of jaw closure.

A

TRUE

38
Q

Which incisor is normally the narrowest mesio-distally?

A

Mandibular central incisor

39
Q

Which tooth structure contains the largest hydroxyapatite crystals?

A

Enamel

40
Q

Which anterior tooth is most likely to have decay in the developmental pit on the lingual surface?

A

Maxillary lateral incisor

41
Q

What are two major distinctions between maxillary 1st and 2nd molars?

A

Maxillary 1st much more likely to have cusp of carabeli on mesial lingual cusp

Maxillary 2nd will have a much smaller distolingual cusp (sometimes its missing)

42
Q

T/F: All premolars have a buccal crest of curvature more occlusal than the lingual crest of curvature.

A

FALSE.

Buccal is more cervical than lingual

43
Q

What is a distinguishing characteristic of a mandibular canine?

A

Mesial crown outline is in line with the root

44
Q

T/F: The mesial incisal cusp ridge of the mandibular canine is almost horizontal.

A

TRUE

45
Q

Which tooth may have a lingual ridge separating two lingual fossae?

A

Maxillary canine

46
Q

What is the snake eyes tooth?

A

Mandibular first premolar

47
Q

What is a distinguishing characteristic of a maxillary second premolar?

A

Short central groove

48
Q

The mesial surface of which tooth is most likely to cause issues with restorative dentistry?

A

Maxillary first premolar

49
Q

Which tooth may have a mesiolingual groove extending between the mesial marginal ridge and the lingual cusp?

A

Mandibular first premolar

50
Q

Which premolar is most likely to have a mesial cusp ridge pkt notch?

A

Mandibular first premolar

F16: Oral Anatomy (7 decks)

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