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Dental Hygiene: Anatomy > Tooth Landmarks & Morphology > Flashcards

Tooth Landmarks & Morphology Flashcards

1
Q

List the surfaces of teeth

A

-Lingual (palatal for maxillary teeth)
-Facial (labial and buccal)
-Proximal (faces neighboring tooth)
-Occlusal (biting/chewing surface)

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2
Q

Vertical Divison of Crown Surfaces- Direct facial and lingual surfaces

A

-mesial third
-middle third
-distal third

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3
Q

Vertical Divison of Crown Surfaces- proximal surfaces

A

-facial third
-middle third
-lingual third

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4
Q

Horizontal Division of Crown Surfaces

A

-incisal/occlusal 3rd
-middle 3rd
-cervical 3rd

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5
Q

Horizontal Division of Root Surfaces

A

-cervical third
-middle third
-apical third

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6
Q

What does the root-to-crown ratio represent?

A

larger ratio: relatively larger root compared to crown
small ratio: nearly equal root and crown lengths

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7
Q

Line angles are formed at the junction of ___ surfaces

A

2

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8
Q

How are line angles named?

A

according to the surfaces they join with proximal name first and occlusal/incisal name last
example/ distolabial, mesiobuccal

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9
Q

List the ANTERIOR Teeth line angles

A

-labioincisal
-mesiolingual
-mesiolabial
-linguoincsial
-distolingual
-distolabial

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10
Q

List the POSTERIOR Teeth line angles

A

-mesio-occlusal
-mesiolingual
-mesiobuccal
-bucco-occlusal
-linguo-occlusal
-distolingual
-distobuccal
-disto-occlusal

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11
Q

Point angles are formed at the junction of ___ surfaces

A

3

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12
Q

List the point angles for ANTERIOR teeth

A

-mesiolabioincisal
-mesiolinguoincisal
-distolabioincisal
-distolinguoincisal

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13
Q

List the point angles for POSTERIOR teeth

A

-mesiobucco-occlusal
-distolinguo-occlusal
-distobucco-occlusal
-mesiolinguo-occlusal

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14
Q

Another word for fusion in dentistry is…

A

Coalescence

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15
Q

True or False: Developmental grooves remain after fusion

A

True; due to separate parts of the tooth being formed by lobes

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16
Q

How many development lobes are there for anterior teeth and most premolars?

A

4 lobes: 3 facial and 1 lingual

17
Q

What is a cingulum

A

a prominence or bulge on the lingual surface of all anterior teeth

18
Q

How many development lobes are for the 1st molars?

A

4-5
mandibular: 2 lingual 3 facial
maxillary: 2 facial 2 lingual

19
Q

What is a tubercle

A

a small elevation of enamel on the crown

20
Q

What are Cusps of Carabelli?

A

tubercles on the mesiopalatal line angle of maxillary 1st molars, may be considered by some as simply a cusp if its well developed

21
Q

Describe mamelons

A

scalloped like edges on the enamel located on the incisal ridge, it is naturally worn away with normal use of teeth and therefor wear on the enamel

22
Q

What are perikymata

A

very small wave like ripples of enamel on newly erupted adult teeth; these bumps are created due to the layer like growth of enamel

23
Q

Central grooves run _____.

A

mesiodistally

24
Q

Fossae

A

shallow depression or concavity

25
Q

Pits

A

pinpoint depression often found within fossae

26
Q

Three cusped premolars and most molars have three fossae, list them

A

-mesial
-central
-distal

27
Q

Two cusped premolars have two fossae, list them

A

-mesial
-distal

28
Q

Describe cusps

A

rounded mounds found on the crown. is a major division of the occlusal or incisal surface. it is the most obvious landmark on posterior teeth, and the number varies according to the tooth.

29
Q

What are ridges?

A

linear elevated portion of a tooth that runs in a line

30
Q

Canines and posterior teeth have how many cusps?

A

1-5

31
Q

Most cusps are named after the closest _______.

A

tooth surface or line angle

32
Q

Triangular ridges

A

the main ridges on each cusp that run from the tip of the cusp to the central part of the occlusal surface

33
Q

Transverse Ridges

A

the union of two triangular ridges that cross the occlusal surface

34
Q

LOOK AT THE CANVAS POWERPOINT FOR RIDGE/CUSP DIAGRAMS

A

I am broke and this flash card app as well as quizlet makes you pay to add images 🙄👎

Dental Hygiene: Anatomy (6 decks)

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