Anatomy - Chapter 8 (Obj 1.2) Flashcards

1
Q

anatomical crown

A

is the whole crown of the tooth, whether it has erupted or not

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2
Q

clinical crown

A

is part of the tooth that can be seen in the mouth

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3
Q

Roots

A

The root portion or system of a tooth may be single or multiple with bifurcation or trifurcation, that is, the division of the root trunk into two or three roots

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4
Q

Enamel

A

hard protective tissue that covers the crown of the tooth, hardest tooth tissue, colour varies with thickness, it is thickest at the tip

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5
Q

Dentin

A

Makes up the bulk of the tooth, in both the crown and the root, “body of the tooth”, softer than enamel, harden then cementum or bone

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6
Q

Cementum

A

covers root of teeth, light yellow, attaches tooth to bone, softer than dentin & enamel

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7
Q

pulp

A

soft connective tissue containing nerves & blood tissues, surrounded by dentin

2 parts of pulp - chamber & canal
pulp horn is extension of chamber

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8
Q

Crown

A

white part of tooth, covered with enamel

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9
Q

CEJ - Cemento-enamel juntion

A

cementum meets enamel, also called cervical line or cervix

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10
Q

root

A

part of the tooth covered in cementum, embedded in bone

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11
Q

apex

A

terminal end of the root

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12
Q

apical foramen

A

tiny opening in apex of the root for blood vessles and roots to enter

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13
Q

apical

A

bottom of tooth (bottom of root)

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14
Q

coronal

A

top of tooth (crown)

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15
Q

radicular

A

having to do with tooth root, “crotch” of the root, the split

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16
Q

Single rooted

A

all anterior teeth are single rooted

17
Q

bifurcated root

A

two separate roots, divided in 2 parts, typically lower (mandi) molars

18
Q

trifurcated roots

A

separated into 3 roots/parts, maximum anchor, typically upper (maxi) molars

19
Q

incisors

A

4 incisors in each arch, centrals & laterals (2 in each arch), single rooted, one sharp incisal edge, used to cut/incise food

20
Q

cuspids/canines

A

2 cuspids in each arch, next to lateral incisors, corner of arches, longest root, one pointed cusp, cornerstone of mouth, used for holding, grasping, tearing food

21
Q

premolars

A

4 premolars in each arch, 2 first premolars (1st next to cuspid, then 2nd), the maxi 1st premolar is bifurcated, the rest maxi (& all mandis) are single rooted, one prominent cusp with 1 or 2 less lingual cusp, used for holding food, grinding food

22
Q

molars

A

6 molars in each arch, 3 per quad, the 3rd molar is the most posterior (wisdom teeth), have bi or tri roots, broad chewing surfaces with 4 or 5 cusps, used for griding or chewing food

23
Q

occlusal surfaces

A

on the posterior teeth - the top - biting/chewing surface

24
Q

incisal surfaces

A

on the anterior teeth - the sharp edge

25
Q

lingual surfaces (or palatal)

A

surfaces that your tongue touches

26
Q

facial surfaces

A

touching your face

27
Q

buccal surfaces

A

touching your cheek

28
Q

labial surfaces

A

touching your lips

29
Q

proximal surfaces

A

mesial surfaces - toward the midline
distal surfaces - away from the midline

30
Q

interproximal area

A

space between teeth

31
Q

line angles

A

where 2 surfaces meet (nomenclature starts with proximal, then buccal or lingual surface, then angle/line angle)

32
Q

point angle

A

where 3 surfaces meet (incisal or occlusal always last in nomenclature)