Anatomy Ch 12 Flashcards Preview

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Flashcards in Anatomy Ch 12 Deck (38):
1

Functional occlusion

Contact of the teeth during biting and chewing movements

2

What is the key to angles classification

Describes and classifies occlusion and malocclusion (perm maxillary first molar)

3

Which two teeth vary in form

Lateral incisors 7,10 and 3rd molars

4

Pegged laterals

Vary in form second most to wisdom teeth. Frequently missing and pointed (maxillary lateral incisors)

5

Mamelons

Rounded enamel extensions on Incisal edge on central and lateral incisors (looks like shark teeth)

6

Fossa

Wide shallow depression on the lingual surfaces of anterior teeth

7

Cingulum

Raised rounded area on the cervical third of the lingual surface

8

Class 1 occlusion

Neutroclusion ideal mesiodistal relationship maxillary first molar occludes with mesiobuccal groove of mandibular first molar

9

Class 2 occlusion

Distoclusion mesiobuccal cusp of maxillary first molar occludes more than a premolars width mesial to the mesiobuccal groove of mandibular first molar

10

Class 2 division 1 occlusion

Labioversion incisors tilt toward lips

11

Class 2 division 2 occlusion

Linguoversion tipping toward tongue. Lateral incisors may be tipped labially and mesially

12

Class 3 occlusion

Mesioclusion protrusion of mandible

13

Tooth numbering system used most in US

Universal/national system. 1-32, a-t

14

International standards organization system

2 digit first number is quadrant and second is tooth within quadrant. Tooth 8=11, tooth 1=18, tooth 9=21, tooth 16=28 etc

15

Palmer notation system

Each quadrant given tooth bracket either vertical or horizontal viewing patient from outside. Each incisor on mandible and maxillary begin with 1 and end with 8

16

Pit

Located in deepest part of fossa sharp pin point depression where 2 or more grooves meet

17

Central and triangular fossa

Where 2 or 3 cusp ridges meet

18

Groove

sharp deep v-shaped linear depressions

19

5th cusp

Cusp of carabelli located on the maxillary first molar

20

What teeth are nonsuccedaneous

All molars

21

Which tooth is the largest

Maxillary first molar

22

Features of maxillary first premolar

2 cusps 2 roots larger than 2nd erupt before mandibular bifurcated root

23

Furcation

Area between two or more root branches

24

Tricanineate

3 cusp type

25

Difference between primary and perm dentition

Primary smaller whiter enamel crown in shorter crowns narrower at CEJ roots narrower and longer than crown pulp chamber/horns large compared to perm thick layer of dentin between pulp chamber and enamel enamel layer thin

26

Diff in primary incisors from perm

Crowns and roots smaller roots twice as long as crowns taper toward apex

27

Maxillary first premolar has what kind of root

Bifurcated

28

Inclined cuspal planes

The sloping areas between ridges

29

Central groove

Divides occlusal table in half

30

Marginal groove

Spillway on side of tooth crosses marginal ridge

31

Triangular grooves

Separate marginal ridge from triangular ridge of a cusp

32

Maxillary second premolar

2 cusps one root equal length cusps not as sharp as first one root slight depression on mesial root

33

Mandibular first premolar

Long well formed buccal cusp nonfunctioning lingual cusp

34

Mandibular second premolar

2 & 3 cusp type Y and U shape

35

What teeth are first perm to erupt

Maxillary molars

36

3rd molar

Crown smaller roots shorter and fused

37

Mandibular first molar

Erupt between 6-7 yrs first perm teeth 2 roots

38

Mandibular second molar

2 roots 4 cusps