Anatomy Ch 12

Question 1

Functional occlusion

Answer 1

Contact of the teeth during biting and chewing movements

Question 2

What is the key to angles classification

Answer 2

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

Question 3

Which two teeth vary in form

Answer 3

Lateral incisors 7,10 and 3rd molars

Question 4

Pegged laterals

Answer 4

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

Question 5

Mamelons

Answer 5

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

Question 6

Fossa

Answer 6

Wide shallow depression on the lingual surfaces of anterior teeth

Question 7

Cingulum

Answer 7

Raised rounded area on the cervical third of the lingual surface

Question 8

Class 1 occlusion

Answer 8

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

Question 9

Class 2 occlusion

Answer 9

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

Question 10

Class 2 division 1 occlusion

Answer 10

Labioversion incisors tilt toward lips

Question 11

Class 2 division 2 occlusion

Answer 11

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

Question 12

Class 3 occlusion

Answer 12

Mesioclusion protrusion of mandible

Question 13

Tooth numbering system used most in US

Answer 13

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

Question 14

International standards organization system

Answer 14

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

Question 15

Palmer notation system

Answer 15

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

Question 16

Pit

Answer 16

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

Question 17

Central and triangular fossa

Answer 17

Where 2 or 3 cusp ridges meet

Question 18

Groove

Answer 18

sharp deep v-shaped linear depressions

Question 19

5th cusp

Answer 19

Cusp of carabelli located on the maxillary first molar

Question 20

What teeth are nonsuccedaneous

Answer 20

All molars

Question 21

Which tooth is the largest

Answer 21

Maxillary first molar

Question 22

Features of maxillary first premolar

Answer 22

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

Question 23

Furcation

Answer 23

Area between two or more root branches

Question 24

Tricanineate

Answer 24

3 cusp type

Question 25

Difference between primary and perm dentition

Answer 25

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

Question 26

Diff in primary incisors from perm

Answer 26

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

Question 27

Maxillary first premolar has what kind of root

Answer 27

Bifurcated

Question 28

Inclined cuspal planes

Answer 28

The sloping areas between ridges

Question 29

Central groove

Answer 29

Divides occlusal table in half

Question 30

Marginal groove

Answer 30

Spillway on side of tooth crosses marginal ridge

Question 31

Triangular grooves

Answer 31

Separate marginal ridge from triangular ridge of a cusp

Question 32

Maxillary second premolar

Answer 32

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

Question 33

Mandibular first premolar

Answer 33

Long well formed buccal cusp nonfunctioning lingual cusp

Question 34

Mandibular second premolar

Answer 34

2 & 3 cusp type Y and U shape

Question 35

What teeth are first perm to erupt

Answer 35

Maxillary molars

Question 36

3rd molar

Answer 36

Crown smaller roots shorter and fused

Question 37

Mandibular first molar

Answer 37

Erupt between 6-7 yrs first perm teeth 2 roots

Question 38

Mandibular second molar

Answer 38

2 roots 4 cusps