Oral Anatomy

Question 1

Dentition

Answer 1

Teeth

Question 2

Primary/Deciduous

Answer 2

Baby teeth, form 16 weeks in utero, complete at age 3, first appears 6 mo, last appears 24 mo., Letter A-T

Question 3

Permanent/Succedaneous

Answer 3

Replace exfoliated deciduous teeth. Number 1-32

Question 4

Mandibular

Answer 4

Lower jaw

Question 5

Maxillary

Answer 5

Upper jaw

Question 6

Crown

Answer 6

Top of tooth, covered with enamel, main bulk is dentin, pulp chamber contains pulp

Question 7

Root

Answer 7

Pulp canal

Question 8

Pulp cavity

Answer 8

Pulp chamber + pulp canal

Question 9

Enamel

Answer 9

Hard tissue above cervical line

Question 10

Dentin

Answer 10

Hard tissue below enamel/cementum

Question 11

Cementum

Answer 11

Hard tissue below cervical line

Question 12

Pulp

Answer 12

Soft tissue, blood vessels and nerves

Question 13

Labial surface

Answer 13

Surface of incisors and canines toward lips

Question 14

Buccal surface

Answer 14

Surface of molars and premolars towards cheek

Question 15

Facial surface

Answer 15

Labial and buccal surfaces

Question 16

Lingual surface

Answer 16

All surfaces facing tongue

Question 17

Palatal surface

Answer 17

Maxillary teeth surfaces facing hard palate

Question 18

Incisal surface

Answer 18

Surface on incisors facing opposing teeth

Question 19

Occlusal surfface

Answer 19

Molars and premolars, surface facing opposing teeth

Question 20

Proximal surface

Answer 20

Facing adjoining teeth

Question 21

Mesial

Answer 21

Facing midline

Question 22

Distal

Answer 22

Facing away from midline

Question 23

Anterior teeth

Answer 23

Centrals, laterals, canines

Question 24

Posterior teeth

Answer 24

Molars and premolars

Question 25

Cusp

Answer 25

elevation or mound on crown

Question 26

Tubercle

Answer 26

Smaller elevation, usually abnormal

Question 27

Cinculum

Answer 27

Lingual lobe of anterior tooth

Question 28

Ridge

Answer 28

Linear elevation on a tooth surface

Question 29

Marginal ridge

Answer 29

Border marking mesial and distal borders or occlusal surface

Question 30

Triangular ridge

Answer 30

Ridge descends from tip of cusp into central part of occlusal surfaces

Question 31

Oblique ridge

Answer 31

Runs obliquely across surface of maxillary molars from distobuccal cusp to mesiolingual cusp

Question 32

Fossa

Answer 32

Irregular depression or cavity

Question 33

Triangular fossa

Answer 33

found on molars and premolars next to marginal ridges

Question 34

Sulcus

Answer 34

Long depression between ridges and cusps

Question 35

Developmental groove

Answer 35

Shallow groove between primary parts of crown or root

Question 36

Supplemental groove

Answer 36

Less distinct and does not mark junctions

Question 37

Buccal and lingual grooves

Answer 37

Are developmental on buccal and lingual surfaces

Question 38

Pits

Answer 38

Pinpoint depressions sometimes at junctions of developmental grooves

Question 39

Lobe

Answer 39

Primary section or formation of a tooth

Question 40

Mamelon

Answer 40

Small bumps found on incisal ridges on newly erupted incisors

Question 41

Anterior Line Angles

Answer 41

Found at junction of two surfaces. Mesiolabial, distolabial, mesiolingual, distolingual, labioincisal, labiolingual

Question 42

Posterior Line angles

Answer 42

Found at junction of two surfaces. Mesiobuccal, distobuccal, mesiolingual, distolingual, mesio-occlusal, disto-occlusal, bucco-occlusal, linguo-occlusal

Question 43

Point Angles

Answer 43

Found at junction of three surfaces, anterior only. Mesiolabioincisal, distolabioincisal