DENTAL ANATOMY

Question 1

a field of anatomy dedicated to the study of human tooth structures and is also a taxonomical science as it concerns naming of teeth and the structures of which they are made, serving a practical purpose in dental treatment

Answer 1

dental anatomy

Question 2

teeth are named by their set, arch, class, type, and side

Answer 2

nomenclature

Question 3

primary or baby teeth which makes up 20 teeth

Answer 3

deciduous teeth

Question 4

secondary or adult teeth which makes up 28 to 32 teeth

Answer 4

permanent teeth

Question 5

refers to those teeth of the permanent dentition that replace primary teeth for incisors, canines, and premolars of the permanent dentition

Answer 5

succedaneous tooth/teeth

Question 6

permanent teeth that are not preceded by a primary form, specifically on molars

Answer 6

non-succedaneous tooth/teeth

Question 7

teeth in the upper jaw

Answer 7

maxillary

Question 8

teeth in the lower jaw

Answer 8

mandibulary

Question 9

anterior teeth makes up of

Answer 9

incisors and canine

Question 10

posterior teeth are made up of

Answer 10

premolars and molars

Question 11

from the latin word incidere, meaning to cut; the first kind of tooth in human that works for cutting or shearing instruments for food

Answer 11

incisors

Question 12

possess the longest roots of all teeth and are located at the corners of the dental arch; used for ripping and tearing food

Answer 12

canine or cuspids

Question 13

are transitional teeth located between the canine and molar teeth that acts like the canine in tearing of food and are similar to molars in grinding of food

Answer 13

premolars or bicuspids

Question 14

from the latin word mola, means milstone; used for grinding food

Answer 14

molar

Question 15

numbering systems

Answer 15

FDI world dental federation notation
universal numbering system
palmer notation method

Question 16

developed in 1971 to identify teeth with a number and is widely recognized and used worldwide

Answer 16

FDI (Federation Dentaire Internationale) World Dental Federation notation / FDI two-digit notation / ISO-3950 notation

Question 17

a simplified method of identifying teeth adopted by the american dental association which uses uppercase letters

Answer 17

universal numbering system

Question 18

developed by adolf zsigmondy in 1891 using a zsignmondy cross to record quadrants of tooth positions

Answer 18

palmer notation / zsigmondy system

Question 19

tooth surfaces

Answer 19

apical
labial / buccal
lingual / palatal
distal
mesial
incisal / occlusal

Question 20

surface of the anterior tooth facing toward the lip

Answer 20

labial surface

Question 21

surface of posterior tooth facing toward the cheek

Answer 21

buccal surface

Question 22

surface of tooth closest or next to tongue wherein on the maxillary teeth it’s called _ and on the mandibular teeth it’s called _

Answer 22

palatal surface , lingual surface

Question 23

surface of the teeth facing toward the surface of the adjacent teeth

Answer 23

proximal surface

Question 24

surface of the tooth wc is toward the median line

Answer 24

mesial surface

Question 25

surface of the tooth wc is away from the median line

Answer 25

distal surface

Question 26

surface of the anterior tooth wc is used for cutting or tearing food

Answer 26

incisal surface

Question 27

surface of the posterior tooth wc is used for grinding food and the surface of a tooth wc occludes w the opposing tooth

Answer 27

occlusal edge

Question 28

any linear elevation on the surface of the crown and is named according to its location

Answer 28

ridge

Question 29

a linear, rounded border of enamel that forms the mesial and distal margins of anterior teeth in lingual aspect, and the mesial and distal borders of occlusal surface on posterior teeth

Answer 29

marginal ridge

Question 30

a linear elevation which descend from one tip of the cusp to the central part of the occlusal; the slope of each side of the ridge resemble 2 sides of a triangle

Answer 30

triangular ridge

Question 31

found only in maxillary molar; consists of an elevated prominence of the occlusal surface and extends obliquely from the tips of the mesiolingual cusp to the distobuccal cusp

Answer 31

oblique ridge

Question 32

the ridge of enamel that extends from the cingulum to the cusp tip on the lingual surface of most cuspids

Answer 32

lingual ridge

Question 33

the union of a buccal and lingual triangular ridge that crosses the surface of a posterior tooth transversely

Answer 33

transverse ridge

Question 34

a pointed or rounded elevation of enamel found on cuspids and on the chewing surfaces of bicuspids and molars

Answer 34

cusp

Question 35

found on the lingual aspect of an anterior tooth and is a convex mount of enamel localized to the cervical one-third of the crown

Answer 35

cingulum

Question 36

a small pinpoint depression found at the junction or terminals of the developmental grooves and named accdng. to its location

Answer 36

pit

Question 37

a rounded or angular depression of varying size found on the surface of a tooth

Answer 37

fossa

Question 38

centrally located depression found on the occlusal surface of molars and mandibular second bicuspids

Answer 38

central fossa

Question 39

irregular, shallow depression found on the lingual surface of an incisor or cuspid

Answer 39

lingual fossa

Question 40

located adjacent to the marginal ridges on the occlusal surface of posterior teeth and has 2 types (mesial and distal)

Answer 40

triangular fossa

Question 41

a small linear depression on the surface of a tooth

Answer 41

groove

Question 42

fissure between the cusps on the crown of the tooth

Answer 42

developmental grooves

Question 43

a minor, auxillary groove that branches off from a much more prominent developmental groove and do not represent the junction of primary tooth parts and gives the occlusal surface a wrinkled appearance

Answer 43

supplemental groove

Question 44

one of the primary divisiosn of a crown wherein all teeth develop 4 or 5 and is usually separated by readily identifiable developmental grooves

Answer 44

lobe

Question 45

are small, rounded projections of enamel from the incisal edges of newly erupted anterior teeth and wears away soon after eruption

Answer 45

mamelons

Question 46

the portion of the tooth covered by enamel

Answer 46

crown

Question 47

the lower two thirds of a tooth covered by cementum

Answer 47

root

Question 48

cementoenamel junction separating crown and root

Answer 48

cervical line

Question 49

the hardest and most highly mineralized substance of the body and is normally visible dental tissue of a tooth because it covers the anatomical crown and must be supported by underlying dentin

Answer 49

enamel

Question 50

substance between enamel and pulp chamber; bulk of a tooth; softer than enamel and decays rapidly

Answer 50

dentin

Question 51

is a specialized bone like substance covering the root of the mouth; its principal role is to serve as medium periodontal ligaments can attach to the tooth for stability

Answer 51

cementum

Question 52

central part of the tooth filled with soft connective tissue

Answer 52

pulp

Question 53

an imaginary line that goes through the crown and root around which the substance of tooth is most symmetrically distributed

Answer 53

long axis

Question 54

any surface of a tooth parallel to the long axis (ex: mesial, distal, facial, or lingual surfaces)

Answer 54

axial surface

Question 55

division into thirds which divides cervical third, middle third, and apical third

Answer 55

root

Question 56

division into thirds in three directions: inciso-occlusocervically, mesiodistally, or labio or buccolingually

Answer 56

crown

Question 57

an angle formed by the junction of two crown surface and derives its name from its surface

Answer 57

line angle

Question 58

formed by the junction of three crown surface

Answer 58

point angle