Chapter 16- Hard Tissue Examination of the Dentition

Question 1

a defect that occurs as a result of a disturbance during formation of the enamel matrix

Answer 1

enamel hypoplasia

Question 2

hereditary enamel defect in which the enamel is either thin or absent and may also have surface pitting or vertical grooves

Answer 2

amelogenesis imperfecta

Question 3

what systemic conditions may cause enamel hypoplasia

Answer 3

celiac, renal, or liver disease, infections causing fever, chemicals and drugs, nutrition deficiencies, preterm birth

Question 4

appearance of enamel hypoplasia

Answer 4

may appear yellow or brown

Question 5

occurs during the last stages of mineralization from a decrease in deposition of mineral

Answer 5

hypomaturation

Question 6

appearance of hypomaturation

Answer 6

opaque or discolored and fracture easily

Question 7

occurs during the maturation stage of enamel mineralization and may result in a higher risk for hypersensitivity, tooth wear, and caries

Answer 7

hypomineralization

Question 8

lesions resulting from loss of tooth structure near the CEJ not related to dental caries

Answer 8

noncarious cervical lesions

Question 9

radiographic signs of trauma

Answer 9

widened PDL, fracture line, tooth displacement

Question 10

requirements for the development of a carious lesion

Answer 10

microorganisms, fermentable carbohydrate, and susceptible tooth surface

Question 11

ICCMS A

Answer 11

subsurface demineralization, no cavitation of enamel

Question 12

ICCMS B

Answer 12

lesion has progressed to localized breakdown of the enamel, radiographically it extends to the dentin

Question 13

ICCMS C

Answer 13

cavitation exposing dentin, radiographically it extends into the inner half of dentin or into the pulp

Question 14

Class I caries

Answer 14

cavities in pits or fissures

Question 15

Class II caries

Answer 15

cavities in proximal surfaces of premolars and molars that do not involve the incisive angle

Question 16

Class III caries

Answer 16

cavities in proximal surfaces of incisors or canines that do not involve the incisive angle

Question 17

Class IV caries

Answer 17

cavities in procimal surfaces of incisors or canines that involve the incisive angle

Question 18

Class V caries

Answer 18

cavities in the cervical 1/3 of facial or lingual surfaces

Question 19

Class VI caries

Answer 19

cavities on the incisive edges of anterior teeth and cusp tips of posterior teeth

Question 20

Simple cavity

Answer 20

involves one tooth surface

Question 21

compound cavity

Answer 21

involves two tooth surfaces

Question 22

complex cavity

Answer 22

involves more than two tooth surfaces

Question 23

carious lesion that has not changed and does not show a tendency to progress further

Answer 23

arrested

Question 24

Normal overbite

Answer 24

incisal edges of maxillary teeth are within the incisal third of the mandibular teeth

Question 25

moderate overbite

Answer 25

incisal edges of maxillary teeth appear within the middle third of the mandibular teeth

Question 26

deep (severe) overbite

Answer 26

when the incisal edges of the maxillary teeth are within the cervical third of the mandibular teeth

Question 27

very deep overbite

Answer 27

incisal edges of the mandibular teeth are in contact with the maxillary lingual gingival tissue

Question 28

tooth assumed position labial to normal

Answer 28

labioversion

Question 29

tooth position is lingual to normal

Answer 29

linguoversion

Question 30

tooth position is buccal to normal

Answer 30

buccoversion

Question 31

elongated above the line of occlusion

Answer 31

supraversion

Question 32

tooth is turned or rotated

Answer 32

torsiversion

Question 33

tooth is depressed below the line of occlusion

Answer 33

infraversion