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Question 1

Microdontia:

Answer 1

Microdontia: Having one or more teeth that are smaller than normal.

Question 2

Macrodontia:

Answer 2

Macrodontia: Having one or more teeth that are larger than normal

Question 3

Complete anodontia:

Answer 3

Complete anodontia: Congenital absence of teeth; generally due to developmental

abnormalities such as ectodermal dysplasia.

Question 4

Partial anodontia

Answer 4

Partial anodontia: Congenital absence of one or more teeth.

Question 5

Hypodontia:

Answer 5

Hypodontia: Congenital absence of a few teeth.

Question 6

Oligodontia:

Answer 6

Congenital absence of a large number of teeth.

Question 7

Supernumerary teeth:

Answer 7

Supernumerary teeth: Teeth in excess of the normal number. Most common

in maxilla.

Question 8

Mesiodens:

Answer 8

Mesiodens: A supernumerary tooth located between the maxillary central

incisors.

Question 9

Ankylosis:

Answer 9

Ankylosis: Fusion of the tooth and alveolar bone.

Question 10

Dilaceration:

Answer 10

Dilaceration: A bend in the root of a tooth

Question 11

Taurodontism

Answer 11

Taurodontism: A molar with an elongated root trunk. Generally occurs in

patients with amelogenesis imperfecta, Klinefelter’s syndrome, or Down’s

syndrome

Question 12

■ Dens invaginatus (dens in dente

Answer 12

syndrome.

■ Dens invaginatus (dens in dente): Developmental abnormality of maxillary

lateral incisors in which the focal crown is invaginated for various

distances.

Question 13

Dens evaginatus:

Answer 13

Dens evaginatus: Developmental abnormality in which a focal portion ofthe crown projects outward, creating an extra cusp.

Question 14

A prominent dens

evaginatus often seen on maxillary lateral incisors is called a — –

Answer 14

A prominent dens

evaginatus often seen on maxillary lateral incisors is called a talon cusp.

Question 15

Hypercementosis:

Answer 15

Hypercementosis: Excessive deposition of cementum.

Question 16

Cervical enamel projection:

Answer 16

Cervical enamel projection: An apical extension of enamel usually located

at furcation entrances on molar teeth.

Question 17

Enamel pearl:

Answer 17

Enamel pearl: A small, focal mass of enamel formed apical to the CEJ.

Question 18

Concrescence:

Answer 18

Concrescence: Fusion of two completely formed teeth at their roots; must

have confluent cementum.

Question 19

Fusion: F

Answer 19

Fusion: Fusion of two unique tooth buds; must have confluent dentin. Its

severity depends on the stage of tooth development at which the fusion

occurs.

Question 20

Gemination:

Answer 20

Gemination: Development of two crowns from one tooth bud; share a

single root and root canal. (See Figure 28–2.)

Question 21

https://drive.google.com/open?id=0B8uJUY-tie8Gc0dWZ01qMDRlakk

Answer 21

https://drive.google.com/open?id=0B8uJUY-tie8GNUJEM3N6V2JVb1U