Deck 23: Developmental Disturbances of Teeth and Bone

Question 1

When a tooth has what appears to be two crowns and one root canal, the condition is called ___________.

Answer 1

gemination

Question 2

Which of the following condition(s)are hereditary disturbances?

A)fusion
B)amelogenesis imperfecta
C)dentinogenesis imperfecta
D)b and c

Answer 2

b and c

Question 3

In amelogenesis imperfecta, the tooth tissue(s)that are affected include:

A)enamel
B)dentin
C)pulp
D)all of the above are affected

Answer 3

enamel

Question 4

After the tooth erupts, the dental papilla appears:

A)at the crown
B)buccal to the crown
C)lingual to the crown
D)at the forming apices

Question 5

Teeth that exhibit dilaceration may be a problem if what type of treatment is needed?

A)endodontic therapy
B)extraction
C)amalgam restoration
D)a and b

Question 6

All of the following terms are synonymous EXCEPT:

A)supernumerary teeth
B)extra teeth
C)hypodontia
D)hyperdontia

Question 7

A supernumerary tooth in the midline is referred to as a (an):

A)odontoform
B)mesiodens
C)enamel pearl
D)taurodont

Question 8

The teeth in the area of fissural cysts usually test __________.

Question 9

An S-shaped root condition is referred to as ______________.

Question 10

A club-shaped root is usually a sign of:

A)pathology
B)concrescence
C)hypercementosis
D)cemental dysplasia

Question 11

Identify the teeth most commonly impacted:

A)maxillary and mandibular third molars
B)maxillary canines
C)mandibular premolars
D)mandibular canines

Question 12

Cleft palate can occur in either the hard or soft palate, or both. Radiographically, a cleft palate will appear as a radiopaque area.

A)both statements are true
B)both statements are false
C)the first statement is true;the second statement is false
D)the first statement is false;the second statement is true

Question 13

Anodontia refers to:

A)extra teeth
B)the complete absence of teeth
C)malpositioned teeth
D)multiple impacted teeth

Question 14

Impacted teeth can be localized in their mesiodistal position by periapical, ___________, or lateral oblique films.

Question 15

The joining of two or more teeth by cementum is termed:

A)germination
B)fusion
C)concrescence
D)taurodontism

Question 16

Dens "invaginatus" is:

A)an invagination of the enamel organ
B)usually at the point of the cingulum
C)not a "tooth within a tooth"
D)all of the above

Question 17

Identify the teeth most commonly associated with dentigerous cysts:

A)incisors
B)third molars
C)canines
D)all teeth are associated with dentigerous cysts

Question 18

When teeth chip easily and radiographs reveal short roots and early pulp calcification, __________ is present.

Question 19

Radiographically in fusion we see:

A)two pulp canals
B)calcified canals
C)one pulp canal
D)all of the above

Question 20

Identify the location of the permanent tooth buds as they develop:

A)mesially to the deciduous teeth
B)apically to the deciduous teeth
C)distally to the deciduous teeth
D)all of the above are correct