Dental Diseases 1

Question 1

What is normal occlusion?

Answer 1

Scissors bite

Question 2

The shelf on the palatal surface of max. incisors where mand. incisors occlude to “rest”

Answer 2

Cingulum

Question 3

Occlusion may be normal but some teeth are displaced (neutroclusion)

Answer 3

Class 1

Question 4

Cross-bite (rostral more common), base narrow canines

Answer 4

Class 1

Question 5

Malpositioned teeth, jaw length normal

Answer 5

Class 1

Question 6

Mandibular disoclussion

Answer 6

Class 2

Question 7

Changes in length of jaw - mandible shorter than it should be

Answer 7

Class 2

Question 8

Parrot mouth, overshot

Answer 8

Class 2

Question 9

Mandibular mesiocclusion

Answer 9

Class 3

Question 10

Changes in length of jaw - mandible longer than it should be

Answer 10

Class 3

Question 11

Undershot

Answer 11

Class 3

Question 12

Asymmetrical skeletal malocclusion

Answer 12

Class 4

Question 13

Maxillary bones close early and cause a shift in bite

Answer 13

Class 4

Question 14

Wry bite

Answer 14

Class 4

Question 15

Which side of the mouth are deciduous teeth compared to adult teeth and which tooth is the exception?

Answer 15

Deciduous buccal, adult lingual except maxillary canine teeth

Question 16

Rostrally displaced adult canine tooth most commonly seen in Shelties

Answer 16

Lance tooth

Question 17

Incisor crowns meet - considered a type of prognathism

Answer 17

Level bite

Question 18

Level bite

Answer 18

Class 3

Question 19

Unequal arch development

Answer 19

Wry bite

Question 20

How can you tx base-narrow canines and what is a side effect?

Answer 20

Maxi-temp acrylic may cause ulcers (easily treated)

Question 21

What causes retained deciduous teeth?

Answer 21

Failure of primary tooth root to undergo resorption

Question 22

What breeds and which teeth are commonly associated w/retained deciduous teeth?

Answer 22

Toy breeds, canines and incisors

Question 23

Retained deciduous _____ can cause base narrow canines

Answer 23

Mandibular canine teeth

Question 24

In what breeds is crowing most common and which tooth is most commonly affected?

Answer 24

Brachycephalics, max. PM3

Question 25

Which teeth are most often affected by polydontia?

Answer 25

Maxillary I/PM

Question 26

Which tooth is most often affected by supernumerary roots?

Answer 26

Max PM3

Question 27

What is the primary ddx of supernumerary roots?

Answer 27

Twinning/gemination

Question 28

Tooth has extra root of normal size and an extra cusp

Answer 28

Supernumerary roots

Question 29

Joining of 2 teeth: one crown and 2 roots

Answer 29

Fusion

Question 30

Will have less than normal number of teeth in arch

Answer 30

Fusion

Question 31

Incomplete splitting of 2 teeth: 2 crowns and 1 root

Answer 31

Gemination

Question 32

Which teeth are truly missing if a patient has anodontia?

Answer 32

I or PM

Question 33

Tooth completely displaced into the nasal cavity

Answer 33

Intrusive avulsion

Question 34

Which breeds are most commonly affected by impacted teeth and which tooth is most commonly affected?

Answer 34

Brachycephalics, mand. PM1

Question 35

What causes impacted teeth?

Answer 35

Lack of space in dental arch or misalignment of tooth bud

Question 36

When will an impacted tooth possibly have a better chance of erupting?

Answer 36

If overlying gingiva and alveolar bone is removed

Question 37

What is the most obvious clinical sign of dentigerous cyst?

Answer 37

Blue hue to swelling

Question 38

Fluid filled cyst surrounding crown of unerupted tooth

Answer 38

Dentigerous cyst

Question 39

How does a dentigerous cyst form?

Answer 39

Persistence of portions of the enamel forming epithelium even though the tooth is unerupted