Unerupted Canines

Question 1

What are the 2 classifications of canine displacement?

Answer 1

Buccal
Palatal

Question 2

What are the 2 classifications of canine displacement?

Answer 2

Buccal
Palatal

Question 3

Give 4 places a canine may be displaced

Answer 3

Buccally
Palatally
Horizontal above apices of teeth
High next to nose

Question 4

When does development of canines commence?

Answer 4

4-5 months

Question 5

Name 6 possible aetiological factors of maxillary canine displacement

Answer 5

• displacement of crypt
  -long path of eruption
  -short-rooted or absent upper lateral
  -crowding
  -retention of deciduous canine
  -genetics

Question 6

What evidence is there to support that canine displacement could have a genetic aetiology?

Answer 6

-prevalence varies in different populations
-affects females more than males
-familial occurrence
-occurs bilaterally more often than expected
-occurs in association with other dental anomalies

Question 7

What other dental anomalies are associated with palatally displaced canines?

Answer 7

Hypodontia
Tooth size reduction
Transposition
Impacted upper first permanent molars
Other ectopic teeth
Infra-occluded deciduous molars
Late developing dentition