Aetiology, Epidemiology and Prevention

Question 1

What is the most common dental injury?

Answer 1

Crown fracture of upper central incisor (71%)

Question 2

Which group are more affected by dental trauma?

Male or Female

Answer 2

Male:female is 2:1

Question 3

What are some associated factors to dental trauma?

Answer 3

Previous trauma
Class II div 1 (increased risk with increased overjet)
Lip incompetence

Question 4

What types of trauma to primary teeth is permanent damage to successor teeth more common?

And what age groups?

Answer 4

More likely in intrusion, avulsion and alveolar fractures in child less than 3 years old

Question 5

What are some complications to successor teeth when there has been dental trauma?

Answer 5

Impaction leadind to scar tissue (harder to come out)
Ectopic eruption
Enamel hypoplasia / hypomineralisation Dilaceration *
Arrested crown or root development
Root duplication
Sequestration of tooth

*Deviation or bend in the linear relationship of a tooth crown to root