Interceptive Orthodontics II

Question 1

at what age are permanent canines palpable in a childs mouth?

Answer 1

90% palpable by 11 years

Question 2

how can you go about identifying unerupted canines in a childs mouth?

Answer 2

1. Visually
2. Palpate (if unerupted or no bumps)
3. Radiographs (if cannot see)

OPT is preferred radiograph

Question 3

what is an ectopic tooth?

Answer 3

a tooth that’s not located in the dental arch due to a faulty course during eruption

Question 4

what are the risks of doing nothing to ectopic primary teeth?

Answer 4

• the permanent tooth is likely to become ectopic
• permanent tooth might fail to erupt
• risk of root resorption to adjacent teeth
• the permanent tooth may become ankylosed