Paedodontics

Question 1

a. 2 Bitewings given. Describe and comment on the carious lesion (5)
b. Short term and long term consequences of not treating caries (5)

Answer 1

Question 2

c. Which permanent tooth germs can’t be seen on the radiograph and explain why? (4)

Answer 2

Third molar because the patient is 5 years old but the third molar will not start calcifying until 7-9-year- old and 8-10-year old in upper and lower respectively. The tooth germ can only be visible when the tooth starts to calcify.

Question 3

d. What is this anomaly? At what stage of tooth development it occurs? (2)

Answer 3

 Supernumerary tooth (is it also a mesiodens?)

Question 4

e. Complications of this anomaly in developing dentition? Suggest at least four. (4)

Answer 4

(Prevalence, etiology, diagnosis, treatment and complications of supernumerary teeth)

• Complications associated with supernumerary teeth include
• Dental impaction
• Delayed eruption
• Ectopic eruption
• Overcrowding
• Spacing anomalies
• Formation of follicular cyst

Question 5

f. What is the prevalence of this anomaly in HK and 2 syndromes related. (3)

Answer 5

 2.7%
 Cleidocranial dysostosis/dysplasia, cleft lip and palate, Gardner’s syndrome…

Question 6

g. How would you manage the anomaly in this case? (2)

Answer 6