Paediatric Dentisry

Question 1

For extraction of first permanent molars, which of these statements is not correct?
A - Compensating extraction of an upper first molar is not recommended when extraction of lower first molar is indicated, to prevent overeruption of an unapposed first molar
B - In crowded cases with bilateral buccal segment crowding, consider a balancing extraction to provide space and maintain the centre line
C - Balancing the extraction of healthy first molars can sometimes be recommended in either arch, after advice has been sought from an orthodontist
D - Compensating extraction of an upper first molar is not recommended when extraction of lower first molar is indicated, to allow for mesial movement of the lower second movement
E - In uncrowded cases, if the upper first molar is to be lost, compensate with extraction of healthy lower first molar

Answer 1

B - In crowded cases with bilateral buccal segment crowding, consider a balancing extraction to provide space and maintain the centre line

Question 2

A 10 year old boy presents to the practice 20 minutes after being struck in the face while playing in the playground at school. On examination, the injured tooth, which is an upper right central incisor, appears to be be loose but no displacement.
Which of the following is the likely diagnosis?
A - Ankylosis
B - Concussion
C - Intrusion
D - Luxation
E - Subluxation

Answer 2

E - subluxation
Keywords - loosening of the tooth, no socket displacement
Tx - splint for 2 weeks

Question 3

Which of the following medications if mostly associated with gingival enlargement in children?
A - Carbamazepine
B - Clonazepam
C - Lamotrigine
D - Phenytoin
E - Sodium valproate

Answer 3

D - Phenytoin
Epilespy medication

Question 4

A 14 year patient presents complaing of teeth which are constantly breaking down. Clinically, they appear to have a bluish/brown hue. Radiographically, the pulps have been obliterated.
What is the most likely diagnosis?
A - Amelogenisis imperfect
B - Caries
C - Chronological hypoplasia
D - Dentinogenesis imperfecta
E - MIH

Answer 4

D - dentinogenesis imperfecta
Keywords - bluish/brownish, obliterated pulp

Question 5

In embryology, when does fusion of the secondary plate occur?
A - 2-3 weeks in utero
B - 3-4 weeks in utero
C - 4-5 weeks in utero
D - 5-6 weeks in utero
E - 6-7 weeks in utero

Answer 5

E - 7-8 weeks in utero

Question 6

What is the most ideal age for extraction of a permanent lower first molar to obtain favourable spontaneous space closure and development of dentition?
A - 6-8 years
B - 8-10 years
C - 10-12 years
D - 12-14 years
E - 14-16 years

Answer 6

B - 8-10 years

Question 7

Which of the following is associated with premature loss of teeth?
A - Down syndrome
B - Hereditary gingival fibromatosis
C - Hypophosphatasia
D - Hypothyroidism
E - Williams syndrome

Answer 7

C - hypophasphatasia
Affects bone metabolism

Question 8

An 8 year old was referred by his paediatric dentist for an orthodontic consultation regarding his anterior bite. Extraorally, he has a balanced face with pleasant profile, with the maxillary dental midline coincident with facial midline, but an anterior crossbite of the maxillary right permanent incisor.
Whatappliance would you most likely use to treat him?
A - URA with anterior bite plane and midline screw
B - URA with a midline screw and T spring
C - URA with posterior bite plane and midline screw
D - URA with anterior bite plane and T spring
E - URA with posterior bite plane and Z spring

Answer 8

E - URA with posterior bite plane and Z spring

Question 9

What age can you palpate permanent canines?

Answer 9

9-10 years

Question 10

Treatment planning stages for paeds?

Answer 10

Prevention, acclimatisation, stabilisation, reassess, restore