Tutorials

Question 1

6 indications for extraction of a primary tooth

Answer 1

• caries reaching pulp cavity
• trauma reaching pulp cavity
• periapical infection
• to allow eruption of secondary tooth
• ortho
• supernumary teeth

Question 2

disadvantages of extracting primary teeth 7

Answer 2

• loss of function
• no guidance of permanent teeth in to position
• drifting
• traumatic to child
• GA
• aesthetics (esp incisors)
• loss of function
• centre line shift

Question 3

extraction of what teeth causes a centre line shift. what is done to counteract this

Answer 3

Cs

balancing extraction: extract contralateral tooth at the same time

Question 4

what tooth never has balancing extraction and why

Answer 4

Es. 6s drift forward

Question 5

how may extraction of permanent tooth germ cause damage to permanent successor

Answer 5

permanent tooth germ may become attached to deciduous (damage through follicle)

Question 6

4 post op instructions for children after XLA

Answer 6

• do not chew lip
• leave wound alone
• no hot food/drinks
• do not rinse for 24 hours

Question 7

% and mg/ml of

a. lidocaine
b. prilocaine

Answer 7

a. lidocaine: 2%, 20mg/ml

b. prilocaine: 3% (3mg/ml) or 4% (40mg/ml)

Question 8

max dose of

a. lidocaine 2%
b. prilocaine 3%
c. prilocaine 4%

Answer 8

max dose of

a. lidocaine 2%: 4.4mg/kg
b. prilocaine 3%: 6.6mg/kg
c. prilocaine 4%: 5mg/kg

Question 9

dose calculations

Answer 9

.

Question 10

where is the mandibular foramen located in children compared to adults

Answer 10

below plane of occlusion, more anterior than in adults due to narrow antero-posterior width of childs mandible