NDEB Pediatric Dentistry and Orthodontics

Question 1

At what age do the permanent first molars typically erupt in children?

Accepted Answer

6–7 years

Answer

Permanent first molars typically erupt around age 6–7, earning them the name 'six-year molars.'

Question 2

Which behavior management technique involves telling a child what will happen before a procedure to reduce anxiety?

Accepted Answer

Tell-Show-Do

Answer

Tell-Show-Do involves explaining (tell), demonstrating (show), then performing (do) a procedure to reduce pediatric patient anxiety.

Question 3

Which pulp therapy is indicated for a vital primary tooth with pulp exposure confined to the coronal pulp?

Accepted Answer

Pulpotomy

Answer

Pulpotomy removes the coronal pulp while preserving vital radicular pulp tissue in primary teeth.

Question 4

What is the primary cause of early childhood caries (ECC)?

Accepted Answer

Prolonged bottle feeding with sweetened liquids

Answer

ECC is primarily caused by frequent, prolonged exposure of the teeth to fermentable carbohydrates, especially from bottle feeding with milk or juice.

Question 5

Which landmark is used to estimate the apex location for primary molar pulpectomy files?

Accepted Answer

Root length on radiograph minus 1 mm

Answer

Working length for primary molar pulpectomy is estimated from the radiographic root length minus 1–2 mm to avoid periapical tissue damage.

NDEB - National Dental Examining Board Practice Test