FREE NDAEB Dental Sciences Foundations Questions and Answers

Question 1

Which of the following muscles of mastication is primarily responsible for protruding and depressing the mandible (opening the jaw)?

Accepted Answer

Lateral pterygoid

Answer

Masseter

Answer

Temporalis

Answer

Medial pterygoid

Question 2

A patient presents with creamy white, curd-like patches on their tongue and buccal mucosa that can be wiped off, leaving a reddened, tender surface. This clinical presentation is most characteristic of which oral condition?

Accepted Answer

Oral Candidiasis (Thrush)

Answer

Leukoplakia

Answer

Lichen Planus

Answer

Aphthous Ulcer

Question 3

In the development of the primary dentition, which tissue layer gives rise to the tooth enamel?

Accepted Answer

Ectoderm

Answer

Mesoderm

Answer

Endoderm

Answer

Dental Papilla

Question 4

A 7-year-old child presents for a routine check-up. You observe that they have lost their primary mandibular central incisors, and the permanent mandibular central incisors are erupting. They also have four permanent first molars. This stage of dental development is referred to as:

Accepted Answer

Mixed Dentition

Answer

Primary Dentition

Answer

Succedaneous Dentition

Answer

Permanent Dentition

Question 5

The mandible is the only freely movable bone of the skull. Which of the following landmarks is the specific part of the mandible that articulates with the temporal bone to form the temporomandibular joint (TMJ)?

Accepted Answer

Mandibular condyle

Answer

Coronoid process

Answer

Ramus

Answer

Mental foramen

Question 6

According to the principles of 'Routine Practices' in Canadian dental settings, when must hand hygiene be performed?

Accepted Answer

Before patient contact and after removing gloves

Answer

Only after removing gloves

Answer

Only before putting on gloves

Answer

Only when hands are visibly soiled