FREE NBDE Dental Anatomy and Occlusion Questions and Answers

Question 1

A patient presents with a malocclusion where the mesiobuccal cusp of the maxillary first molar is positioned anterior to the buccal groove of the mandibular first molar.
Additionally, their maxillary central incisors are retroclined and there is a deep overbite.
According to Angle's classification, which of the following best describes this presentation?

Accepted Answer

Class II, Division 2 Malocclusion

Answer

Class I Malocclusion

Answer

Class II, Division 1 Malocclusion

Answer

Class III Malocclusion

Question 2

Which of the following represents the most common eruption sequence for the permanent maxillary teeth?

Accepted Answer

First Molar, Central Incisor, Lateral Incisor, First Premolar, Second Premolar, Canine, Second Molar

Answer

Central Incisor, Lateral Incisor, First Molar, Canine, First Premolar, Second Premolar, Second Molar

Answer

First Molar, Central Incisor, Lateral Incisor, Canine, First Premolar, Second Premolar, Second Molar

Answer

Central Incisor, First Molar, Lateral Incisor, First Premolar, Canine, Second Premolar, Second Molar

Question 3

During a lateral excursive movement to the right, a patient's right canine is the only tooth that contacts its opposing tooth, causing all posterior teeth on both the right (working) and left (non-working) sides to separate. This type of occlusal scheme is known as:

Accepted Answer

Canine Guidance (Canine Protected Articulation)

Answer

Bilateral Balanced Occlusion

Answer

Group Function

Answer

Centric Relation

Question 4

The oblique ridge on a permanent maxillary first molar is a prominent feature formed by the union of which two ridges?

Accepted Answer

Distobuccal cusp's triangular ridge and the Mesiolingual cusp's triangular ridge

Answer

Mesiobuccal cusp's triangular ridge and the Mesiolingual cusp's triangular ridge

Answer

Mesiobuccal cusp's triangular ridge and the Distolingual cusp's triangular ridge

Answer

Distobuccal cusp's triangular ridge and the Distolingual cusp's triangular ridge

Question 5

A dental student is examining a patient's study models and notes an anteroposterior curve of the occlusal plane when viewed from the buccal aspect. This curve, which begins at the tip of the mandibular canine and follows the buccal cusp tips of the premolars and molars, is known as the:

Accepted Answer

Curve of Spee

Answer

Curve of Wilson

Answer

Sphere of Monson

Answer

Compensating Curve

Question 6

Which of the following anatomical features is frequently present on the mesiolingual cusp of a permanent maxillary first molar and is considered a non-functional, supplemental cusp?

Accepted Answer

Cusp of Carabelli

Answer

Oblique Ridge

Answer

Transverse Ridge

Answer

Central Fossa