DDS Trivia 5

Question 1

Which nerve must be anesthetized to achieve pulpal anesthesia of the maxillary molars during routine dental procedures?

Accepted Answer

Posterior superior alveolar and middle superior alveolar nerves

Answer

Maxillary molar pulpal anesthesia requires the posterior superior alveolar nerve (for roots) and often the middle superior alveolar nerve (for mesiobuccal root and surrounding tissue).

Question 2

What is the primary buffer system in saliva that resists pH changes caused by bacterial acids?

Accepted Answer

Bicarbonate buffer system

Answer

The bicarbonate buffer system is the dominant buffering mechanism in stimulated saliva, neutralizing acids produced by cariogenic bacteria to protect enamel.

Question 3

Which type of bone graft uses bone harvested from the same individual receiving the graft?

Accepted Answer

Autograft

Answer

An autograft (autogenous bone graft) uses bone harvested from the patient's own body (e.g., chin, ramus, iliac crest) and is considered the gold standard for bone regeneration.

Question 4

Which condition is characterized by failure of cementum to cover the root apex, resulting in exposed dentin at the apex?

Accepted Answer

Cemental aplasia

Answer

Cemental aplasia refers to absent or deficient cementum at the root apex, leaving dentin exposed and potentially causing hypersensitivity or periodontal vulnerability.

Question 5

How many permanent teeth are in a full adult dentition, including third molars?

Accepted Answer

32

Answer

A complete adult dentition consists of 32 permanent teeth: 8 incisors, 4 canines, 8 premolars, 8 first and second molars, and 4 third molars (wisdom teeth).

DDS - Doctor of Dental Surgery Practice Test

DDS - Doctor of Dental Surgery Practice Test

DDS Trivia 5