National Dental Examining Board of Canada (NDEB) Practice Exam 2026 - Free NDEB Practice Questions and Study Guide

The correct answer is option B. Acute suppurative pulpitis is a condition in which the dental pulp becomes inflamed due to infection. This can cause spontaneous throbbing pain and prolonged pain when exposed to heat. The other options, such as intermittent dull pain, transient pain to cold stimuli, and increased pain when biting down, may also be symptoms of other dental conditions, but they are not characteristic of acute suppurative pulpitis. Therefore, they are not the best choice as a characteristic symptom for this particular condition.