National Dental Examining Board of Canada (NDEB) Practice Exam

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In children, what is the most common cause of fistula?

  1. Pulp necrosis

  2. Dental caries

  3. Periodontal disease

  4. Suppurative periradicular periodontitis

The correct answer is: Suppurative periradicular periodontitis

Fistula formation in children is most commonly due to suppurative periradicular periodontitis, which is an inflammation of the tissues around the root of a tooth. This can be caused by an infection, often stemming from untreated dental caries (tooth decay). Pulp necrosis and periodontal disease are also potential causes of suppurative periradicular periodontitis, but they are not the most common cause in children. Therefore, while they may contribute to fistula development, they are not the primary driver.

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