National Dental Examining Board of Canada (NDEB) Practice Exam

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In horizontal bone loss, the pathway of inflammation is

  1. Perivascularly, into marrow space of the crestal bone

  2. Directly through the oral epithelium

  3. Through the periodontal ligament

  4. Along the tooth surface

The correct answer is: Perivascularly, into marrow space of the crestal bone

In horizontal bone loss, the pathway of inflammation is typically through the Perivascularly into the marrow space of the crestal bone. This is the most common pathway for inflammation in horizontal bone loss because it gives the inflammatory cells easy access to the alveolar bone. The other options, such as directly through the oral epithelium, through the periodontal ligament or along the tooth surface, are less common pathways and can occur in more severe cases or in combination with the Perivascular pathway. However, these options are not as common as the Perivascular pathway and therefore not the best answer.

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