Abstract
The frequency of periodontal disease in humans has been studied extensively and there are several reports which indicate an individual response. However, the non‐human primates are poorly described in regard to these matters. This study describes spontaneously occurring periodontitis in a sample group of the monkey Macaca fascicularis. Ninety‐seven animals were examined, pocket depths were measured with a graded probe and one “bite‐wing” radiograph was exposed on each side. Thirty‐two mean values for greatest pocket depth and 20 mean values for greatest distance from the cementoenamel junction (CEJ) to the alveolar bone were calculated. A tooth was said to have periodontitis if one site or more had a pocket depth of at least 5 mm and a distance of at least 2 mm from CEJ to the alveolar bone. Approximately 8% of the monkeys and 1% of all teeth had periodontitis. The results suggest that the ability to develop gingivitis is rather uniform among individuals of Macaca fascicularis and. further, that their susceptibility to developing destructive periodontitis varies greatly.
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