Possible association ofgenotype ofwith the severity of periodontal disease and the number of permanent teeth in dogs.

Abstract

Previous research has demonstrated thatsignificantly contributes to the development of periodontal disease in dogs.is divided into three subtypes according to the 41-kDa filamentous appendage (), defined as types A, B, and C. This study aimed to elucidate the association betweentype ofwith the number of permanent teeth, reflecting the severity of periodontal disease. Two hundred twenty-five dogs were categorized bytype as negative, type A dominant, type B dominant, and type C dominant. The stage of periodontal disease in-positive dogs increased with age, particularly in type C dominant dogs. Correspondingly, the number of permanent teeth intype C-dominant dogs was significantly lower than that of-negative dogs, suggesting there is a significant association betweentype ofand the number of permanent teeth resulting from the development of periodontal disease.