Читать книгу Periodontics - Fernando Suarez - Страница 81

BOP has been thoroughly investigated in a number of longitudinal studies of periodontitis patients enrolled in maintenance programs. The high negative predictive value of this index makes it valuable in identifying the absence of clinical inflammation with high accuracy.⁶⁴ However, the presence of BOP does not necessarily indicate disease progression. Consequently, BOP presents with high specificity but low sensitivity. As demonstrated by Lang et al⁶⁵ in 1986 over a period of four consecutive maintenance appointments, a specific site may present with BOP in every maintenance visit, but there is still a 70% chance that this site will not lose attachment.