periodontal disease index, a measure developed by Siguard Ramfjord in 1959 based on Russell’s Periodontal Index. The index utilizes objective measures of plaque, calculus, and observed physical characteristics of the gingiva and periodontium. Six teeth (3, 9, 12, 19, 25, 28) called Ramfjord’s teeth are selected and evaluated. Gingiva is evaluated first with the observation of changes in color, form or shape, presence or absence of stippling, and consistency, followed by measurement of gingival crevice depth.
