Probing Velocity: Novel Approach for Assessment of Inflamed Periodontal Attachment

Autor: Tessier, J.‐F., Kulkarni, G. V., Ellen, R.P., McCulloch, C.A.G.
Zdroj: Journal of Periodontology; February 1994, Vol. 65 Issue: 2 p103-108, 6p
Abstrakt: Little is known about the biophysicalcharacteristics of the dento‐gingival junction in response to the development or resolution of inflammation. The Toronto automated periodontal probe (TAPP) provides an estimate of the biophysical integrity of the dentogingival junction by measuring intrapocket probing velocity. Presence or absence of a plateau in displacement versus time plots were used to perform dichotomous analyses as a function of established parameters of inflammation. Plateaus were operationally defined as a 3 standard deviation reduction in the slope of the displacement versus time plot (probing velocity) and hence the plateau represents an increased resistance of the probe tip at the dento‐gingival junction. The aim of the study was to measure the relationship between post‐treatment reductions of gingival inflammation and the probability of plateau formation as measured by the TAPP. Twenty‐nine subjects exhibiting gingival inflammation were provided with periodontal therapy consisting of subgingival scaling and root planing. Over a 2‐month sampling period, 6 sites from each subject were monitored and these sites exhibited wide variations of inflammation. Logistic regression revealed a significant relationship between the probability of plateau formation and treatment (P= 0.002), plaque index (P= 0.002), the increased severity levels of gingival index (P>0.05), or bleeding index (P>0.05). The probability of plateau formation decreased with higher levels of crevicular fluid flow but there was no dependence of plateau formation on probing depth (P>0.55). These data indicate a direct relationship between improved measures of clinical health and increased resistance to probe penetration near the base of the pocket. The improved clinical health is reflected by the increased probability of plateau formation in the terminal segment of the probing velocity plot. We conclude that the TAPP can detect gain of biophysical integrity at the dento‐gingival junction that is induced by non‐surgical periodontal therapy. J Periodontol 1994;65:103–108.
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