Respective Effects of Oral Hygiene Instructions and Periodontal Nonsurgical Treatment (Debridement) on Clinical Parameters and Patient-Reported Outcome Measures with Respect to Smoking.

Effects on Periodontal Clinical Parameters As seen in Table 2 and Figure 2 , oral hygiene instructions led to a highly significant decrease of PISA and mean BOP (%) values ( p < 0.0001) in former and non-smokers but in not in current smokers ( p = 0.94).

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