The aim of the present study was to determine the relationship between nitric oxide (NO) concentration/rate in the unstimulated whole saliva (UWS) and stimulated whole saliva (SWS) with the decay-missing-filled teeth (DMFT) and simplified oral hygiene (OHI-s) scores. Forty adults were included in the study. Half of the participants (n= 20) had high DMFT-OHI-s compared to the other half. UWS and SWS flow rates, initial and final pHs were also measured. NO concentrations in the UWS and SWS of high and low DMFT-OHI-s groups were determined using modified Griess reaction and NO rates were calculated. The two groups revealed no significant differences in their salivary flow rates and their
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