We evaluated how the interval of Qral health check − ups affects oral health promotion in the workplace for 27 males and 132 females who received oral health check − ups for over 10 years . The findings from the initial and most recent check ・ ups were compared for each group 、 We found that the number of subjects whose check − up interval was Iess than two years showed an increase in CPI ( Community Periodontal Index ) code O compared with other groups , while they showed a decrease in cQdes 3

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... and 4 . As the interval of the check − ups increased , the oral health was poorer , In particular , periodontal status worsened in the subjects whose check − up interval was greater than 5 years . On the other hand , there was no relatbnship between the DMFT index and check − up interval . Based on these results , we concluded that the interva 【between oral health check − ups for workers shou [ d not exceed 2 years in order to maintain good oral health . Shika lgaku ( J Osaka Odo 耐 ol Soc ) 2009 Jul1; 72 ( 2 ) : 77 − 84.