Fig. 3From: Prevalence and severity of gingivitis in school students aged 6–11 years in Tafelah Governorate, South Jordan: results of the survey executed by National Woman’s Health Care CenterOral hygiene status according to plaque index (PI). The oral hygiene status is demonstrated using the plaque index (PI) for all students examined during the survey, the status was classified as Good, Fair and PoorBack to article page