 Detailed methodology Visible plaque index VPI: Presence or absence of dental plaque along the gingival margin of the upper incisors and canines Bleeding after brushing BAB: Presenceabsence of bleeding after gentle brushing with a soft toothbrush Presence of caries: Cavitated and non-cavitated lesions are registered in all teeth according to the criterion of the Public Dental Service and expressed as dmft and dmfs 