Objective To examine current situation of knowledge,attitude and practice(KAP) about oral hygiene and its influencing factors among elementary students of sixth grade in Macao Special Administrative Region of the People's Republic of China(Macau)and to provide evidences for making strategies for health education and intervention on oral health in the area.Methods Stratified cluster sampling was used to select 259 sixth grade students from 12 elementary schools proportionally in Macau and a questionnaire sur...