Questionnaire
pain
Trained research assistants interviewed children and caregivers. The questionnaires collected information regarding the sociodemographic, oral care behavior, overall health-related QOL, and OHQOL.Regarding oral healthcare behaviors, the participants were asked whether they had visited a dentist over the last 12 months owing to pain or other problems related to teeth, their frequency of brushing per day, duration of teeth brushing per occasion, and whether their caregiver had ever helped them with teeth brushing.The overall health-related QOL was evaluated using the Pediatric Quality of Life Inventory (PedsQL™ 4.0) [