Effectiveness of Mobile Augmented Reality (MAR) on Oral Healthcare Education for the Independent Elderly

The goal of this clinical trial is to learn the outcomes of Mobile Augmented Reality (MAR) for oral health education program in the independent elderly. The main question it aims to answer is: • Can MAR for oral health education program provide better outcomes comparing to lecture-based education program and no intervention group. The activity centers from the list will be randomly chosen and assigned to MAR, lecture, and no intervention groups. * Participants from activity centers that were assigned as MAR and lecture groups will attend one time education program. They have to finish questionnaires 3 times and receive 2 times oral examination. * Participants from activity centers that was assigned as no intervention group will not attend any education program. They have to finish questionnaires 2 times and receive 2 times oral examination.