1. Centers for Disease Control and Prevention (CDC) (2021). Older Adult Oral Health: Facts about Older Adult Oral Health, Centers for Disease Control and Prevention (CDC).
2. Department of Health (DH) (2024, April 24). Oral Health, Available online: https://www.elderly.gov.hk/english/healthy_ageing/personal_care/oral.html.
3. World Health Organization (WHO) (2024, April 24). Oral Health. Available online: https://www.who.int/news-room/fact-sheets/detail/oral-health.
4. National Institute of Dental and Craniofacial Research (NIDCR) (2024, April 24). Oral Health in Older Adults, Available online: https://www.nidcr.nih.gov/research/data-statistics/dental-caries/seniors.
5. World Health Organization (WHO) (2024, April 24). Ageing. Available online: https://www.who.int/health-topics/ageing#tab=tab_1.