Prevalence and Associated Factors of High BMI and Periodontitis in Thai Adults Aged Under 60 Years

This cross-sectional study will be conducted among Thai adults aged 18-59 years attending the Dental Hospital, Faculty of Dentistry, Mahidol University (Phayathai Campus). Eligible participants will undergo anthropometric and periodontal assessments and complete an interviewer-administered questionnaire. Anthropometric assessment will include body weight, height, body mass index (BMI), and waist circumference. BMI will be classified according to the Western Pacific Region (WPRO) criteria. Periodontal examination will include probing pocket depth (PPD), clinical attachment level (CAL), bleeding on probing (BOP), gingival index (GI), and plaque score. Periodontal status will be classified as clinical gingival health/gingivitis or periodontitis according to the 2017 AAP/EFP classification. Information on sociodemographic characteristics, medical conditions, smoking, alcohol consumption, sleep duration, and other health-related factors will also be collected. The study will examine the prevalence of high BMI and periodontitis and explore factors associated with these conditions in this population.