The document discusses how periodontal disease prevalence increases with age and may be linked to declines in manual dexterity. Periodontal disease involves inflammation of gum tissues and bone loss around teeth. The main cause is a buildup of plaque that the immune system responds to inflammatorily. Completing daily oral hygiene like brushing and flossing is important for plaque removal. The review hypothesizes that age-related declines in fine motor skills and manual dexterity make thorough plaque removal more difficult, leading to increased periodontal disease in older adults over 65 years.