“…B) Although the inflammatory state in the oral cavity may be related to a brain degeneration syndrome such as dementia and AD, more studies are still needed to investigate the role of periodontal bacteria and PG (multimicrobial hypothesis) in the pathogenesis and worsening of AD. Thus, it is suggested that greater care be taken with oral hygiene in individuals suffering from AD and dementia [9,13,14,23,24,33,34,36,40,50,54,55,59,62,64,67,74]. C) Periodontal disease represents a factor in the progression (exacerbation) of Alzheimer's disease via induced pathogenic bacteria, since these individuals may have poor oral hygiene care, either due to forgetfulness or poor manual dexterity.…”