Factors correlated to oral frailty and number of remaining teeth among 80-year-old population in Japan.

Background: Oral frailty is proposed as a new concept defined as an age-related gradual loss of oral functions accompanied by a decline in cognitive and physical functions in older adults. Additionally, the participants with ≥ 20 remaining teeth are associated with a lower risk of cognitive frailty in older adults. Herein, we aimed to examine the correlations between the high risk of oral frailty and oral conditions or health behavior in community-dwelling 80-year-old adults in Japan.

Association between periodontal disease and malignant soft tissue sarcomas.

Objective: Malignant soft tissue sarcoma (MSTS) is a rare disease, but is seen in patients undergoing orthopedic surgery. Although the association of periodontal disease with various cancers occurring in the oral cavity, gastrointestinal tract, lungs, and prostate, has been reported, the association between periodontal disease and MSTS remains unclear. This study investigated the association between periodontal disease and MSTS in patients undergoing orthopedic surgery.