Tooth loss and hormone use in postmenopausal women.

Nearly 32% of US women aged 65 to 69 have no teeth. Because some tooth loss may reflect systemic osteoporosis, and postmenopausal hormone therapy protects against osteoporosis, the authors examined the risk of tooth loss in relation to hormone use in a prospective study of 42,171 postmenopausal women. Overall, the risk of tooth loss was 24% lower in women who were currently using hormones, although there was little effect for women who had stopped taking hormones. This decreased risk for current hormone users was observed regardless of the duration of use and was similar for a variety of hormone preparations and doses. Although few studies have examined the issue, this research suggests that hormone therapy may reduce tooth loss.