There is certainly a mouth/body connection. Having Periodontal Disease has been related to cardiovascular disease, pre-term birth in women, low sperm count in men and increased complications for those with Diabetes, to name a few. The Journal of American Heart Association just released a study stating that women over the age of 50 with gum disease is linked to higher risk of premature death.
With regular dental visits, periodontal disease screening and good home care can all reduce progression and spread of gum (periodontal) disease.
The link to the article is below:
http://www.cnn.com/2017/03/29/health/gum-disease-early-death-study/index.html