A study found: losing every tooth in old age is equivalent to aging the brain by more than a year - voila! health. A decrease in the volume of brain tissue in the hippocampus region is associated with the development of dementia and Alzheimer's diseases.

The hippocampus plays an important role in the acquisition of new memories about facts and events. The findings suggest that damaged teeth with acute periodontal disease are associated with brain atrophy (the degeneration of the brain cells and its tissues)