Dental Prophylaxis and Periodontal Treatment are Protective Factors to Ischemic Stroke Purpose-A correlation has been found between periodontal disease (PD) and stroke. This study was conducted to investigate whether dental prophylaxis and periodontal treatment reduce the incidence rate of ischemic stroke. The prevalence of periodontal disease is high but varies widely. Approximately >90% of the world population have mild to advanced PD. Recent studies have estimated that