Figure 2From: Alzheimer's disease - a neurospirochetosis. Analysis of the evidence following Koch's and Hill's criteria Association of oral invasive periodontal Treponema (T.) spirochetes with Alzheimer's disease. Using species specific PCR and antibodies six of seven periodontal pathogen spirochetes analyzed were detected in the brains of AD patients [96], (Table 1). The association of oral Treponemas with Alzheimer's disease is statistically significant [96], (Table 1).Back to article page