Table 3: Outline of Daily Events Employed in the Three-Day pH Cycling Dental Model. Simulated Saliva was Refreshed for Each event. Fresh Acid (Either 0.3% or 1% Citric Acid, pH 3.8) was Used for each Challenge

Event	Duration
Simulated Saliva #1, pH = 7.0	2 hours
Acid Challenge #1	10 minutes
Simulated Saliva #2, pH = 7.0	2 hours
Acid Challenge #2	10 minutes
Simulated Saliva #3, pH = 7.0	2 hours
Acid Challenge #3	10 minutes
Simulated Saliva #4, pH = 7.0	Overnight