Balance of Salyvary pH by Brushing Teeth before and after Food Intake

The aim of this comparative study was to establish the time of salivary pH stability in pre-school children as the procedure of brushing with fluoride paste of 400-500ppm before and / or after food intake was developed to establish preventive measures. This research was conducted in a study group of 30 children from 4 to 5 years of a daycare center, in which a splitting was performed in 3 groups, each of 10 children. Group1: Brushing before and after the snack. Group 2: Brushed post Snack ingestion. Group 3: Brushed pre snack intake. In the 3 groups, the salivary pH was measured with salivary test, obtaining the initial pH, then they were subjected to the different situations of brushing by group, taking samples immediately after the different brushes and then samples every 15, 30, 40, 60 and 180 minutes after the food intake. All the samples were taken to the laboratory to be measured with a pH metro. Samples of saliva were also collected on an empty stomach.

As a result it was obtained that in the 3 brushing procedures salivary pH tends to stabilize towards alkalinity, having a balance point at 40 min. The pre-brushing process tends to rise to stay in higher alkalinity; the other procedures of heading, present a curve of stability throughout the follow-up until 2 hours of compliance.

Concluding we have that the fasting salivary pH is neutral; If we use any brushing procedure whether pre, pre and post or post food intake, it will always have the tendency to improve the initial pH; a pH balance is shown at 40 min; the pre and post brushing is the one that best maintains the balance of the salivary pH, continuing in descending order the procedure of the pre brushing and finally the post brushing procedure.