Evaluation of the Effect of Toothcleaning Prior to Weekly Rinsing with a Dilute Solution of Sodium Fluoride

摘要

The value of prior flossing and brushing in enhancing the caries inhibition of a 0.2% aqueous solution of sodium fluoride, used weekly as a mouthrinse, was studied. A total of 964 children, age 11-13, were assigned randomly to three groups: (1) rinsing only; (2) brushing immediately prior to rinsing; and (3) flossing and brushing immediately prior to rinsing. All procedures were carried out under supervision and effectiveness of oral hygiene measures was monitored by use of an erythrocin disclosant. For children who attended 80% or more of the sessions, the DMFS surface increment after three years was 3.37 for Group 1, 3.08 for Group 2 and 2.87 for Group 3. Comparing Group 1 and 3 there was a difference of 0.5 surfaces (14.8%), with the greatest differences in proximal surfaces (0.41 surfaces or 39.4%). Although the trends were in the expected direction, none of the differences were statistically significant.