Fluoride Retention following the Professional Topical Application of 2% Neutral Sodium Fluoride Foam

Table 3

Coefficient of correlation between AAF and TRF, OF, and TSRF on deciduous and permanent dentition.

	AAF
	Deciduous dentition		Permanent dentition
	𝑟 value	𝑃 value	𝑟 value	𝑃 value
TRF	0.9282	.0001	0.8717	.0010
OF	0.9042	.0003	0.7914	.0064
TSRF	0.1680	.6426	0.4243	.2216

AAF: appropriate amount of foam, TRF: tray-retained foam, OF: overflowed foam, TSRF: tooth-surface-retained foam.