The first ADA approved fluoride toothpaste in the year:
In 1955, the stannous fluoride dentifrice became the first dentifrice recognized by the Food and Drug Administration (FDA) as an effective tooth decay preventive product. 
The first fluoride dentifrice was accepted by American Dental Association (ADA) in 1964. It is called CREST.

Essentials of preventive and community dentistry
Soben Peter
5th edition
page no. 261
1960
1968
1964
1954