The best toothpaste to use can depend on the state of your dental health. There are special kinds of toothpaste for sensitivity and gum disease. Your dentist will be able to recommend the best one for you. Make sure your toothpaste contains fluoride.
For children under the age of three, talk to your dentist. They can tell you if toothpaste is recommended. For kids three to six years of age, use only a small amount of toothpaste – the size of a green pea. Make sure your child does not swallow the toothpaste.

Information as per the ODA https://www.oda.ca/oral-health-basics/care-disease-prevention/brushing-flossing/
Dr. Elizabeth Dimovski Dental
Brampton Dental Office
2 Philosopher's Trail, Unit 1
Brampton, Ontario
L6S 4C9
905-458-6620
dr.elizabeth.dimovski@bellnet.ca