Sodium Fluoride, the chemical in toothpaste and treated water, IS toxic. Please do not use anything with sodium fluoride, despite the safety reassurances from the government. (Calcium Fluoride is the "good" fluoride.)
Would you like to learn how Sodium Fluoride reached our water supply, if it is so dangerous? Here is a very informative, introductory video. You will see that the governmental agencies responsible for fluoridating our water did NOT have healthy teeth in mind! Still today, people fight their cities to keep fluoride out of the water. It is a toxic chemical, and there is no reason at ALL to consume it.
The Fluoride Deception:
Your mother and brother should be commended! Thank them for me, and thank you too for caring enough about your health to ask the question!