Although cases like Katzenbach and Heart of Atlanta Motel stretched Congress' power to regulate under the Commerce Clause, United States v. Lopez, 514 U.S. 549 (1995) restricted the Commerce Clause's reach.
Toothbrushes have been around for hundreds of years. In fact, the first known toothbrushes were used about 5,000 years ago and were made of twigs. The Prophet Mohammed introâ¦duced the use of the miswak (toothbrush) to the middle east about 1,300 years ago.
1 Do not use human toothpaste â it is not designed to be swallowed. 2  Once your dog has accepted the taste of pet toothpaste, apply a small amount to the cloth and rub it over the teeth. 3  Once your dog is completely used to you rubbing his teeth with a cloth, itâs time to start using a toothbrush.