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.
In 1929, the first dental specialty board, the American Board of Orthodontics, was born. On a side note, the first synthetic (nylon)-bristle toothbrush was invented in 1938. Around this time, stainless steel became widely available, but using it for braces was considered somewhat controversial. It wasn't generally accepted as a material for orthodontic treatment until the late 1950s/early 1960s!