You can buy it unscented for the
laboratory side of the dental field, but some of the supply houses will not sell to entities outside of the profession. Others might require only a business license. If you look hard enough, there are some without such hassles, but they are usually peddling on eBay, etc.
Here's an example of the lab stuff:
https://www.pearsonlab.com/catalog/p...3906&pid=50609