Dental labs have a lot of unique information, most of which is very critical to the operation of the lab on a daily basis.
Anatomy is important to know while considering the design of a removable appliance.
A lot of time is used up looking for supplies, then trying to find out HOW to order, WHO to order from, WHAT the contact information is as well as your account with that vendor.
Every place of business has systems in it. Having this documentation ready saves a lot of time in training. Also helps those who just forgot how something works.
You don't have to get a whole package to get a hand with something...