Stando a questa definizione Vincent ha ragione....
"Setting Time refers the amount of time that a liquid material needs to solidify.
In dental medicine, the setting time plays an important role, especially when it comes to casting materials. After the setting time has elapsed, the pressing pressure can be lifted, e.g., in the case of dental impressions. In most cases, dental materials are subject to volume changes during hardening and because of this, are particularly sensitive to faults"
http://www.checkdent.com/dental-blog/setting-time-in-dentist...