Dental model trimmers are necessary in a dental laboratory for trimming gypsum or refractory casts. The first classification of dental model trimmers is choosing a wet, dry or combination wet/dry model trimmer. If using a dry dental model trimmer, be sure a dust retraction device is in place.
The dental retractor is an instrument that comes in use for retraction of cheeks, lips, and tongue during surgical procedures. This is to prevent trauma to the soft tissues inside the mouth