Rapid Set ™ is a fast setting polymer with ultra-low viscosity it pours like water and yields a virtually void free model. No vibrating is necessary. It is a convenient one to one mix ratio. Fully cured castings are tough, durable and give off minimal dust. Thin models don't fracture.

Material	Rapid Set™ - 5 min	Rapid Set™ - 15 min
Work Time	25 sec	50 sec
Ideal User	In Office	Laboratory
Shrinkage	> .005%	> .005%
Expansion	Zero	Zero
Surface Hardness	Abrasion Free	Abrasion Free
Color*	Light Blue	Light Orange

*Custom Colors Available

Material	Stone	Epoxy	Rapid Set™
Set Time	< 2 hours	¾ - 2 hours	5-15 min
Trimming	Easy	Gums up	Easy
Shrinkage	zero	≈ 0.2%	> .005%
Expansion	0.08% to 0.3%	Zero	Zero
Surface Hardness	Relatively soft	Hard	Abrasion Free
Fracture resistance	Relatively poor	Very durable	Very durable
Cost	$0.50 - $0.75 per model	≈ $5.00/model	$0.60/average model
Thick base needed	Yes	No	No

The fast curing times allows vacuum - formed appliances to be fabricated within 20 minutes, without trimming the model. The dentist can deliver mouthguards, occlusal guards or bleach trays in one visit saving chair time and any inconvenience to the patient.

Fracture, expansion, and abrasion free dies.

Powder Free Scanning - Use with white light or laser scanners without the need for a powder or spray. Resulting in more accurate scans.

Whats wrong with plaster expansion?

With conventional pin models (on a plaster base), several types of expansion act simultaneously. Firstly, when fabricating arch-shaped models, the plaster's linear expansion in the outer areas is approximately three times greater than in the inner areas. This results in serious dimensional changes. Secondly, plaster expansion during subsequent fabrication of the plaster base (full model) progresses uniformly and three-dimensionally from the centre of the model outwards, and thus has an additional effect on the pin model, in this case a negative effect.


Dental arch	Plaster Base (full model)	Dental arch on the plaster base

(Wilhelm H. Kiefer: "Mit Grips an den Gips" published by Quintessenz Verlag)

Product ID	Name	Options	Price
64135	Rapid Set (2 x 16oz)	5 min 15 min - Crown & Bridge	$38.00
64125	Rapid Release		$5.00
64124	RS Putty 1lb		$26.00

A Simplified Custom Impression Technique:
[htm] [PDF]

Steven J. Sadowsky, DDS
University of Southern California School of Dentistry, Los Angeles, Calif
Copyright © 2005 by The Editorial Council of The Journal of Prosthetic Dentistry. 2005;94:468-9
Reprinted with permission from Steven J. Sadowsky, DDS

Fabrication of a custom impression tray using a thermoplastic material as the tray spacer

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Whats wrong with plaster expansion?