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R&R's roots run deep in the dental industry. Starting in 1872, we provided supplies, instruments and furniture to dentists. Later, we continued on to develop revolutionary dental products, such as investments for casting gold dental inlays. Today, R&R is pleased to offer a variety of dental products for modeling and investing applications.

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Made in the USA

Stones & Plasters

Available direct from R&R

Designed for casting dental models that can be used to make custom trays, orthodontic appliances and mouth guards and to diagnosis for prosthetic or orthodontic treatment.​​

Tuff-Stone™ resin die stone

FiberStone™ resin die stone

Master Model™ die stone

Tuff-Stone™ die stone

Uni-Rock™ dental stone




Stones & Plasters

Available from distributors throughout North America

Find an authorized R&R dental distributor in North America for the following R&R dental stones and plasters​​.

Glastone® 3000 die stone

Glastone® dental stone

Castone® dental stone

LabStone® dental stone

OrthoStone dental stone

Ortho Plaster

Lab Plaster

Model Plaster

Duplicating Materials

Designed to produce refractory models, dental stone models, or molds for the fabrication of partial and full dentures utilizing the fluid resin casting technique.

Uniflex™ duplicating material (formerly known as Polyflex® duplicating material)

Perflex® duplicating material

Neoflex™ duplicating materials

Instaflex™ Concentrate duplicating material

Lab-Flex™ 16 silicone rubber

Lab-Flex™ dental putties

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Waxes & Resin Patterns


FlexForm™ Resin Patterns

Impression Trays
Massad® impression trays
Buy Dental Casting Materials
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