Grit
Fine
Size
50 lb
The Keystone Pumice Coarse - 5 Lb. (#0 3/4) is a dental product supplied by Keystone for dental use. Catalog code 1700010.
Keystone Pumice is a pumice from Keystone Industries.
This page carries 4 grit options: Flour, Fine, Medium, Coarse. This page carries 3 size options: 5 lb, 25 lb, 50 lb.
Find it on our Abrasives, Buffs & Brushes shelf, under Polishing Compounds & Accessories.
Orders placed before 3 PM ET ship the same day when the item is on our shelf (otherwise within 3 business days), and ground shipping is free over $10.
Product
- Manufacturer
- Keystone Industries
- Manufacturer #
- 1700017
- Item code
- 010-1490
Catalog path
- Marketplace
- Laboratory
- Category
- Abrasives, Buffs & Brushes
- Subcategory
- Polishing Compounds & Accessories
Ordering
- Status
- Ships in 3 business days
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In stock
309 sold this monthfrom $18.82
Questions
Which grit and size options are on this page?
This page carries 4 grit options: Flour, Fine, Medium, Coarse. This page carries 3 size options: 5 lb, 25 lb, 50 lb. Pick one to see its price, part number and stock.
When does it ship?
In-stock orders placed before 3 PM ET ship the same day; anything not on our shelf ships within 3 business days.Ground shipping is free over $10.
About pumice
Dental pumice is a type of volcanic glass used as an abrasive and prepared in various grits, the abrasive for the first shine on acrylic. In one published sequence denture acrylic was first polished with pumice on a wet felt cone.
A polishing agent is any material used to give lustre to a surface. Polishing is making a denture or casting smooth and glossy.
One published sequence for denture acrylic polishes first with pumice on a wet felt cone and then with rouge on a soft cloth wheel.
How polishing paste, pumice and rouge differ
- Polishing Paste — A ready-mixed polishing agent.
- Pumice — The abrasive for the first shine.
- Rouge & Tripoli — Rouge is for the final high lustre.
What to look at when choosing a polishing compound
The step: pumice comes before rouge in the published sequence.
Surface: 0.2 micrometres of roughness is considered the threshold for a clinically acceptable restoration.
Dust: the CDC names grinding and polishing castings and porcelain among the laboratory steps that put dust in the air.
Sources: The Glossary of Prosthodontic Terms, 9th edition (J Prosthet Dent 2017) · Rao et al. 2015, Surface roughness of three heat-cured acrylic denture base resins with different conventional lathe polishing techniques (J Indian Prosthodont Soc) · Does Sterilization Affect the Performance of Single-Step Resin Composite Polishers? (Dent J 2023) · CDC, Silicosis in Dental Laboratory Technicians, Five States, 1994-2000 (MMWR 53(09))
