Harvest DentalShips in 3 business days
Harvest Dental Nano Zirconia ColorBlend Discs, 98.5 mm · BL1 · 12 mm
SKU 030-0164MFR# 60025-12
Shade
BL1
Thickness
12 mm
No description available yet.
Product
- Manufacturer
- Harvest Dental
- Manufacturer #
- 60025-12
- Item code
- 030-0164
Catalog path
- Marketplace
- Laboratory
- Category
- Digital Lab & CAD/CAM
- Subcategory
- CAD/CAM Blocks & Discs
Ordering
- Status
- Ships in 3 business days
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About zirconia discs and blocks
Zirconia discs and blocks are an oxide ceramic with very favourable mechanical properties, milled into crowns, implant components and multi-unit bridges. Traditional dental zirconia holds a small proportion of yttria stabiliser (3Y-TZP); it is extremely strong but has low translucency. Restorations are milled from pre-sintered blocks and then sintered at a high temperature, or machined from fully sintered blocks.
A CAD/CAM block or disc is a prefabricated piece of material from which a restoration is milled by a computer-controlled machine. The Glossary of Prosthodontic Terms defines CAD-CAM as the computer-controlled subtractive fabrication of a three-dimensional object, used to produce crowns, veneers, inlays, onlays and other prostheses. By material, a systematic review groups CAD-CAM materials into silicate ceramics, oxide ceramics, composite resins, PMMA, PEEK, polymer-infiltrated ceramic network materials and metal.
How the types of block and disc differ
- Zirconia discs and blocks — The strongest of the materials here, with aesthetics somewhat below the silicate ceramics. Milled oversize and then sintered, because it shrinks in the furnace.
- Hybrid ceramic blocks — Part ceramic and part polymer, where zirconia is all ceramic. Resin block composites can be used for permanent restorations.
- PMMA discs — A polymer for provisional work, where zirconia and hybrid ceramic are for permanent restorations.
- Wax discs — Not a final material: the milled wax is a pattern that is removed from the mould, usually by heat.
What to look at when choosing a zirconia disc
Yttria content: the cubic phase and the translucency rise with the yttria concentration. More cubic phase improves translucency and lowers strength.
Grade names: with 3 to 8 mol% yttria the material is called partially stabilised zirconia (PSZ), and at about 3 mol% it is close to fully tetragonal (TZP).
Colour: a zirconia restoration is coloured either by using a pre-coloured block or by immersing or brushing the white restoration with colouring solution.
Sintering: the optimum sintering temperature range given in the review is 1350 to 1550 °C.
Sources: Clinical Applications and Mechanical Properties of CAD-CAM Materials in Restorative and Prosthetic Dentistry: A Systematic Review (J Funct Biomater 2023) · The Glossary of Prosthodontic Terms, 9th edition (J Prosthet Dent 2017) · Revolution of Current Dental Zirconia: A Comprehensive Review (Molecules 2022) · Biofilm Formation on Hybrid, Resin-Based CAD/CAM Materials for Indirect Restorations: A Comprehensive Review (Materials 2024) · FDA 21 CFR 872.3770, Temporary crown and bridge resin · Comparison the Marginal and Internal Fit of Metal Copings Cast from Wax Patterns Fabricated by CAD/CAM and Conventional Wax up Techniques (J Dent Shiraz 2013) · FDA 21 CFR 872.6890, Intraoral dental wax · Translucent Zirconia in Fixed Prosthodontics: An Integrative Overview (Biomedicines 2023)
