Lithium Disilicate Glass Ceramics
Lithium disilicate blocks are made from excellent raw materials and support fine craftsmanship, natural translucency, strong flexural performance, and stable processing for chairside CAD/CAM dental restorations.
[ Indications ]
Veneer
Inlay
Onlay
Anterior crown
Posterior crown
Monolithic Bridge(<=3 Units)[ Product Highlights ]
High translucencyNatural optical performance helps restorations blend with surrounding teeth.
Easy to millSupports simple CAD/CAM processing for same day restorations.
High strength637 MPa average biaxial bending strength after full crystallization.
Fast restorationStable crystallization curve supports efficient chairside workflow.
[ Properties ]
Physical Properties
| Density (g/cm3) | 2.4-2.7 |
| Vickers hardness (MPa) | 5400 +/- 400 |
| Fracture toughness (MPa*m1/2) | 2.55 |
| Coefficient of thermal expansion (10^-6 K^-1) | 9.8 +/- 0.5 |
| Crystallization temperature (C) | 830-840 |
| Chemical solubility (ug*cm-2) | 30.3 |
| Radioactivity (Bq/g) | <0.019 |
Chemical Composition
| SiO2 | 61%-71% |
| Li2O | 11%-17% |
| ZrO2 | 1%-5% |
| Other oxides | 6%-30% |
[ Biological Properties ]
| Cytotoxicity test | Cytotoxicity level 0 |
| Short-term systemic toxicity test (oral route) | No systemic toxicity |
| Sensitization test | No sensitization |
| Hemolysis test | Hemolysis rate <5% |
| Ames test | Negative for mutagenesis |
| Oral mucosa irritation test | No oral mucosa irritation |
| Subchronic Systemic Toxicity Test | Not cause subchronic systemic toxicity |
[ Bending Strength ]
The average biaxial bending strength is 637 MPa after full crystallization, higher than the standard strength value set by ISO 6872:2015 for Dentistry-Ceramic Materials. Its superior strength can be used to make three-unit bridge in the area of molar.
[ Crystallization Curve ]
| Crystallization Procedure | Starting Temp. | Drying Time | Heating Time | Holding Temp. | Holding Time | Furnace Opening Temp. | Vacuum -on | Vacuum -off |
| 400 C | 180s | 40 C/min | 840 C | 7min | 700 C | 550 C | 840 C |
[ CAD/CAM Shade ]
| Colors | Opacity | Shade-Bleach | Shade-A | Shade-B | Shade-C | Shade-D | ||||||||||||||||
| Translucency | MO-0 MO-1 MO-2 MO-3 MO-4 | BL1 | BL2 | BL3 | BL4 | A1 | A2 | A3 | A3.5 | A4 | B1 | B2 | B3 | B4 | C1 | C2 | C3 | C4 | D2 | D3 | D4 | |
| MO | Available | v | v | v | v | v | v | v | * | v | v | v | * | v | v | v | v | v | * | v | v | * |
| MT | Available | v | v | v | v | v | v | v | * | v | v | v | * | v | v | v | v | v | * | v | v | * |
| LT | Available | v | v | v | v | v | v | v | * | v | v | v | * | v | v | v | v | v | * | v | v | * |
Note: v stands for available colors. * stands for order preparation.
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