Dental Base Metal Alloy
product name, specifications and models and Classification
Product specifications and models: see labeling Classsification:
According to the rule of MDD 93/42/EEC, Annex IX, the product is for long term using device, non-active and invasive medical device, which correspond with the rule 8. So it be longs to the classification IIa.
Properties
Intended use
Dental Base Metal Alloy is intended for use in fabrication of cast or porcelain- fused-to metal crown and bridge restorations.
Operation method
Open the package to take out the metal block. Process the metal block in the XTCERA special cutting equipment for dental application. Conduct high temperature sintering on it through the XT-S series sintering furnace, and then subject it to grinding, ceramic coating and glazing by professional technicians. Finally, the finished product will be refined, implanted, and applied by the dentist to the patient
Chemical components
| Co content | 66.0±2.0% |
| Cr | 28.0±2.0% |
| Mo | 5.0±1.0% |
| Si | <1% |
| Mn | <1% |
| Fe | <0.8% |
| C | <0.8% |
| others | <2.0% |
Product description
Processed by special technology.Suitable for various types of processing system to produce metal inner crown.The denture produced by this product is non-toxic, non radioactive;excellent biocompatibility, is not easy to produce allergic phenomenon, corrosion resistance;After vacuum sintering, the color of the substrate is silver.After sintering, the ceramic has good aesthetic appearance.The produc thas the advantages of high strength, long clinical use time, simple process,good toughness and excellent wear resistance.
Base metal alloy sintering temperature
| Temperature | Gas environment | Time | Remark | |
| 1 | Room temperature (20℃) | Argon | 5 Min | Fill Argon into the crucible until it is saturated |
| 2 | Room temperature（20℃）-850℃ | 35Min | Charge slowly to ensure the saturation of Argon | |
| 3 | 850℃-1260℃ | 40Min | ||
| 4 | 1260℃-1260℃ | 60Min | ||
| 5 | 1260℃-850℃ | 35Min | ||
| 6 | 850℃-50℃ | Air | Natural air cooling |
[Shelf life of the dental base metal alloy]
When appropriately stored, the Dental Base Metal Alloy can be used 1 years after the manufacturing date.
[Storage]
Store the Dental Base Metal Alloy in the original packaging in a dry location. Store already milled Dental Base Metal Alloy in a plastic bag together with a desiccant bag.
It avoids exposure to direct sunlight.
[Transportation ways]
This product is fragile. In transit it should be handled with care, avoiding intense impact and drop impact stress. It should be placed upward. The stacking height is not allowed to be more than 6 boxes high. The stacking height of the inner box should not exceed 6 layers high. In storage the packaging should be placed upward.
[Shelf life of the dental base metal alloy]
When appropriately stored, the Dental Base Metal Alloy can be used 1 years after the manufacturing date.
[Storage]
Store the Dental Base Metal Alloy in the original packaging in a dry location. Store already milled Dental Base Metal Alloy in a plastic bag together with a desiccant bag.
It avoids exposure to direct sunlight.
[Transportation ways]
This product is fragile. In transit it should be handled with care, avoiding intense impact and drop impact stress. It should be placed upward. The stacking height is not allowed to be more than 6 boxes high. The stacking height of the inner box should not exceed 6 layers high. In storage the packaging should be placed upward.
Operation instructions
1. Place the dental base metal alloy to the die, and fix it with corresponding retaining screws.
2. When replacing the dental base metal alloy, be sure to clean the die, in order to avoid any breakage due to the uneven installation. In particular, when the alloy is transferred from the wet processing equipment to the dry processing equipment, the processing chamber shall be kept dry. When determining the processing size, please refer to the expansion ratio we provide, in order to ensure that the sinter size meets the patient's requirement.
3.For the technical parameters and instructions for fabricating specific crowns, bridges and post core, please refer to the technical guidelines we provide or the industry specifications. Details shall be paid close attention to in the operation of the processing equipment. Please refer to the technical guideline for the operation of the processing equipment.
4. The engraved crown shall be cut with cross-shaped hard alloy knife. When the processed restoration framework is removed from the dental base metal alloy , appropriate brush shall be used to clean the impurity (e.g. dust) from it. Pay attention that this product shall not be cut by laser or placed in damp environment.
Technical parameters
| Proof strength of 0.2% non-proportional extension | No less than 500MPa |
| Elongation after fracture | No less than 2% |
| E-module | No less than 200GPa |
| Density | 7.9±0.2g/cm3 |
| Vickers hardness | 270±27HV10 |
| Corrosion resistance | <200ug/cm2 |
| Solidus temperature | (1350±50)℃ |
| Liquidus temperature | (1410±50)℃ |
| Thermal expansion coefficient (CTE) (25 - 500℃) | (14.5±0.5)×10 K-6 -1 |
| Metal-ceramic bond characterization | No less than 25MPa |
| Tensile strength(RM) | ≥800MPa |
Sintering curve for Dental Base Metal Alloy
Note: This product shall be protected with Argon during the sintering.
[Warranty/Exclusion of liability]
Application-technical recommendations, whether given orally, in writing or in the course of practical training, are guidelines. Our products are subject to continuous further development. Subject to changes in handling and composition.
[Mounting to the worktable]
The mounting of the blanks is described in the Operating Instructions of the respective milling machine.
[Contraindications]
Patients allergic to CoCrMo dust. Oral infection.
Psychiatric patients or people at the risk of swallowing false denture. Patients who cannot take care of themselves.
Patients with oral mucosal ulcer etc..
Manual for Dental Base Metal Alloy porcelain for dental applications
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