Vacuum Porcelain Furnace

This dental porcelain furnace is primarily used for the processing and fabrication of dental porcelain powder. With its four-sided heating chamber, it offers a more uniform temperature field compared to traditional muffle furnaces and crystallization furnaces, resulting in better uniformity in the transparency of the fired dental crowns. The heating elements utilize imported alloy resistance wires, and the working chamber is pure operation is facilitated by a true-color touchscreen that is simple and intuitive, effectively enhancing production efficiency. This dental porcelain furnace is an ideal equipment for dental prosthesis processing factories.

Product Features
• Precise Temperature Control: It employs an advanced temperature control system to ensure uniform and stable temperatures during the heating process, meeting the sintering requirements of different materials, thereby guaranteeing the color, transparency, and strength of the restoration.
• Vacuum Environment: It provides an oxygen-free environment during sintering, effectively preventing oxidation reactions, enhancing the quality of the restoration, reducing bubble formation, and making the porcelain body more dense.
• Intelligent Operating Interface: Equipped with an intuitive and easy-to-understand operating interface, it supports preset sintering programs for various materials, with one-click start, significantly simplifying the operation process and improving work efficiency.
• Energy-saving and Environmentally Friendly: The design focuses on energy efficiency, adopting energy-saving technologies to reduce energy consumption while ensuring work performance, in compliance with environmental requirements.
• Durable and Reliable: Made of high-quality materials, it has a sturdy and durable structure that can withstand long-term high-temperature operations, reducing maintenance frequency and extending service life.
• Safety Protection: It is equipped with multiple safety protection measures, such as over-temperature protection and power failure memory functions, ensuring the safety of operators and the stable operation of the equipment.

Technical Parameters:

Application Areas

• Dental Prosthesis Manufacturing: Used for the production of full-ceramic crowns, bridges, veneers, etc., which require good biocompatibility, aesthetics, and mechanical properties.
• Sintering of Ceramic Restoration Materials: Including sintering processes for high-strength ceramic materials such as zirconia (Zirconia) and alumina (Alumina), which are widely used in anterior and posterior tooth restorations due to their excellent physical properties.
• Porcelain-Fused-to-Metal and Non-Metal Restorations: For porcelain-fused-to-metal restorations with a metal substrate, vacuum porcelain furnaces are used to complete the sintering process, ensuring strong bonding between the metal and ceramic.
• Hot-Pressed Ceramics: Suitable for hot-press casting techniques, which can produce very precise ceramic restorations such as full-ceramic inlays and onlays.
• Research and Development: In the R&D process of dental materials, vacuum porcelain furnaces are also used to test the performance of new materials and evaluate their performance in practical applications.
• Education and Training: In dental technician training centers or academies, they serve as teaching tools to help students understand different porcelain techniques and material properties.

Application Case: Production of Zirconia Crown Restorations Using a Vacuum Porcelain Furnace

• Process Steps
• Data Acquisition: Obtain a three-dimensional digital model of the patient's mouth using an intra-oral scanner. Alternatively, take a traditional silicone impression and convert it into a digital model by the laboratory.
• Designing the Restoration: Based on the digital model, design a zirconia crown shape suitable for the patient in CAD software, ensuring correct occlusion and natural aesthetics.
• Milling the Zirconia Block: Import the designed digital model into the CAM system. Place the selected zirconia block in the CNC milling machine and automatically mill out the zirconia coping according to the design file.
• Coping Pretreatment: Clean the milled zirconia coping to remove residual milling particles. Perform sandblasting to enhance surface roughness and improve bonding strength with subsequent porcelain layers.
• Porcelain Application: Apply specialized porcelain powder in a specific ratio to the pretreated zirconia coping. Use a pipette or brush to evenly apply the porcelain powder to the coping surface, ensuring clear layers and avoiding bubble formation.
• Sintering: Place the porcelain-coated zirconia crown in the vacuum porcelain furnace. Set the appropriate sintering program, including preheating, heating rate, maximum temperature, and holding time. Start the equipment, enter the vacuum state, and begin the sintering process.
• Cooling and Polishing: After sintering, allow the crown to cool naturally to room temperature. Carefully grind and polish the cooled crown to achieve a smooth surface.
• Trial Fitting and Adjustment: Try the zirconia crown in the patient's mouth, checking occlusion and aesthetics. Make adjustments as necessary for optimal results.
• Final Cementation: Use appropriate cement to fix the zirconia crown onto the affected tooth, ensuring secure bonding.

Through these steps, leveraging the technical advantages of the vacuum porcelain furnace, a both aesthetically pleasing and functional zirconia full-ceramic crown is ultimately provided for the patient. This production method not only improves the quality of the restoration but also shortens the treatment cycle, providing a better treatment experience for patients.