Description

JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece

• Brand: JOSOI — professional high-speed dental handpiece for routine clinical procedures
• Large-head design for stable turbine performance and efficient cutting power
• Shadowless LED illumination for clearer visibility around the bur tip
• Triple water spray cooling system for effective temperature control during high-speed cutting
• Double-pattern exterior design for improved grip stability and visual recognition
• Metal body structure for durability and repeated clinical sterilization
• Push-button bur release for fast and convenient bur replacement
• Available with 2-hole and 4-hole connection interfaces
• 320,000–350,000 RPM high-speed turbine performance
• Compatible with 135°C high-temperature autoclave sterilization

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Description

The JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece is designed for dental professionals who need strong cutting stability, reliable illumination, and efficient cooling in daily clinical treatments.

This model features a large-head turbine structure, shadowless LED illumination, a triple water spray cooling system, and a double-pattern exterior design. The large head supports stable high-speed cutting performance, while the LED lighting system helps improve visibility at the bur tip and reduce shadow interference during operation.

The triple water spray system directs cooling water toward the cutting area from multiple angles, helping reduce heat generation and remove debris during cavity preparation, crown reduction, restorative adjustment, and other high-speed dental procedures.

With a working air pressure of 0.22–0.25 MPa and a speed range of 320,000–350,000 RPM, this JOSOI handpiece provides efficient turbine performance for routine clinical use. Its metal body, push-button bur release, 2-hole / 4-hole interface options, and 135°C autoclave compatibility make it a reliable choice for modern dental clinics. Product specifications are based on the uploaded product document.

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Feature

• The large-head design provides stable turbine rotation and strong cutting performance, making the handpiece suitable for procedures that require efficient tooth preparation and consistent cutting force.
• The shadowless LED illumination system improves visibility near the bur tip, helping clinicians observe the operative field more clearly during angled cutting, margin refinement, and deep preparation areas.
• The triple water spray cooling system delivers water from three directions around the bur, helping reduce heat buildup during high-speed cutting and protecting tooth structure from excessive temperature rise.
• The multi-directional spray also helps flush away tooth debris and restorative particles, keeping the operative field cleaner and easier to observe.
• The double-pattern exterior design provides enhanced surface texture for improved handling and better grip control during wet or long procedures.
• The push-button bur release allows fast bur replacement without additional tools, helping improve chairside efficiency and reduce treatment interruption.
• The 2-hole and 4-hole connection options provide compatibility with common dental unit interfaces.
• The metal body offers strong durability, structural stability, and reliable performance through repeated sterilization cycles.
• The low noise level of ≤60 dB helps support a more comfortable clinical environment for both patients and dental professionals.

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JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece — Specifications

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Working Principle

The JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece operates through a pneumatic turbine system. Compressed air enters the handpiece through the 2-hole or 4-hole connection interface and drives the internal turbine rotor. Under the recommended working air pressure of 0.22–0.25 MPa, the turbine reaches a rotational speed of 320,000–350,000 RPM.

The dental bur is secured by the push-button chuck mechanism. When the turbine rotates at high speed, the bur performs cutting, preparation, or adjustment on tooth structure and restorative materials. The large-head structure supports stable turbine movement and helps maintain consistent cutting performance during clinical operation.

The LED illumination system provides direct light near the bur tip, improving visibility in the working area. This is especially useful when the handpiece is used at different angles or in deeper areas of the oral cavity where external light may be partially blocked.

At the same time, the triple water spray system delivers cooling water from three directions around the bur. This helps cool the bur and tooth surface, reduce thermal buildup, and remove debris from the cutting area. The combination of high-speed turbine rotation, LED illumination, and triple water spray cooling supports efficient, clear, and controlled clinical operation.

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Clinical Practice of the JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece

1. Pre-Operative Setup

• Inspect the handpiece body, large head, LED light area, spray outlets, and connection interface before use.
• Confirm that the selected dental bur has a shank diameter of Φ1.595–1.600 mm.
• Insert the bur fully into the chuck and confirm secure bur retention before operation.
• Connect the handpiece to the appropriate 2-hole or 4-hole dental unit interface.
• Confirm that the working air pressure is within the recommended range of 0.22–0.25 MPa.
• Run the handpiece unloaded for several seconds before intraoral use to check turbine rotation, LED illumination, triple water spray output, and operating sound.

2. Intraoperative Management

• Use the LED illumination to improve visibility during cavity preparation, crown reduction, restorative adjustment, margin refinement, and other high-speed procedures.
• Maintain light and controlled cutting pressure. Excessive pressure may reduce turbine speed, increase heat generation, and shorten the service life of the bearings.
• Keep the triple water spray active throughout cutting to reduce thermal buildup and improve debris clearance.
• Use the double-pattern grip area to maintain stable hand control during angled operation or longer procedures.
• Monitor the operating sound during use. Normal operation should remain at or below 60 dB.
• Stop operation immediately if abnormal vibration, unstable bur rotation, reduced water spray, or unusual noise occurs.
• Replace the bur only after the turbine has fully stopped.

3. Post-Operative Maintenance

• Remove the bur after the procedure using the push-button release.
• Flush the handpiece air and water lines after use to remove residual water, debris, and contaminants.
• Clean the external surface of the handpiece, especially around the head, LED area, triple spray outlets, and textured grip area.
• Check the spray outlets regularly to prevent blockage and maintain balanced cooling performance.
• Lubricate the handpiece according to the manufacturer’s maintenance protocol before sterilization.
• Sterilize the handpiece using 135°C high-temperature autoclave sterilization.
• After sterilization, allow the handpiece to dry completely before storage or reuse.

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The Function of the JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece

The JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece is used for high-speed dental cutting in routine clinical procedures. Its main function is to drive standard dental burs at 320,000–350,000 RPM for cavity preparation, crown preparation, restorative adjustment, occlusal reduction, and other procedures requiring efficient removal of tooth structure or restorative material.

The large-head design provides stable turbine operation and strong cutting efficiency, making it suitable for clinical situations where consistent cutting power is required. The shadowless LED illumination helps clinicians maintain better visibility around the bur tip and treatment area, especially when working in narrow or deep intraoral spaces.

The triple water spray cooling system plays an important role in temperature control. During high-speed cutting, friction can quickly generate heat. The three-directional water spray helps cool the bur and tooth surface while flushing away debris, supporting safer and cleaner operation.

The double-pattern exterior design improves handpiece control by providing a more secure grip surface. Combined with the metal body and push-button bur release, this handpiece supports efficient chairside workflow and reliable daily clinical use.

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Important Notes for Using the JOSOI Triple-Spray Large-Head Shadowless LED High-Speed Handpiece

1. Always confirm that the working air pressure is within 0.22–0.25 MPa before operation.
2. Use only burs with a shank diameter of Φ1.595–1.600 mm.
3. Do not operate the handpiece without a bur properly installed.
4. Always keep water spray active during cutting to prevent excessive heat buildup.
5. Check the three water spray outlets regularly. Blocked outlets may reduce cooling efficiency and affect cutting safety.
6. Do not press the push-button bur release while the turbine is still rotating.
7. Inspect the LED light before use. If the light is weak, unstable, or not working, check the handpiece before clinical operation.
8. Clean the head area, LED area, and spray outlets carefully after each use.
9. Lubricate the handpiece according to the recommended maintenance procedure before sterilization.
10. Sterilize the handpiece at 135°C using high-temperature autoclave sterilization.
11. After sterilization, inspect the handpiece for abnormal noise, vibration, reduced spray output, LED failure, or visible damage before returning it to clinical use.