Description

JOSOI Five-LED Shadowless Five-Spray High-Speed Handpiece

• Brand: JOSOI — professional high-speed dental handpiece for precise clinical operation
• Five-LED shadowless illumination system for brighter and wider operative visibility
• Five-point water spray cooling system for efficient temperature control during high-speed cutting
• Metal body structure for durability and repeated clinical sterilization
• Push-button bur release for quick and convenient bur replacement
• Available with 2-hole and 4-hole connection interfaces
• 320,000–350,000 RPM high-speed turbine performance
• Low operating noise level of ≤60 dB
• Compatible with Φ1.595–1.600 mm standard dental burs
• Supports 135°C high-temperature autoclave sterilization

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Description

The JOSOI Five-LED Shadowless Five-Spray High-Speed Handpiece is designed for dental professionals who require excellent illumination, stable cutting performance, and efficient cooling during high-speed clinical procedures.

This model features a five-LED shadowless lighting system, providing bright and wide illumination around the bur tip. Compared with ordinary single-light handpieces, the five-LED structure helps reduce directional shadows and improves visibility when the handpiece is used at different angles inside the oral cavity. This makes it suitable for cavity preparation, crown reduction, margin refinement, restorative adjustment, and other procedures where clear visual control is important.

The five-point water spray cooling system directs water toward the cutting area from multiple positions. This helps reduce heat buildup during high-speed cutting and improves debris removal around the bur and tooth surface. With a working air pressure of 0.22–0.25 MPa and a speed range of 320,000–350,000 RPM, the handpiece delivers efficient turbine performance for routine dental treatment.

Its metal body, push-button bur release system, 2-hole / 4-hole interface options, and 135°C autoclave compatibility make it a reliable instrument for modern dental clinics. Product specifications are based on the uploaded product document.

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Feature

• The five-LED shadowless illumination system provides bright, multi-directional light around the bur tip, helping clinicians maintain clearer visibility during high-speed cutting.
• The multi-light design helps reduce shadows caused by tooth structure, handpiece angle, bur position, or limited intraoral access.
• The five-point water spray cooling system delivers water from multiple directions around the bur, helping control temperature more effectively than single-point spray designs.
• The multi-directional spray pattern helps flush away tooth debris and restorative particles, keeping the operative field cleaner and easier to observe.
• The metal body provides strong structural stability, durability, and resistance to repeated cleaning and sterilization cycles.
• The push-button bur release system allows fast bur replacement without additional tools, improving chairside workflow and reducing treatment interruption.
• The 2-hole and 4-hole connection options provide compatibility with common dental unit interfaces.
• The low noise level of ≤60 dB helps create a more comfortable treatment environment for both patients and dental professionals.

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JOSOI Five-LED Shadowless Five-Spray High-Speed Handpiece — Specifications

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Working Principle

The JOSOI Five-LED Shadowless Five-Spray 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 system. When the turbine rotates at high speed, the bur performs efficient cutting, preparation, or adjustment on tooth structure and restorative materials. The push-button release allows the bur to be changed quickly after the turbine has fully stopped.

The five-LED shadowless illumination system places multiple LED light sources around the head area. These lights work together to provide wider and more even illumination near the bur tip. When one light angle is partially blocked by tooth structure or bur position, the other LED sources continue to support field visibility, helping reduce shadow interference during clinical operation.

At the same time, the five-point water spray system delivers cooling water from multiple outlets around the head. This multi-directional cooling helps reduce heat generation, cool the bur and tooth surface, and remove debris from the cutting area. The combination of high-speed turbine rotation, five-LED illumination, and five-point spray cooling supports clear, stable, and efficient dental operation.

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Clinical Practice of the JOSOI Five-LED Shadowless Five-Spray High-Speed Handpiece

1. Pre-Operative Setup

• Inspect the handpiece body, 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, five-LED illumination, five-point water spray output, and operating sound.
• Make sure all LED lights illuminate normally and all spray outlets provide balanced water flow before clinical use.

2. Intraoperative Management

• Use the five-LED shadowless illumination to improve visibility during cavity preparation, crown reduction, restorative adjustment, margin refinement, and occlusal adjustment.
• Maintain light and controlled cutting pressure. Excessive force may reduce turbine speed, increase heat generation, and shorten bearing life.
• Keep the five-point water spray active throughout cutting to reduce thermal buildup and support effective debris clearance.
• Use the wider illumination field to maintain clear visual control when changing bur angles or working in deeper intraoral areas.
• 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 spray output, LED failure, 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, five-LED light area, spray outlets, and connection interface.
• Check all five spray outlets regularly to prevent blockage and maintain balanced cooling performance.
• Inspect the LED light area after cleaning to ensure no debris or scale affects illumination.
• 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 Five-LED Shadowless Five-Spray High-Speed Handpiece

The JOSOI Five-LED Shadowless Five-Spray 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 five-LED shadowless illumination system improves visibility in the operative field. Because the light comes from multiple positions around the head area, it helps reduce shadows and provides clearer observation near the bur tip. This is especially useful when working in posterior areas, deep preparations, or procedures requiring frequent angle changes.

The five-point water spray cooling system provides efficient temperature control during high-speed operation. During cutting, friction can quickly generate heat. The multi-directional spray helps cool the bur and tooth surface while washing away debris, supporting safer, cleaner, and more comfortable treatment.

The metal body provides durability for repeated daily use, while the push-button bur release system supports efficient chairside workflow. Combined with 2-hole / 4-hole connection options and 135°C sterilization compatibility, this handpiece is a practical solution for modern dental clinics.

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Important Notes for Using the JOSOI Five-LED Shadowless Five-Spray 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 all five water spray outlets regularly. Blocked outlets may reduce cooling efficiency and affect cutting safety.
6. Inspect the five LED lights before use. If one or more lights are weak, unstable, or not working, check the handpiece before clinical operation.
7. Do not press the push-button bur release while the turbine is still rotating.
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.