The W&H Surgical Contra-Angle Handpiece WS-92 LG (1:2.7 / Ref: 30033000) is a speed-increasing surgical handpiece equipped with a self-generating Mini LED+ light source, scratch-resistant stainless steel body, and a 1:2.7 gear ratio designed for high-speed bone cutting, wisdom tooth sectioning, and oral surgery procedures.
Key Features
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Self-Generating Mini LED+ Illumination: Integrated generator powered by the motor’s air drive produces bright, daylight-quality LED+ lighting without requiring an illuminated electric motor coupling.
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1:2.7 Speed-Increasing Gear Ratio: Increases motor input speed up to $135,000\text{ RPM}$, providing rapid cutting efficiency for dense cortical bone and tooth sectioning.
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Durable Stainless Steel Body with Scratch-Resistant Coating: Ergonomic, robust outer housing resists scratches, mechanical wear, and degradation from repeated thermodisinfection and steam sterilization.
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Triple Spray Coolant System: External and internal cooling nozzles deliver continuous irrigation directly to the drill/bur contact point to prevent bone tissue overheating and osteonecrosis.
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Hexagon Coupling System: Features a secure hexagonal interface for high torque transmission during demanding surgical procedures.
Clinical Indications
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Surgical Extractions & Wisdom Tooth Sectioning: Fast crown division and root sectioning of impacted third molars.
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Bone Management & Osteotomy: Precise osteotomy, apicoectomy, bone grafting site preparation, and ridge splitting.
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Implantology Procedures: Bone preparation and surgical modification under continuous sterile saline irrigation.
Specifications
| Attribute | Detail |
| Manufacturer / Brand | W&H Dentalwerk |
| Model / Ref Number | Surgical Contra-Angle WS-92 LG (Ref: 30033000) |
| Gear Ratio | 1:2.7 Speed-Increasing |
| Max Drive Speed | $50,000\text{ RPM}$ (Motor) $\rightarrow$ $135,000\text{ RPM}$ (Bur) |
| Light Source | Mini LED+ via integrated generator ($>25,000\text{ Lux}$) |
| Cooling System | External / Internal Triple Spray (External spray clip included) |
| Coupling Interface | W&H EM-19 / ISO 3964 (INTRAmatic) with Hexagon |
| Bur Fitting | Standard FG Surgical Burs ($\varnothing 1.6\text{mm}$) |
| Sterilization | Thermodisinfectable & Steam Autoclavable ($134^\circ\text{C}$) |
