W&H S-12 Angled Surgical Handpiece (1:2 Increasing Speed)

The S-12 is a 1:2 angled surgical handpiece designed for specialized oral surgical procedures that require extended reach. Configured exclusively for 70 mm Ø 2.35 mm surgical burs, the S-12 addresses niche clinical scenarios where access to deeper or more distal surgical sites is required.

With its longer bur length and angled design, the S-12 is primarily used in selected applications such as distal osteotomy, fenestration, and osteosynthesis. In most general dental and routine surgical workflows, clinicians increasingly favor shorter and more versatile alternatives such as the S-16. As a result, the S-12 is best positioned as a task-specific instrument rather than a universal surgical handpiece.

Manufactured to W&H standards, the S-12 offers reliable performance, dismantlable construction for hygiene, and predictable cutting behavior in its intended use cases.

Clinical indications

• Osteotomy in distal surgical areas

• Fenestration

• Osteosynthesis in posterior or hard-to-reach regions

Key features

• 1:2 transmission ratio for increased cutting efficiency

• Angled surgical handpiece design

• Accepts surgical burs and cutters Ø 2.35 mm

• Designed exclusively for 70 mm bur length

• Lever chuck for secure bur retention

• External spray cooling

• Dismantlable design for thorough cleaning and maintenance

• Stainless steel construction for durability and corrosion resistance

• Thermo washer-disinfectable and sterilizable

Important use note

The S-12 is a niche surgical handpiece intended specifically for use with 70 mm surgical burs. Due to the increased bur length, handling dynamics and stability differ from standard-length systems. For most routine oral surgery procedures in a dental office, shorter instruments—such as the S-16—offer greater versatility, improved control, and broader bur compatibility.

Technical summary

• Gear ratio: 1:2

• Design: angled surgical handpiece

• Bur system: Ø 2.35 mm

• Permitted bur length: 70 mm

• Cooling: external spray

• Maximum drive speed: 40,000 rpm

• Coupling system: ISO 3964 (DIN 13940)

• Dismantlable: yes