Which handpiece is preferred for precision finishing at slow speed?

• A. Slow straight hand piece
• B. Rubber dam frame
• C. Slow contra-angle handpiece
• D. Air turbine handpiece

Answer: (C)

For precision finishing at slow speed, control and access are essential. A slow contra-angle handpiece gives you that balance: the gearing slows the bur to a comfortable, controllable pace while increasing torque, which reduces the risk of slipping and heat buildup. The angled head lets you follow contours and reach into tight areas or along margins with excellent visibility, making fine, delicate finishing strokes possible.

The other options don’t fit this scenario as well. A slow straight handpiece lacks the angulation needed to access curved surfaces and margins effectively. An air-turbine handpiece runs at very high speeds, which is not ideal for precise finishing and more likely to cause chatter and heat. The rubber dam frame isn’t a handpiece at all, so it cannot be used for finishing.