Parachute chain is an alternate term for which drill?

• A. Gates Glidden drill
• B. Paper points
• C. Tapered diamond bur
• D. Tripple Tray

Answer: (A)

In endodontics, preparing and widening the coronal part of the root canal to create straight-line access is essential before deeper instrumentation. The drill used for this coronal flaring is the Gates Glidden drill. Its flame-shaped cutting head and long tapered shaft are designed to remove dentin efficiently in the coronal third, allowing subsequent files to follow the natural canal path with less resistance and reducing the chance of ledges or blocks. That makes it the best match for the term parachute chain, which refers to this instrument in some contexts.

The other items have different uses: paper points are for drying the canal, a tapered diamond bur is typically used for external or broader internal shaping and finishing, and a triple tray is an impression tray used for taking dental impressions.