The Polarstem's Triple Taper includes angles 8, 7, and which degree?

The Polarstem's Triple Taper includes angles 8, 7, and which degree?

• A. 3.2 degrees
• B. 2.5 degrees
• C. 4.0 degrees
• D. 5.0 degrees

Answer: (A)

The idea being tested is how the Polarstem’s Triple Taper is defined by three distinct taper angles. In this design, the instrument has a large taper near the handle (8 degrees), a slightly smaller middle taper (7 degrees), and a very small final taper at the tip to finish the shape. That smallest angle is 3.2 degrees. Why that one? It completes the triple-taper pattern with a gentle terminal taper that preserves the apex and gives better control when finishing the canal. The other numbers would create a different taper profile that doesn’t match the stated Triple Taper geometry.

The idea being tested is how the Polarstem’s Triple Taper is defined by three distinct taper angles. In this design, the instrument has a large taper near the handle (8 degrees), a slightly smaller middle taper (7 degrees), and a very small final taper at the tip to finish the shape. That smallest angle is 3.2 degrees. Why that one? It completes the triple-taper pattern with a gentle terminal taper that preserves the apex and gives better control when finishing the canal. The other numbers would create a different taper profile that doesn’t match the stated Triple Taper geometry.