How many millimeters of taper do tapered internal hex implants have relative to the implant diameter?

• A. 0-1 mm
• B. 1-2 mm
• C. 2-3 mm
• D. 3-4 mm

Answer: (B)

Tapered internal hex implants typically have a taper that ranges from 1 to 2 millimeters relative to the implant diameter. This design feature is important for several reasons. The gradual taper allows for a more efficient insertion into the bone, reducing the risk of bone fracture during placement. Additionally, the taper helps to enhance primary stability, as it allows for greater engagement with the surrounding bone as the implant is being placed.

The slight taper also aids in the self-threading process, where the implant can engage the bone more effectively as it is rotated into position. This design aspect can lead to improved osseointegration, as it provides a favorable environment for the bone to grow into the implant surface.

Understanding the tapering of implants is crucial for clinicians as it influences the choice of implant for various clinical scenarios, particularly when considering the density and quality of the bone into which the implant will be placed.