What was an advantage of internal hex connections over external hex in dental implants?

• A. Lower production costs
• B. Wider compatibility with implant tools
• C. Ability to withstand greater forces
• D. Deeper connection depth

Answer: (D)

The advantage of internal hex connections over external hex connections in dental implants lies in their design, which allows for a deeper connection depth. This deeper connection enhances the stability and retention of the abutment to the implant. A deeper interface between the implant and the abutment can provide improved mechanical stability, reducing the risk of micro-movement and increasing the overall strength of the assembly.

This feature is particularly beneficial as it minimizes the potential for screw loosening and loss of retention over time, which can be a concern with shallower connections. Additionally, the deeper connection helps in distributing forces more evenly during mastication, contributing to the longevity and success of the implant. The internal hex design also allows for a more streamlined and compact profile, often resulting in better aesthetics and making it easier to place in various anatomical situations.

In summary, the internal hex connection's deeper engagement with the implant leads to enhanced mechanical stability and improved resistance to generated forces, promoting long-term success in dental restoration.