What type of connection does the internal hex implant utilize to create a biological seal?

• A. Flat connection
• B. Screw connection
• C. Conical connection
• D. Swagged connection

Answer: (C)

The internal hex implant employs a conical connection to achieve a biological seal. This design is integral to enhancing stability and ensuring a snug fit between the implant and the abutment. The conical shape facilitates the interlocking of components, reducing micro-movement and minimizing the risk of bacterial infiltration, which is critical for maintaining the integrity of the biological seal around the implant.

Additionally, this type of connection promotes a more significant force distribution, which helps to prevent mechanical complications over time. The conical design also offers advantages in terms of ease of placement and alignment during surgery, contributing to a more favorable clinical outcome.

Other types of connections, such as flat or screw connections, do not provide the same level of tightness and may lead to gaps that can compromise the biological seal. A swagged connection, which often involves a crimping or deformation process, may not offer the same snug interface as a conical connection, thereby affecting the overall effectiveness of the implant in providing a proper seal.