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This is the area where the fixture connects directly with the screw of prosthesis. It has suitable size matching the screw of connected prosthesis and is produced to maintaion a stronger connecting force by the application of a specialized processing method
It undergoes the cleaning process to remove the remaining foregin substances
This is the area that determines the compatibility of the height & diameter of hex with the prosthesis by conatcting the inner parts of abutment
External hex diameter is comprised of the various sizes in line with the platform diameter size
The height of external hex is commonly 0.7mm
- The surface of this area contacts the surface of lower part of thesis. The platform diameter is a precision jinction area determing the compatibility with the prothesis
- It is comprised pf various sizes which are suitably select according to the location of the area and the condition of alveolar bone
- This area requires a high precision and surface roughness
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