System and method for improving cement retention in implant-supported abutment

A system comprising:

• a dental implant with an internally threaded socket and an externally threaded body to be anchored in a jawbone;
• an abutment having a chamber and a coronal opening, the abutment to be placed on the implant;
• a cement-retaining abutment screw to secure the abutment to the implement, the screw comprising:
• a shaft having a head and a threaded end, the threaded end to engage the threaded socket in the dental implant, and
• an extension at the head of the shaft;
• and
• a dental restoration with an intaglio surface configured to receive the abutment, such that when cement is placed on the intaglio surface, the extension channels excess cement into the chamber.

A method for attaching a restoration to a dental implant, the method comprising:

• inserting a dental implant into a jawbone, the dental implant with an internally threaded socket and an externally threaded body;
• placing an abutment on the implant, the abutment having a chamber and a coronal opening;
• inserting a cement-retaining abutment screw into the internally threaded socket through the coronal opening of the abutment, the screw comprising:
• a shaft having a head and a threaded section, the threaded section having external threading that is adapted to engage with the threaded socket in the dental implant, and
• an extension at the head of the shaft, the extension protruding into the chamber;
• applying cement to an intaglio surface of a dental restoration, the intaglio surface configured to receive the abutment;
• and
• pressing the dental restoration onto the abutment, the extension to channel excess cement into the chamber.