AnyRidge "FUSE" Provisional Abutment with POP-OFF Concept
In 1992, Brunski JB. reported that an implant may have higher possibility of fibrous-intergration than osseo- integration between bone and implant surface when movements more than100um occurs on the fixture during osseointegration period. (John B. Brunski, Biomechanical factors affecting the bone-dental implant interface. Clinical Materials, Vol. 10, 153-201) Therefore, the implant is needed to be protected not to move when immediate loading is carried out. However, it is not easy to manage loading on the fixture, even when we use a resin tempo- rary with a titanium cylinder.
It was thought that it's partly because of the metal component of temporary cylinder, which can deliver excessive forces to the fixture. This is one of the reasons which make clinicians hesitate the immediate loading procedure. So it is necessary to develop a special temporary cylinder. It should be broken under the force which can lead fibrointegration or failure of osseointegration to protect the fixture. and it will be preferred if it is easy to make a temporary crown on this particular temporary cylinder.
We tried to measure the force causing movement of 100μm on a fixture which was placed securely into adequate density of bone without defect.
First, AnyRidge implants were placed into the internationally recognized standard bone block with more than 40Ncm torque force and an abutment was connected on each implant. Instron was used to measure the force to move a fixture 100μm. The average force was 220N (22.4 kgf). Therefore, If the new temporary abutment can be fractured under this force, it may protect the fixture from movement or failure.