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The working time with Bond Apatite® starts when the powder is mixed with saline by advancing the plunger in the smart syringe and introducing the saline in to the premeasured BCS/HA powder chamber. At this time, the material is moldable and pliable. The best pliability is seen immediately after cement activation. Thus, it is vital to have the host site completely prepared before the activation of Bond Apatite®. After the site has been prepared, activate the cement within its smart syringe and eject it into the site. As soon as Bond Apatite® is placed in the site, it should be compressed with a dry sterile gauze pad for 3 seconds, and then the material hardens in situ immediately. The compression should be done by applying finger pressure on the gauze for 3 seconds, followed by an additional few seconds' compactions with a periosteal elevator on the gauze. Once completed, remove the gauze and continue with soft tissue closure according to the protocols.
In the oral cavity, pressing with gauze for 3 seconds generates an instant primary setting. In vitro hardening takes approximately 3-5 minutes.
As can be seen in the protocols, it is recommended to activate the cement within its smart syringe after complete site preparation, injec the cement directly into the site, and immediately place a dry sterile gauze pad above and press with a finger on top for 3 seconds. This should be followed by an additional few seconds' pressure on the gauze with a periosteal elevator.
The key to working with Augma bone cement is the attainment of a compact cohesive cement matrix prior to suturing. Thus, if the cement breaks when compacting, simply place a dry sterile gauze above, press firmly for one second, and continue.