What is the working time with Bond Apatite®?

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.

How long does it take for Bond Apatite® to harden?

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.

What procedure should be followed if the material breaks when compacting?

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.

2 thoughts on “FAQ

  1. Rafik Said
    Rafik Said says:

    I used bond apatite today for the first time and it didn’t harden at all at the surgical site, and kept almost flowable about 20 minutes.
    How could that be?

  2. Augma
    Augma says:

    In order for the material to harden properly it should be used as follows:
    During activation the shaft of the syringe should be advanced until the first piston reaches the blue line. Then the cap is removed, and the material should be injected into the site. Immediately place on it a dry gauze, not too folded, simply in two layers. Then press strongly with a finger on top of the gauze for 3 seconds, and again with a periosteal elevator for an additional 3 seconds. That’s all you need to do and the material will set instantly. It will never be hard like a stone, but it is definitely stable. During suturing, if the material breaks, place a dry gauze on it and press for one second before continuing to suture.

    If the material didn’t harden, it’s probably because the pressure with the gauze was not done immediately. As such, the crystals are soaked with blood and it will not set properly, and will be flowable.

    Please see our online course for more instructions on proper use.

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