It is firm for easy introduction into the root canal yet flexible to follow the curves of the canal.
When chlorhexidine comes into contact with moisture it releases cations which combine with the anionic molecules on the surface of the cell walls of the bacteria causing osmosis to malfunction.
(Petereit & Kirch, W., 1998). Chlorhexidine is more soluble than calcium hydroxide for example.
Due to electrostatic bonding and interactions the cations adhere to the dentine, to the enamel and within the oral cavity (Arends & David, 1998).
Activ point has been specially developed for the conditions in the root canal.
The canal is so small that there is not even room for a drop of water.
The majority of the space is taken up by the activ point, so the relationship of CHX to moisture allows a minimal inhibition concentration .
Duration:1 – 3 weeks.
The point should then be changed or the canal permanently filled in the usual manner.
In certain clinical situations the point should be replaced at shorter intervals (after 2 – 3 days).
Removal of activ point: The stability of activ point is not affected by the release of chlorhexidine in moisture.
It can easily be removed with tweezers or a probe even after 3 weeks.
No residue is left in the canal.
Activ point for temporary root canal filling and prevention of reinfection.
The ISO shaped points have a guttapercha matrix with 5% chlorhexidine diacetate and are radiopaque.
Chlorhexidine has been used effectively in dentistry for many years and is known to be highly effective against bacteria and many organisms, including yeasts and fungi, even in low concentrations.
Roeko’s innovation, activ point, provides a means for applying chlorhexidine directly into the root canal.