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The Agitation for Root Canal Irrigation


 An important aspect of root canal cleaning is just disinfection, especially at the root apex. This consists of removal of the smear layer of the dentinal wall and disinfection with sodium hypochlorite solution in the apical delta.

Normally, dentists perform positive pressure irrigation using a syringe for root canal irrigation. They use saline solution, hydrogen peroxide solution, EDTA, or sodium hypochlorite solution as the cleaning solution.

If the needle is thin enough to rinse deep into the root canal, dentists will usually feel that can clean the root canal. However, the reality is that the cleaning is not satisfactory.

This is because only positive pressure irrigation makes it difficult to exert the chemical action of the irrigants. In particular, a narrow path such as the apical delta is difficult for the cleaning solution to reach.

Therefore, it will be necessary to use some other method in addition to positive pressure washing. The agitation of root canal irrigation is.


The most common method would be ultrasonic cleaning of the root canal using a metal endodontic tip. This is considerably more effective than positive pressure irrigation alone.

However, I am concerned that the metal endodontic tip may inadvertently cut the dentinal wall and there is a risk of fracture of the endodontic tip itself.

So I use the EndoActivator exclusively. This is because the tip is made of soft plastic and does not damage the dentinal wall. It is cordless and easy to use. The effect of agitating the cleaning solution in the root canal is easy to achieve.

The EndoActivator uses sonic instead of ultrasonic. The cavitation effect is not expected to be as good as that of ultrasonic irrigation. However, you need not worry because studies have shown in papers that it is an excellent device for root canal irrigation.


If you want to improve the quality of your root canal irrigation procedure, I think the Endo Activator will be useful for you.



[The Endo Activator is a sonic irrigating device developed by Dr. Ruddle.]

<Reference and Introduction>

☞ ENDODONTIC DISINFECTIONThe Sonic Advantage

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