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Ruddle CJ. dentalCEtoday.com https://www.dentalcetoday.com

The author argues that the principles underpinning minimal invasive endodontics ('a systematic respect for the original tissue') and conventional endodontics (shaping the canal such that it can hold an 'effective reservoir of reagent that, upon activation, can be potentially exchanged into all aspects of the root canal system'), are not necessarily compatible. Although a proponent of conventional endodontics, the author champions progressively tapered files (for example ProTaper Gold®) in that they facilitate minimal canal preparation. In addition, he extolls the virtues of irrigation using the EndoActivator® system that can be used with small (#15/.02) tips to transmit the sonic energy. But there is no method to predictably fill essentially a nonintrumented canal. Disparaging, the author cites a CEO of a company that has developed noninstrumentation 3-D disinfection technology, who said: 'get anything you can to length that will produce a white line on a radiograph and the insurance company will pay.' The author has declared a financial interest in DENTSPLY Tulsa Dental Specialties that market both ProTaper Gold® and the EndoActivator® system.