Specialist Questions

Category: Technique Protocol

Why are Zendo’s Pathfinder files 3% while some others are 2%?

By Dr. Barry H. Korzen | Posted July 11, 2016

As with any instrument its effectiveness is based on a combination of flute design and taper. Hand stainless steel files have a 2% taper and therefore the natural progression for the next instrument would be a 3% taper. Ultimately we want to instrument the canal to a minimum 4% taper therefore combining a 3% taper with an effective flute design speeds up the entire instrumentation process.

The use of rubber dam during endodontic treatment has been deemed a necessity. But is there scientific evidence to back this up?

By Dr. Barry H. Korzen | Posted November 18, 2014

The use of rubber dam during endodontic treatment has been deemed a necessity. But is there scientific evidence to back this up?

For Direct Pulp Capping, do you recommend using MTA or Calcium Hydroxide?

By Dr. Barry H. Korzen | Posted October 7, 2014

Even though Calcium Hydroxide (CH) has historically been the pulp capping agent of choice, in an excellent paper published on the Journal of Endodontics’ website on September 14, 2014 Mente et al addresses this question. Their paper reports on a controlled, historic cohort study project where potential prognostic factors were evaluated.

Is Photodynamic Therapy Effective in Root Canal Disinfection?

By Dr. Barry H. Korzen | Posted July 24, 2014

I have seen a number of advertisements for equipment that uses photodynamic therapy for root canal disinfection. Are they effective and should I consider incorporating this technology into my practice?

Interview with Dr. John T. McSpadden on Instrument Design and Technique Protocol (Part 4)

By Dr. Barry H. Korzen | Posted April 18, 2014

In this, the fourth part of an interview with Dr. John McSpadden, he answers the question “Do you have a preference between rotary and reciprocation, and if so why?”

Interview with Dr. John T. McSpadden on Instrument Design and Technique Protocol (Part 3)

By Dr. Barry H. Korzen | Posted April 4, 2014

We know that debris formed during canal preparation and then forced through the apex could lead to an inflammatory reaction and prolonged pain for the patient. Is there a way to reduce, or even eliminate, the possibility of this happening?

Interview with Dr. John T. McSpadden on Instrument Design and Technique Protocol (Part 2)

By Dr. Barry H. Korzen | Posted March 25, 2014

In Part 2 of a 4 part interview, John McSpadden suggests measures to reduce the possibility of having a procedural accident during endodontic instrumentation.