Category: Techniques

Comparison of the Effect of Root Canal Preparation by Using WaveOne and ProTaper on Postoperative Pain: A Randomized Clinical Trial

By Dr. Barry H. Korzen | Posted June 26, 2015

In the May 2015 issue of the Journal of Endodontics Nekkoofar et al reported on a randomized clinical trial that studied postoperative pain following endodontic instrumentation comparing a reciprocating system (Wave One) and a system that utilizes full rotation (ProTaper).

Shaping Ability of 4 Different Single-file Systems in Simulated S-shaped Canals

By Dr. Barry H. Korzen | Posted January 8, 2015

Within the parameters of this study the authors found the following: Both reciprocating files showed a marked tendency to straighten the S-shaped canals, whereas F360 and OneShape (ed. The Zone) files maintained the original canal curvatures well; files that are less tapered seem to be more favorable; OneShape and Reciproc were shown to be faster than WaveOne and F360; and WaveOne and Reciproc should be used with care in canals with severe curvature.

Effect of ProTaper Universal, Endoflare, Revo-S, HyFlex Coronal Flaring Instruments, and Gates Glidden Drills on Crack Formation

By Dr. Barry H. Korzen | Posted October 5, 2014

Coronal flaring during the initial stages of root canal preparation is an accepted technique with many advantages. In a paper published in the October 2014 issue of the Journal of Endodontics, Arslan et al set out to evaluate crack formation caused by four coronal flaring nickel titanium instruments and gates glidden drills.

Effectiveness of different intracanal irrigation techniques in removing intracanal paste medicaments

By Dr. Barry H. Korzen | Posted May 26, 2014

In non-surgical multi-visit endodontic procedures the placement of medication for bacterial control and/or pain relief is a common treatment approach. But prior to obturation this medication must be removed so as not to interfere with the placement of the final obturation of the canal. Various irrigation techniques and different medications were studied. The authors found that the position of the irrigational needle and the type of medicament used are key factors which influence the effectiveness of irrigation in removing medicaments.

Shrinkage of Backfill Gutta-percha upon Cooling

By Dr. Barry H. Korzen | Posted April 27, 2014

One goal of non-surgical endodontics is sealing the root canal space hermetically and gutta-percha is still the main filling material of choice. In a paper published in the May 2014 issue of the Journal of Endodontics Lottanti, Tauböck and Zehnder investigated the “shrinkage of gutta-percha used for the backfilling procedure under clinically relevant conditions.”

Influence of Operator’s Experience on Root Canal Shaping Ability with a Rotary Nickel-Titanium Single-File Reciprocating Motion System

By Dr. Barry H. Korzen | Posted March 27, 2014

All too frequently we are told by manufacturers’ representatives that the product or technique they are demonstrating is so simple that a transition to this new technique will be quick and easy. Muñoz et al. evaluated the influence of operator’s experience on the shaping of double-curvature simulated root canals. Their results indicated “the importance of previous training and the need to acquire experience, in spite of the system’s apparent simplicity.”

Effect of Working Length Measurement by Electronic Apex Locator or Digital Radiography on Postoperative Pain: A Randomized Clinical Trial

By Dr. Barry H. Korzen | Posted February 12, 2014

Determination and maintainance of an accurate working length during endodontic treatment is of vital importance.
This study found no difference in postoperative pain between working length measurement methods either using an electronic apex locator or digital radiography. However, the reduced exposure to radiation by using an apex locator may be a factor that influences a dentist’s decision to choose the electronic apex locator.