By Dr. Barry H. Korzen | Posted February 25, 2014
Contrary to manufacturers’ instructions clinicians who purchase MTA in commonly available 1 gram bottles will use the material over multiple applications.This study assessed changes in MTA particle size distribution once the packaging had been opened. The authors concluded that “smaller particles have a greater predisposition to absorb moisture.” and advised the use of single-use systems.
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.
To compare and contrast maintenance of root canal geometry using rotary NiTi systems – An in vitro study
By Dr. Barry H. Korzen | Posted January 24, 2014
Original research published in the June 2013 issue of Endodontology found that OneShape (The Zone) instruments were found to have better control than WaveOne and ProTaper over the root canal geometry and deviation after preparation of the root canal system as instructed by the manufacturer.
Influence of powder-to-water ratio on radiopacity, setting time, pH, calcium ion release and a micro-CT volumetric solubility of white mineral trioxide aggregate
By Dr. Barry H. Korzen | Posted January 16, 2014
The radiopacity, setting time, pH level, calcium ion release and solubility of white mineral trioxide aggregate was evaluated with different powder-to-water ratios. It was found that the ratio of powder/water significantly interfered with the physical and chemical properties of white MTA Angelus. Although not stated the results leads one to believe that using pre-measured capsules will allow for greater consistency when used clinically.
By Dr. Barry H. Korzen | Posted January 12, 2014
Recalling a patient to assess healing after endodontic treatment, whether surgical or non-surgical, has been a routine that most practitioners wisely follow. This paper examined and compared the clinical outcome of endodontic microsurgery after 1 year of follow-up and over a period of 4 years.
By Dr. Barry H. Korzen | Posted December 11, 2013
Cholesterol clefts are common histologic findings in periapical biopsies and their highly significant incidence among elderly patients may be a possible cause for the lack of repair. Therefore clinicians should be aware of the risk for persistent lesions after endodontic treatment in elderly patients.
By Dr. Barry H. Korzen | Posted December 4, 2013
A paper by Azarpazhooh et al and published in the December 2013 issue of The Journal of Endodontics investigated the preference of patients in Toronto, Canada for management of a tooth affected by painful apical periodontitis.