Dental News Articles

DENTAL NEWS, VOLUME XII, NUMBER IV, 2005 Common Steps to Safe and Efficient Canal Preparation By Richard Mounce, DDS ( Comfort@MounceEndo.com ) - Private endodontic practitioner, Portland, Oregon, USA. Author of a comprehensive DVD on cleansing, shaping and packing the root canal system for the general practitioner. There are universal steps to preparation of canal spaces that ideally can and should be observed irrespective of the particular type of rotary nickel titanium files used for canal preparation. These steps can create more ideal canal shapes and do so in a manner that can diminish the incidence of iatrogenic problems. While there are an infinite variation in the methods and materials that might be employed in instru- mentation, the steps described below have empirically proved highly productive for the author. 1) Negotiation: Once straight line access has been made, it is essential to negotiate the canal to determine if the canal path is clear...

DENTAL NEWS, VOLUME XIII, NUMBER I, 2006 The Prevalence of Two Canals in Mesial Root of Endodontically Treated Maxillary First Molars among a Saudi Arabian Sub-Population By Saad Al-Nazhan - BDS, MSD, Associate Professor and Chairman, Department of Restorative Dental Science Division of Endodontics, College of Dentistry King Saud University Abstract The aim of this in vivo study was to assess the incidence of two root canals in the mesial root of the endodontical- ly treated permanent maxillary first molars of a Saudi Arabian sub-population. A clinical study of 352 root-canal treated permanent maxillary first molars was conducted. The teeth were examined clinically and radiographically. The results showed that 23.3% of the examined teeth had two canals in the mesial root (17.0% with one apical foramen and 6.3% with two separate foramens). The occurrence of two canals in the mesial root of the maxillary first molar of a Saudi Arabian sub-population was w...

Dental News Volume XX, Number I, March, 2013 by Dr. Jérome Elias, Dr. Jean-Jacques J-J Bonnin In endodontic treatments, Nickel-Titanium instruments in continuous rotation (1) optimize root canal shaping. Generally, rectilinear and barely curved root canals with a round or oval section does not cause difficulties and can be prepared by using all standard techniques. However, particularly thin and moderately or strongly curved canals with a laminar section are more difficult to shape and involve a considerable risk of failure. Despite its super elastic qualities, Nickel-Titanium alloy has one important inconvenience, namely its low resistance in case of repeated use which results in instrument separation. Instrument fracture can occur either through material fatigue caused by a significant number of compression-tension cycles or through torsion due to obstruction of the instrument’s tip in the canal (2) (4) . A certain number of factors such as the pressure exercised...