The June 2000 issue of the Journal of the California Dental Association contains four original studies on endodontic issues.

Studies in Endodontics
An introduction to the issue
By M. Sadegh Namazikhah, DMD, MSEd

An In-Vitro Comparison of the Radiographic and Actual Gutta-Percha Terminus
The difference between the radiographic gutta-percha terminus and the actual gutta-percha terminus of human molars is examined.
By M. Sadegh Namazikhah, DMD, MSEd; Mojgan Ghiai, DDS; Matthew J. Parkin, DDS; Lawrence Puccinelli, Jr., DDS

Comparison Between a Hand Stainless-Steel K File and a Rotary NiTi 0.04 Taper
The results of root canal preparation using traditional stainless-steel files and results obtained using rotary nickel-titanium files are compared.
By M. Sadegh Namazikhah, DMD, MSEd; Hussein R. Mokhlis, DDS, MSEd; Khalid Alasmakh, DDS, MSEd

Gutta-Percha: A Look at the Need for Sterilization
The extent of contamination of commercially available gutta-percha cones taken directly from the manufacturer’s box is evaluated.
By M. Sadegh Namazikhah, DMD, MSEd; David M. Sullivan, DMD; Gregory L. Trnavsky, DDS

Dye Leakage Study: Comparing Conventional and New Techniques
The degree of dye penetration of Thermofil, Simplifill and standard lateral condensation is compared.
By Sadegh Namazikhah DMD, MSEd; Ramiar Shirani, DDS; Amir Mohseni, DDS; Fariborz Farsio, DMD



The Editor/
Perception or Reality?
By Jack F. Conley, DDS

Impressions/
Eat Your Way to Better Dental Health
By David G. Jones

Dr. Bob/
Waiting ...
By Robert E. Horseman, DDS