Reducing Bacterial Counts in Dental Unit Waterlines:  Tap Water versus Distilled Water James D. Kettering, PhD; Joni A. Stephens, RDH, EdS; Carlos A. Muņoz-Viveros, DDS, MSD; W. Patrick Naylor, DDS, MPH, MS Recurrent aphthous stomatitis and recurrent intraoral herpes are the two most commonly presenting oral lesions in the dental setting. The authors provide oral health professionals with important information needed to accurately discriminate between these disorders.
	Evidence-Based Decision Making in Action:  Part 1 - Finding the Best Clinical Evidence Jane L. Forrest, EdD, RDH; Syrene A. Miller, BA This study compares the apical leakage from obturated root canals using lateral condensation; Nd: YAG laser-softened gutta-percha and System-B techniques.
	The Effect of Salvadora Persica Extract (Miswak) and Chlorhexidine Gluconate on Human Dentin:  A SEM Study Khalid Almas, BDS, MSc, DDPH, FRACDS, FDSRCS, FICD, FADI This article presents the use of captured data within the range of patient care activities of the dental practitioner and describes the use of computer technology in dentistry during a typical patient visit.