Evaluation of new technique of sterilization using biological indicator.

Background: A novel technique of sterilization of endodontic files is introduced in this article.

Aims: Newly introduced sterilization unit, named "SteriFast" is compared with autoclave and glass bead sterilizer using biological indicator.

Materials And Methods: Spore strips of were cultured in nutrient broth.

Mouthrinses affect color stability of composite.

Aim: The aim of this study is to evaluate the effect of alcohol and nonalcohol containing mouth rinses on the color stability of a nanofilled resin composite restorative material.

Materials And Methods: A total of 120 samples of a nanofilled resin composite material (Tetric N-Ceram, Ivoclar Vivadent AG, FL-9494 Schaan/Liechtenstein) were prepared and immersed in distilled water for 24 h. Baseline color values were recorded using Color Spectrophotometer 3600d (Konica Minolta, Japan).

Stereomicroscopic evaluation of dentinal defects induced by new rotary system: "ProTaper NEXT".

Introduction: The objective of this study was to evaluate dentinal defects formed by new rotary system - Protaper next™ (PTN).

Materials And Methods: Sixty single-rooted premolars were selected. All specimens were decoronated and divided into four groups, each group having 15 specimens.

A molecular insight into the role of inflammation in the behavior and pathogenesis of odontogenic cysts.

Background: Although, odontogenickeratocyst (OKC) and dentigerous cyst (DC) are considered asdevelopmental cysts inflammation has been seen in its connective tissue wall. Inflammation is seen to alter the epithelial lining of both OKC and DC butwhether it plays in altering the behavior of these cysts is not fully understood.

Aim: The present study is conducted with the help of molecular marker proliferating cellular nuclear antigen (PCNA) to assess the proliferative activity of OKC and DC and to further evaluate and correlate the effect of inflammation on the proliferative activity and hence on biological behavior of these cysts.

An in vivo evaluation of two types of files used to accurately determine the diameter of the apical constriction of a root canal: an in vivo study.

Aim: The aim of this study was to compare sizes of the first instrument with or without a taper that binds at the apical constriction of a root canal after coronal flaring.

Methods And Materials: A total of 310 canals were evaluated in patients presenting for root canal therapy. Canals with intact apices were selected.