Objectives This study evaluated smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation. Materials and Methods Forty-five extracted uniradicular human mandibular premolars with single canals were treated endodontically. The cervical and middle thirds of the fillings were then removed, and the specimens were divided into 9 groups: G...

This clinical investigation examined the effect of chlorhexidine, sanguinarine and saline as coolants during ultrasonic scaling on gingivitis in orthodontic patients. Eighteen females with gingivitis participated in this study. Plaque Index (PI), Gingival Index (Gl), Interdental Bleeding Index (Bl) and Probing Depth (PD) were recorded for the following teeth 16, 21, 25, 36, 41 and 45 at baselin...

INTRODUCTION The aim of this study was to evaluate the effect of intra-canal calcium hydroxide (CH) remnants after ultrasonic irrigation and hand file removal on the push out bond strength of AH-26 and EndoSequence Bioceramic sealer (BC Sealer). METHODS AND MATERIALS A total of 102 single-rooted extracted human teeth were used in this study. After root canal preparation up to 35/0.04 Mtwo rot...

Abstract Background We established an in vivo intraradicular biofilm model of apical periodontitis pigs which we compared the efficacy different irrigant activation techniques for removal. Methods Twenty roots from deciduous mandibular second premolar 5 male were used. After pulpectomy, canals left open 2 weeks and then sealed 4 to enable development intracanal biofilm. The biofilms was evaluat...

INTRODUCTION Biofilms of resistant species such as Enterococcus faecalis pose a major challenge in the treatment of root canals with established periapical disease. This study examined the effects of gaseous ozone delivered into saline on biofilms of E. faecalis in root canals of extracted teeth with and without the use of passive ultrasonic agitation. METHODS Biofilms of E. faecalis were est...

INTRODUCTION The purpose of this study was to evaluate the effectiveness of different irrigating methods in removing the smear layer at 1, 3, 5, and 8 mm from the apex of endodontic canals. METHODS Sixty-five extracted single-rooted human mandibular premolars were decoronated to a standardized length of 16 mm. Specimens were shaped to ProTaper F4 (Dentsply Maillefer, Ballaigues, Switzerland) ...