Five techniques for delivering ZOE into straight and curved simulated root canals were investigated for their depthof-fill capabilities. The techniques tested were those using the endodontic pressure syringe, the mechanical syringe, the lentuIo spiral, the JiffyTM Tube, and the tuberculin syringe. Statistical analysis revealed that the instruments of choice for filling straight canals were the ...

BACKGROUND The aim of this in vitro study was to compare the shaping characteristics of two types of nickel-titanium endodontic file systems with regard to the following parameters: Canal straightening, Canal deviation and Instrumentation time. MATERIAL AND METHODS Fifty severely curved canals simulated in resin blocks were prepared to an apical size 25 using Protaper Universal orNeolix syste...

introduction : teeth with irreversible pulpitis usually undergo root canal therapy (rct). this treatment modality is often considered disadvantageous as it removes vital pulp tissue and weakens the tooth structure. a relatively new concept has risen which suggests vital pulp therapy (vpt) for irreversible pulpitis. vpt with calcium enriched mixture (vpt/cem) has demonstrated favorable treatment...

introduction : there is a direct relationship between the quality of root canal obturation and success of endodontic therapy. the aim of the present study was to assess the quality of canal obturation performed by undergraduate dental students at the faculty of dentistry, mashhad university of medical sciences, mashhad, iran. materials and methods: records of 200 endodontically treated teeth fr...

The clivus (Latin: slope) is a curved sloppy surface between the dorsum sellae of sphenoid and foramen magnum of occipital bone in human skull. In the present study, a bony canal was observed in the clivus. There are very few reports in literature about the presence of a bony passage in the clivus. These bony canals if present may contain communicating veins between extracranial and intracrania...

OBJECTIVES The aim of this study was to assess the influence of operator experience level on the lifespan of the WaveOne Primary file (Dentsply Maillefer, Ballaigues, Switzerland) in extracted teeth. MATERIALS AND METHODS Moderately curved canals of extracted maxillary and mandibular molars were randomly distributed into 2 groups: experienced and inexperienced operators. Ten files were alloca...

AIM One Shape Apical 1 (OSA 1) is a new file for preparing the apical aspect of the root canal after One Shape (OS, Micro Mega, Besançon, France). This study compared apical transportation and centering ratios in curved root canals, which were instrumented with ProTaper Next (PTN, Dentsply Tulsa Dental Specialties, Tulsa, OK) up to size X3 and with OS up to OSA 1. MATERIALS AND METHODS Forty-...

BACKGROUND Irrigation of the root canal system is an essential step in the endodontic treatment. The aim of this article is to introduce continuous apical negative-pressure ultrasonic irrigation (CANUI), a new irrigation concept, and compare the characteristics of this new technique with current devices for activating the irrigant. MATERIAL AND METHODS CANUI is designed for cleaning and disin...