The aim of the study was to report a clinical case of endodontic treatment of a maxillary first premolar with three root canals using an optical microscope and rotary instrumentation technique. The main complaint of the patient, a 16-year-old girl, was pain in tooth 14. After clinical and radiographic examination, irreversible pulpitis was diagnosed. An alteration in the middle third of the pul...

Internal bleaching procedures such as the walking bleach technique can be used for whitening of discoloured root-filled teeth. The walking bleach technique is performed by application of a paste consisting of sodium perborate-(tetrahydrate) and distilled water (3% H2O2), respectively, in the pulp chamber. Following a critical review of the scientific literature, heating of the mixture is contra...

Absorbed lead continuously adds to the lead deposited in the vascularized circumpulpal dentin of the teeth. Thus, this dental tissue is expected to contain a lead concentration which reflects the integrated lead exposure during the time from completion of tooth formation to tooth extraction or shedding. A method has been developed to assess the lead level in the dentin surrounding the pulp cham...

PURPOSE This study was performed to estimate the prevalence of giant dentin tubules or microcanals in primary maxillary anterior teeth. METHODS One hundred sixty eight extracted or exfoliated primary maxillary anterior teeth were sectioned and examined by optical microscopy and image analysis. Differences in the proportion of teeth with microcanals among tooth types were tested by using the P...

The success of endodontic treatment requires the knowledge of tooth morphology and its variations. Mandibular incisor's anatomy presents a challenge when an endodontic access is made, because of its small size and high prevalence of two canals. We are describing a Weine's Type IV root canal configuration that was detected in a mandibular central incisor, which was demonstrated by a radiographic...

The antimicrobial activity of visible light cure (VLC) calcium hydroxide pulp capping products was compared to self-cure products by an in vitro microbial assay. Individual microbial samples were collected from six deep carious lesions, sonicated, and plated onto duplicate T-soy blood agar. Uniform discs of each capping compound were pressed slightly below the surface of the agar and allowed to...

This study evaluates the amount of remaining tooth structure and possibility of producing lateral perforation following the use of different diameters of parallel-sided Parapost drills in groups of different canal curvatures (0 degrees-15 degrees, 16 degrees-25 degrees, 26 degrees <) in distal canals of first and second mandibular molar teeth. After enlargement of root canals using the crown-do...

OBJECTIVES A study was undertaken to assess the prevalence of taurodontism in premolars in a group of adult dental patients in Trinidad and Tobago since there is no such data available for the region. METHODS Periapical and orthopantomograms of 1090 randomly selected patients were examined for the presence of an apically displaced pulp chamber without the usual constriction at the cementoenam...

INTRODUCTION The conventional method of teaching endodontics has some drawbacks. Due to the small size of the oral cavity, students cannot closely observe the clinical procedure. Use of new teaching modalities such as the intraoral camera may obviate this problem. This study assessed the effect of video-assisted clinical instruction in dentistry (VACID) on dental student's knowledge and perform...

INTRODUCTION During the past decade, with a view to understanding pulp biology better and developing bioactive materials, pulpotomy has been reinvestigated as a definitive treatment in mature permanent teeth. Pulp chamber pulpotomy or coronal pulpotomy is widely used in deciduous and immature permanent teeth, and there is thus a need for trials to evaluate the outcome of pulpotomy as a therapeu...