The smear layer in endodontically instrumented root canals first reported in 19751 is both organic and inorganic in composition. 2 The inorganic material in the smear layer is composed of tooth structure and some nonspecific inorganic contaminants. 2 The organic components may consist of heated coagulated proteins, necrotic or viable pulp tissue, and odontoblastic processes plus saliva, blood c...

AIM Aim of this work was to carry out a comparative evaluation of the structural behaviour of different root canal posts (cylindrical, conical and triple conical) fitted in a second lower bicuspid and subjected to compression and bending test. MATERIALS AND METHODS This study has been carried out by numerical method of structural analysis of finite elements (FEM, Finite Element Method). Diffe...

avulsion is a serious injury which causes damage to dental and supportive tissues, ranging from 1-16 % among dental injuries and it mostly occurs in maxillary incisors. this report presents a case of replantation of a traumatically avulsed central incisor. the left central incisor of an 8 year-old boy with open apex was avulsed and was left in unclean and dry conditions. tooth was replaced afte...

AIM This prospective clinical study explored the influence of calcium hydroxide as an interappointment dressing on the healing of periapical lesions associated with pulpless teeth that had not been endodontically treated previously. This was achieved by comparing the prognosis after a two-visit root canal treatment with that following a one-visit treatment. METHODOLOGY Seventy-three patients ...

Objective: The study aimed to evaluate the variations in RCM of mandibular first premolars (MFP) south Indians and also evaluated gender dimorphism contralateral symmetry pattern. Methods: 200 Cone Beam Computed Tomography (CBCT) images MFP patients above 18 years were analyzed for root canal morphology after excluding distorted images, endodontically treated tooth or fractured root. teeth care...

Glass fiber-reinforced endodontic posts are considered to have favorable mechanical properties for the reconstruction of endodontically treated teeth. The aim of the present investigation was to evaluate the survival of two tapered and one parallel-sided glass fiber-reinforced endodontic post systems in teeth with different stages of hard tissue loss and to identify risk factors for restoration...

Although the published papers about this matter is limited to clinical case reports, the aim of this review was to quantify the success rate of immediate vs late orthodontic extrusion of traumatically intruded teeth. From 55 reports in a PubMed and Medline computerized search, 13 reported patients involving 22 traumatically intruded anterior upper teeth with orthodontic extrusion were selected....

The use of post and core systems has become an excellent alternative for restoring endodontically treated teeth. The aim of this study was to evaluate the von Mises, maximal compressive and tensile stresses distribution using the Finite Element Method (FEM) on human teeth restored with different post and core systems. The analysis was made on endodontically treated maxillary central incisors. T...

AIM The aim of this study was to evaluate the prevalence of vertical root fractures (VRF) in extracted endodontically treated teeth and to correlate the findings to previous studies and surveys. METHODOLOGY Root-canal-treated teeth were referred for extraction from a public dental clinic. The endodontic therapy had been completed by a variety of dentists. Each tooth was evaluated following ex...

Avulsion and root fractures are complications may be seen after a traumatic accident. These should be diagnosed and treated as soon as possible because the time elapsed between the trauma and start of the treatment is considered as the most important factor in the prognosis. All treatment protocols should be directed toward the management of the pulp and periodontal ligament. The present case r...