نتایج جستجو برای: pulp chamber perforation
تعداد نتایج: 79006 فیلتر نتایج به سال:
The diagnostic value of dark-gray discoloration of the crown of primary incisors following traumatic injury as a predictor of pulp vitality is controversial. This retrospective study attempted to examine the condition of the pulp of primary incisors with dark-gray discoloration following traumatic injuries. Forty-eight gray caries-free, traumatized primary incisors were examined clinically and ...
INTRODUCTION Pulp sensitivity testing, even with its limitations and shortcomings, has been and still remains a very helpful aid in endodontic diagnosis. Pulp sensitivity tests extrapolate pulpal health from the sensory response. The aim of the present study was to identify the sensitivity, specificity, positive and negative predictive values (NPVs) of thermal and electrical tests of pulp sensi...
INTRODUCTION The aim of this in vitro study was to compare the temperature rises in the pulp chamber and time spent with different techniques for orthodontic resin adhesive removal. METHODS AND MATERIALS Adhesive removal was performed in 20 extracted human maxillary second premolars with five techniques: high-speed tungsten carbide burs with water-cooling (BurH-cool) and without cooling (BurH...
Introduction: Radiography is the most common method for measurement of working length, though it is not the ideal method because of technical problems, radiation hazard, superimposition of permanent teeth bud on primary teeth, and so on. Electronic Apex Locator (EAL) is a device for determination of working length. Therefore, this study aimed to compare the accuracy of an electronic apex locato...
The use of a cotton pellet as a spacer or as a medication carrier in the tooth pulp chamber between root canal therapy appointments is an accepted and common practice. Retaining the pellet in the proper position within the tooth is very important. Cellulose fibers from disposable drapes, gowns and cotton can cause foreign body reactions if left in a surgical wound." In addition, cellulose fiber...
The long-term preservation of a permanent tooth is only possible if it has a proper crown-to-root ratio and the dentin walls are sufficiently stable to ensure normal function. After endodontic treatment of carious, young permanent teeth with not yet fully developed roots, apexogenesis and normal root development is only possible if the radicular part of the pulp remains intact.5 Also in this ca...
objective: the purpose of this study was to investigate the histological response to delib-erate perforation repaired using amalgam or mta either immediately or with delay on cats’ molars. materials and methods: twenty-eight molar teeth from four cats were used in this ex-perimental randomized study. after preparing the access cavity, the floor of pulp cham-bers were deliberately perforated wit...
The reaction of three-dimensional cultures of pulp-derived cells in a dentin barrier test was recorded after exposure to All-Bond 2, Prime & Bond NT, Syntac SC, Syntac Classic, and Prompt L-Pop. The materials were applied on bovine dentin disks in a perfusion chamber, and the experiments were performed with (0.3 ml/h, 2 ml/h) and without perfusion of the pulpal part of the chamber. The cell rea...
BACKGROUND Recent studies reported on the very complex morphology of the pulp system in equine cheek teeth. The continuous production of secondary dentine leads to distinct age-related changes of the endodontic cavity. Detailed anatomical knowledge of the dental cavities in all ages is required to explain the aetiopathology of typical equine endodontic diseases. Furthermore, data on mandibular ...
A healthy female was referred to Endodontic Department. The referral letter from her dentist expressed that an emergency pulpotomy of tooth #27 had been carried out with probable perforation of the chamber floor which was due to the unusual anatomy of the chamber. Cone-beam computed tomography (CBCT) revealed that the tooth had two mesial and two distal canals. Perforation site was repaired and...
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