Introduction: Endodontics suffered the influence of a variety of concepts and philosophies that characterized the different periods of its evolution. Foramen Debridement is an endodontic procedure that aims the passive cleaness of cementary channel and can be considered as a pertinent example of controversial topics in endodontics. Objective: To evaluate the attitudes of endodontists in making the foramen debridement of necrotic pulp in cases with and without periapical lesion and which moment they consider convenient to carry out this surgical maneuver. Materials and methods: The study was conducted through a questionnaire to evaluate the knowledge of endodontists of Pernambuco Brazil, about foramen debridement. In this questionnaire could be found general information about identification and specific of foramen debridement procedure and its realization during biomechanical preparation of root canals diagnosed with pulp necrosis with or without periapical lesion radiographically visible. Results: The response rate, a sample of 115 professionals, was 63.5%. Most experts had over 20 years of graduates (49.5%) and when asked if they perform foramen debridement d 97.3% responded yes. Regarding the clinical situation in which perform the foramen debridement only 25.3% answered at all endodontic treatments and 54.9% in all cases necrosis. Conclusion: The results of this research suggest that foramen debridement Consolidated protocols endodontic specialists of Pernambuco.
The correct diagnosis of vertical root fractures (VRF) in the presence of artifacts is a challenge for clinicians and endodontists. Moreover, there is controversy about which imaging technique is best for this purpose. In an in vitro model, we evaluated the diagnosis of VRF in teeth treated endodontically with and without intraradicular metal posts, using the Clark technique and cone beam computed tomography (CBCT), as well as the interference of artifacts with the diagnosis. Twenty-two first or second maxillary or mandibular premolars were included. Teeth were randomly allocated to three groups: G1 (two teeth without fracture with endodontic treatment and one with an intraradicular metal post); G2 (10 fractured teeth with endodontic treatment); and G3 (10 fractured teeth with endodontic treatment plus a metal post). The examiners recorded the presence or absence of fracture and its location and classified its type. There was no statistically significant difference between image acquisition systems. When differentiating the teeth (first vs. second premolars), there was a statistically significant difference among the examiners (p=0.020). However, when comparing the values obtained by the examiners regarding the visualization of the fracture site as well as the presence of fracture correlated with the presence of a metal post and angulation, there were no statistically significant differences (p>0.05). Digital radiographs and CBCT were similar for the diagnosis of VRF. High sensitivity was observed by CBCT image reconstructions. Therefore, the presence of metal posts generated artifacts, resulting in low sensitivity, specificity and accuracy.
One of the most common dental procedures associated to vertical root fractures is the endodontic treatment with excessive dentin wall wear and another increasing risk factor is the use of intraradicular post. Objective: This study evaluated the resistance to fracture of the buccal and palatal roots of maxillary first premolarswith endodontically treated canals and spaces for posts. Material and methods: Twenty two first permanent premolar roots (11 buccal and 11 palatal) composed the experimental sample. The canals were prepared with Protaper Universal® system until file F3 and thenfilled with gutta-percha cone F3 and endodontic sealer and receivedspaces for posts keeping 4 mm of filling at the apical third. The rootswere subjected to compression test in a universal testing machine(Kratus). The roots were subjected to a progressive compressionstress at a speed of 0.5 mm / min. A load cell of 200 kg was used.Results: Statistical analysis revealed significant differences between the strength values and resistance limit between groups (P<0.05), as analyzed by t Student test. The values of resistance to fracture of 0.44 kgf/mm2 for group 1 (buccal roots) and 0.31 kgf/mm2 for group 2 (palatal roots) were found. Conclusion: The resistance tofracture of the buccal roots was higher than that of palatal rootsof first premolars submitted to biomechanical preparation and rootpreparation for intraradicular post.
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