Articles - Endodontic Articles 9 en-us http://endodonticsjournal.com N/A http://endodonticsjournal.com muveqqeti@gmail.com 20 http://endodonticsjournal.com/articles/94/1/The-effect-of-instrument-type-and-preflaring-on-apical-file-size-determination/Page1.html B. T. Tan & H. H. Messer Department of Restorative Dentistry, School of Dental Science, University of Melbourne, Melbourne, Australia.Aim.The aim of this study was to investigate the effect of instrument type (K-files and Lightspeed1 (LS) instruments) and the impact of preflaring on the first file size that binds at working length (WL) in a range of canal types of varying sizes and curvatures. Conclusions.Preflaring and use of hand-held LS instruments resulted in an increase in the instrument size that bound at WL. If an operator wishes to determine an accurate master apical file size, canal orifice enlargement should be performed first before the placement of the assessment file. muveqqeti@gmail.com (JofER editor) Sat, 13 Sep 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/93/1/Idiopathic-osteosclerosis-of-the-jaws-followed-through-a-period-of-20-27-years/Page1.html A. Halse & O. MolvenSection of Oral Radiology and Section of Endodontics, School of Dentistry, University of Bergen, Bergen, Norway. Aim.The aim of the present study was to examine the prevalence of idiopathic osteosclerosis (IO) in a baseline sample and to follow the patients through an extended period of time. Conclusion.The present investigation showed that IO lesions observed over a period of more than two decades were stable. The observations support the theory that IO should be considered a normal anatomical variant of bone. In some cases, a local aetiological agent may cause development of structures with an identical appearance. muveqqeti@gmail.com (JofER editor) Tue, 09 Sep 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/92/1/Temperature-change-within-gutta-percha-induced-by-the-System-B-Heat-Source/Page1.html M.Venturi, G. Pasquantonio, M. Falconi & L. Breschi.Private Practice, Bologna, Italy,Private Practice, Rome, Italy.Department of S.A.U. & F.A.L., University of Bologna, Bologna,  Italy.Department of Science and Society, University of Cassino, Cassino (FR), Italy.Aim.This study evaluated the temperature change within gutta-percha during the vertical compaction technique performed with a System-B Heat Source. Conclusions.This study demonstrated the thermal changes in guttapercha that occur during the vertical compaction technique by means of a System-B Heat Source. The use of a thermostatic bath distinguished this study from previous reports. The null hypothesis was rejected as the use of the System- B Heat Source (set at 250 8C) in thin canals revealed that the heating of the apical gutta-percha was inconsistent and that the compaction was performed usually at body temperature. Moreover, at the CEJ, the use of the heating device revealed that increases of outer surface temperature on the root was compatible with the periradicular tissues. muveqqeti@gmail.com (JofER editor) Mon, 08 Sep 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/91/1/Inflammatory-response-to-different-endodontic-irrigating-solutions/Page1.html M. Tanomaru Filho, M. R. Leonardo, L. A. B. Silva, F. F. Anibal & L. H. Faccioli.Department of Endodontics, School of Dentistry of Araraquara, University of the State of Sao Paulo, Araraquara, SP, Brazil.Department of Clinical Pediatrics, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil.School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil.School of Pharmaceutical Science, University of Sao Paulo, Ribeirao Preto, SP, Brazil.Aim.The aim of this study was to evaluate the inflammatory response to irrigating solutions injected into the peritoneal cavity of mice. Conclusions. In this study, a 0.5% sodium hypochlorite solution caused irritating tissue reactions and showed higher inflammatory responses. Two percent chlorhexidine digluconate was biocompatible, suggesting that it can be an alternative or a complement to sodium hypochlorite during irrigation. muveqqeti@gmail.com (JofER editor) Sat, 06 Sep 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/90/1/An-in-vitro-evaluation-of-four-materials-as-barriers-to-coronal-microleakage-in-root-filled-teeth/Page1.html A. A. Zaia, R. Nakagawa, I. De Quadros, B. P. F. A. Gomes, C. C. R. Ferraz, F. B.Teixeira & F. J. Souza-Filho Department of Restorative Dentistry, Dental School of Piracicaba, Piracicaba, Sao Paulo, Brazil. Aim.To assess the ability of IRM, Coltosol, Vidrion R and Scotch Bond to seal the pulp chamber following root-canal treatment. Conclusions.None of the materials were able to prevent microleakage in all specimens. Vidrion R and Scotch Bond demonstrated the poorest results when used as barriers to coronal microleakage, whilst IRM and Coltosol were significantly better in preventing microleakage. muveqqeti@gmail.com (JofER editor) Fri, 05 Sep 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/89/1/Invivo-fracture-of-anewrubber-dam-clamp/Page1.html S. Zinelis & J. MargelosBiomaterials Laboratory, School of Dentistry, University of Athens, Athens, Greece.Aim.This study was carried out to investigate the reasons for fracture of a new rubberdam clamp used for the first time.Key learning points.The labelling technique used to number clamps maybe implicated with catastrophic failure.Dentists should be aware that even new clamps can fracture.It is important that clamps are secured to prevent inhalation of metal fragments, should catastrophic failure occur. muveqqeti@gmail.com (JofER editor) Fri, 30 Aug 2002 00:00:00 -0500 http://endodonticsjournal.com/articles/88/1/Prevalence-of-different-periapical-lesions-associated-with-human-teeth-and-their-correlation-with-the-presence-and-extension-of-apical-external-root-resorption-/Page1.html F.V.Vier & J. A. P. Figueiredo Post-Graduate Programof Dentistry, ULBRA, Canoas, Brazil.Aim.The aim of this study was to determine the prevalence of various periapical pathologies and their association with the presence and extent of apical external inflammatory root resorption in human teeth. Conclusions.On the basis of our study of extracted human teeth, we conclude that: Cystic lesions accounted for 24.5% of chronic periapical lesions; The majority of chronic periapical lesions (84.3%), whether cystic (20.6%) or noncystic (63.7%), had large collections of acute inflammatory cells; Periforaminal and foraminal resorptions were present in 87.3 and 83.2% of roots associated with periapical lesions; The pattern of periforaminal resorption was independent of the pattern of foraminal resorption; There was no correlation between the histopathological diagnosis of the periapical lesion and the presence and extension of apical external root resorption. muveqqeti@gmail.com (JofER editor) Tue, 27 Aug 2002 00:00:00 -0500 http://endodonticsjournal.com/articles/87/1/Diagnosing-periapical-lesions---disagreement-and-borderline-cases/Page1.html A. Halse, O. Molven & I. FristadSection of Oral Radiology and Section of Endodontics, School of Dentistry, University of Bergen, Bergen, Norway. Aim.The aim of this paper is to present a selection of disagreement and borderline cases from a methodological study on the radiographic diagnosis of periapical disease. Conclusion.This presentation of difficult borderline cases illustrates the uncertainty frequently involved in radiographical decision making. In such cases, the decision: lesion or no lesion can only be made after careful analysis of the periodontal ligament space, the lamina dura, the trabecular pattern and the bone marrow spaces. muveqqeti@gmail.com (JofER editor) Sat, 24 Aug 2002 00:00:00 -0500 http://endodonticsjournal.com/articles/86/1/Combinations-of-bacterial-species-in-endodontic-infections/Page1.html L.B. Peters, P.R. Wesselink & A.J. van WinkelhoffDepartment of Cariology Endodontology Pedodontology and Department of Oral Microbiology, Academic Center for Dentistry Amsterdam, Amsterdam, the Netherlands.Aim.This study was undertaken to investigate combinations of bacteria found in root-canal infections of teeth with periapical bone destruction without clinical signs and symptoms. Conclusions.These results indicate that endodontic pathogens do not occur at random but are found in specific combinations. These combinations may contribute to the development of clinical signs and symptoms. muveqqeti@gmail.com (JofER editor) Wed, 21 Aug 2002 00:00:00 -0500 http://endodonticsjournal.com/articles/85/1/Periapical-status-prevalence-and-quality-of-endodontic-treatment-in-an-adult-French-population/Page1.html L. Lupi-Pegurier, M.-F. Bertrand, M. Muller-Bolla, J. P. Rocca & M. BollaDepartment of Public Health, Department of Conservative Dentistry and Endodontics, and Department of Biomaterials, Laboratory of Dental Biomaterials and Experimental Odontology, University of Nice, Sophia, Antipolis, France.Aim.The aim of this study was to determine the periapical status and the quality of root-canal treatment amongst an adult population attending the dental school in Nice, France during 1998. Conclusions.Within the constraints of this study, the results demonstrated that adequate root fillings (no voids, obturation within 2 mm of the radiographic apex) was associated with fewer periapical lesions. Adequate root fillings were observed in only 32% of root-filled teeth. muveqqeti@gmail.com (JofER editor) Fri, 16 Aug 2002 00:00:00 -0500