Articles - Endodontic Articles 11 en-us http://endodonticsjournal.com N/A http://endodonticsjournal.com muveqqeti@gmail.com 20 http://endodonticsjournal.com/articles/114/1/Cytotoxicity-of-dentine-bonding-agents-on-human-pulp-cells-in-vitro/Page1.html F.-M. Huang & Y.-C. ChangDepartment of Prosthodontics, Chung Shan Medical University Hospital, Taichung, Taiwan.School of Dentistry, College of Oral Medicine, Chung Shan Medical University, Taichung, Taiwan.Aim.To investigate the cytotoxicity of five different dentine-bonding agents on human pulp cells in vitro. Conclusions.The influence of the cytotoxicity depended on the materials tested. Dentine-bonding agents have significant potential for pulpal toxicity. muveqqeti@gmail.com (JofER editor) Fri, 24 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/113/1/Matrix-metalloproteinase-8-MMP-8-in-pulpal-and-periapical-inflammation-and-periapical-root-canal-exudates-/Page1.html J.Wahlgren, T. Salo, O.Teronen, H. Luoto, T. Sorsa & L.TjaderhaneFaculty of Medicine and Biomedicum, Oral Pathology Unit/Laboratory Diagnostics, Helsinki University Central Hospital (HUCH), University of Helsinki, Helsinki.Institute of Dentistry, University of Oulu, Oulu University Hospital, Oulu, Medix Biochemica, Kauniainen, Finland.Department of Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Canada.Aim.To study the presence, levels and molecular forms of matrix metalloproteinase (MMP) -8 (collagenase- 2) in pulpal and periapical inï¿¡ammation, and the changes in MMP-8 levels in root-canal exudates during root-canal treatment.Conclusions.The findings demonstrate the presence of MMP-8 in the inflamed pulp and periapical tissue, indicating that MMP-8 has a role in pulpal and periapical inflammation, most likely participating in tissue extracellular matrix degradation. They further indicate that MMP analysis from periapical exudate could be used to indicate and monitor inflammatory activity and thesuccess of treatment in teeth with periapical lesions. muveqqeti@gmail.com (JofER editor) Fri, 24 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/112/1/Supplementary-routes-to-local-anaesthesia/Page1.html J. G. Meechan The Dental School, University of Newcastle upon Tyne, Newcastle upon Tyne, UK.This paper has described supplementary techniques available to provide pulpal anaesthesia. The methods described are useful when conventional techniques fail as all have been shown to increase the incidence of pulpal anaesthesia when used in combination with standard techniques. Knowledge of the various methods is useful as these techniques might be required to provide pain control for teeth that prove difficult to anaesthetize by the operator’s normal route. muveqqeti@gmail.com (JofER editor) Mon, 20 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/111/1/Densinvaginatus-type-III-report-of-a-case-and-10-year-radiographic-follow-up-/Page1.html Goncalves, M. Goncalves, D. P. Oliveira & N. GoncalvesDepartment of Oral Diagnosis and Dentomaxillofacial Surgery, Division of Dentomaxillofacial Radiology, Araraquara Dental Schoolâ€"UNESP, Brazil.Department of Endodontics and Department of Oral Diagnosis, Division of Dentomaxillofacial Radiology, Piracicaba Dental Schoolâ€"UNICAMP, Brazil.Aim.The purpose of this article is to report the 10-year follow-up of a right mandibular central incisor with ‘dens invaginatus’ that was root filled.Key learning points.Both clinical and radiographic examinations are necessary to determine morphological features of teeth before root-canal treatment. Sensibility testing to determine the pulp condition is critical prior to treatment. muveqqeti@gmail.com (JofER editor) Sat, 18 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/110/1/Effect-of-sterilization-on-the-cutting-efficiency-of-PVD-coated-nickel-titanium-endodontic-instruments/Page1.html E. SchaferDepartment of Operative Dentistry, University of Munster, Munster, Germany.Aim.To investigate alterations in cutting efficiency when conventional and titanium nitride (TiN) coated nickel-titanium (NiTi) K-files were exposed to repeated sterilization using an autoclave. Conclusions.Within the limitation of this in vitro study, repeated cycles of sterilization under autoclave or exposure to NaOCl prior to repeated sterilization did not alter the cutting efficiency of TiN-coated NiTi instruments. On the contrary, sterilized uncoated files showed a significant loss of cutting efficiency in comparison with instruments that were not sterilized. muveqqeti@gmail.com (JofER editor) Thu, 09 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/109/1/The-effects-of-dentine-pretreatment-on-the-adhesion-of-root-canal-sealers/Page1.html I.M. Saleh, I.E. Ruyter, M. Haapasalo & D. OrstavikNIOM, Scandinavian Institute of Dental Materials.Department of Endodontics, Institute of Clinical Dentistry, University of Oslo, Norway.Aim.The adhesion of five root-canal sealers to dentine and gutta-percha was studied. The effects of various dentine pretreatments on adhesion were also investigated. Conclusions.The sealers varied markedly in their adhesion to dentine and gutta-percha. The effects of the various dentine pretreatments on adhesion differed amongst the sealer types. Pretreatment with E DTA showed no effect or produced weaker bonds than controls, suggesting that removal of the smear layer may impair sealer adhesion to dentine. Phosphoric and citric acid pretreatments increased adhesion to a zincoxide-eugenol-based sealer. Consideration should, therefore, be given to appropriate selection of dentine pretreatment for various sealer types. muveqqeti@gmail.com (JofER editor) Wed, 08 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/108/1/Immunohistochemical-localization-of-cyclooxygenase-2-in-radicular-cysts/Page1.html C.-H. Tsai, F.-M. Huang, L.-C.Yang, M.-Y.Chou & Y.-C. ChangDepartment of Oral Pathology, Department of Dentistry, Chung Shan Medical University Hospital, and 3School of Dentistry, Chung Shan Medical University, Taichung, Taiwan.Aim.The purpose of this study was to investigate the expression of cyclooxygenase-2 (COX-2) in radicular cysts. Conclusions.In the present study, immunoreactivity of COX-2 was expressed in the lining epithelium and subepithelial fibroblasts, macrophages and endothelial cells in all radicular cyst specimens. COX-2 expression was also noted in the endothelial cells of some small capillaries in the fibrous connective tissue wall with a marked inflammatory cell infiltrate. Moreover, COX-2 expression is significantly higher in radicular cysts. Taken together, COX-2 expression may play an important role in the pathogenesis of radicular cysts. muveqqeti@gmail.com (JofER editor) Fri, 03 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/107/1/Surface-analysis-of-ProFile-instruments-by-scanning-electron-microscopy-and-X-ray-energy-dispersive-spectroscopy-a-preliminary-study/Page1.html R. C. Martins, M. G. A. Bahia & V.T. L. BuonoDepartment of Restoration Dentistry, Faculty of Dentistry, Department of Metallurgical and Materials Engineering, Engineering School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.Aim.The purpose of this preliminary study was to analyze surface irregularities on ProFile nickel-titanium (NiTi) rotary instruments before use, after sterilization by two different methods and after instrumentation of molar root canals. Conclusions.During canal preparation, dentine adhered to surface deposits found on new ProFile instruments. This potential problem indicates a need to re-evaluate the process employed for machining these instruments and to review the cleaning methods currently in use. muveqqeti@gmail.com (JofER editor) Fri, 03 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/106/1/Comparison-of-Diaket-and-MTA-when-used-as-root-end-filling-materials-to-support-regeneration-of-the-periradicular-tissues-/Page1.html J. D. Regan, J. L. Gutmann & D. E.WitherspoonDepartment of Restorative Sciences, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, TX, USA.Private Practice Limited to Endodontics, Dallas, TX, USA.Aim.The objective of this study was to evaluate on a comparative basis the potential for mineral trioxide aggregate (MTA) and Diaket to promote periradicular tissue regeneration when used as surgical root-end filling materials. Conclusions.Both Diaket and MTA can support almost complete regeneration of the periradicular periodontium when used as root-end filling materials in periradicular surgery on noninfected teeth. muveqqeti@gmail.com (JofER editor) Fri, 03 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/105/1/Micro-tensile-bond-strengths-of-bonding-agents-to-pulpal-floor-dentine/Page1.html K. Kijsamanmith, S.Timpawat, C.Harnirattisai & H. H. MesserDental Section, Donjedi Hospital, Supanburi Province, Bangkok, Thailand.Department of Operative Dentistry, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.School of Dental Science, The University of Melbourne, Melbourne, Australia.Aim.The purpose of this study was to characterize the dentine surface of the pulpal floor and to determine the micro-tensile bond strengths of two dentine adhesive systems used in conjunction with a resin composite core material to pulpal floor dentine. Conclusions.Bonding to pulpal floor dentine was weaker than previously reported for cut coronal dentine. The self etching priming system bonded more strongly than the ‘one-bottle’ system. In view of the irregular surface morphology and absence of a smear layer, etching conditions may need to be adapted for bonding to pulpal floor dentine. muveqqeti@gmail.com (JofER editor) Sat, 27 Sep 2008 00:00:00 -0500