Articles - Endodontic Articles 14 en-us http://endodonticsjournal.com N/A http://endodonticsjournal.com muveqqeti@gmail.com 20 http://endodonticsjournal.com/articles/144/1/Long-term-survival-of-primary-root-canal-treatment-carried-out-in-a-dental-teaching-hospital/Page1.html G. S. P. Cheung & T. K. Chan Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong.Aim.This study aimed to examine clinically and radiographically the survival of primary root canal treatment completed in a dental teaching hospital between 10 and 20 years previously. Conclusions.There was a nonlinear decline in the cumulative survival probability of primary root canal treatment. Tooth type, preoperative periapical status and type of post and final restoration significantly affected the long-term survival of the treated teeth. muveqqeti@gmail.com (JofER editor) Wed, 21 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/143/1/Chemical-and-antimicrobial-properties-of-calcium-hydroxide-mixed-with-irrigating-solutions/Page1.html S. Haenni, P. R. Schmidlin, B. Mueller, B. Sener & M. ZehnderDivision of Endodontology, Department of Preventive Dentistry, Cariology, and Periodontology, Center for Dental Medicine, University of Zurich, Zurich, Switzerland.Swiss Federal Institute for Environmental Science and Technology (EAWAG), Kastanienbaum, Switzerland.Swiss Federal Institute of Technology (ETH), Limnological Research Center, Kastanienbaum, Switzerland.Aim.Chemical and antimicrobial effects of paste-like suspensions of calcium hydroxide (Ca(OH)2) powder with chlorhexidine (CHx), sodium hypochlorite (NaOCl) or iodine potassium iodide (IPI) solutions were tested and compared to conventional Ca(OH)2/ saline paste. Conclusions.The ability to raise the pH in root dentine over time was maintained when Ca(OH)2 powder was mixed with aqueous solutions of IPI, NaOCl or CHx digluconate. In paste-like suspensions, Ca(OH)2 powder reduced the immediate antimicrobial efficacy of CHx. No synergistic effects were recorded between Ca(OH)2 and IPI or NaOCl. Under the conditions of this study, mixing Ca(OH)2 powder with the irrigating solutions did not provide an increased antimicrobial effect compared to a conventional Ca(OH)2/saline medication. muveqqeti@gmail.com (JofER editor) Tue, 13 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/142/1/ProTaper-rotary-root-canal-preparation-assessment-of-torque-and-force-in-relation-to-canal-anatomy/Page1.html O. A. Peters, C. I. Peters, K. Schonenberger & F. BarbakowEndodontic Division, Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, USA.Endodontic Department, University of The Pacific Dental School, San Francisco, USA.Division of Endodontology, Department of Preventive Dentistry, Periodontology and Cariology, University of Zurich, Switzerland.Aim.To investigate physical parameters for ProTaper nickel-titanium (NiTi) rotary instruments whilst preparing curved canals in maxillary molars in vitro.Conclusions.Whilst high forces were used in some cases, no ProTaper instrument fractured when a patent glide path was present. There were significant positive correlations between canal geometry and physical parameters during shaping. muveqqeti@gmail.com (JofER editor) Mon, 12 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/141/1/ProTaper-rotary-root-canal-preparation-effects-of-canal-anatomy-on-final-shape-analysed-by-micro-CT/Page1.html O. A. Peters, C. I. Peters, K. Schonenberger & F. BarbakowEndodontic Division, Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, USA.Endodontic Department, University of The Pacific Dental School, San Francisco, USA.Division of Endodontology, Department of Preventive Dentistry, Periodontology and Cariology, University of Zurich, Switzerland.Aim.To evaluate the relative performance of ProTaper nickel-titanium (Ni-Ti) instruments shaping root canals of varying preoperative canal geometry. Conclusions.Canals in maxillary molars were prepared in vitro using ProTaper instruments without major procedural errors. These instruments may be more effective in shaping narrow canals than wider, immature ones. muveqqeti@gmail.com (JofER editor) Mon, 12 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/140/1/Biocompatibility-of-dental-materials-used-in-contemporary-endodontic-therapy-a-review-Part-2-Root-canal-filling-materials/Page1.html C. H. J. Hauman & R. M. LoveDepartments of Oral Rehabilitation and Stomatology, School of Dentistry, University of Otago, Dunedin, New Zealand.Root-canal-filling materials are either placed directly onto vital periapical tissues or may leach through dentine. The tissue response to these materials therefore becomes important and may influence the outcome of endodontic treatment. This paper is a review of the biocompatibility of contemporary orthograde and retrograde root-canal-filling materials. muveqqeti@gmail.com (JofER editor) Mon, 12 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/139/1/Biocompatibility-of-dental-materials-used-in-contemporary-endodontic-therapy-a-review-Part-1-Intracanal-drugs-and-substances/Page1.html C. H. J. Hauman & R. M. LoveDepartments of Oral Rehabilitation, and Stomatology, School of Dentistry, University of Otago, Dunedin, New Zealand.Irrigation solutions and intracanal medicaments are used within the root canal to clean and aid in disinfecting the dentinal walls. Although these materials are intended to be contained within the root canal, they invariably contact the periapical tissues, either through inadvertent extrusion through the apex or leaching. This paper is a review on the methodology involved in biocompatibility testing followed by a discussion on biocompatibility of contemporary intracanal drugs and substances used in endodontics. muveqqeti@gmail.com (JofER editor) Wed, 07 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/138/1/Histological-evaluation-of-teeth-with-hyperplastic-pulpitis-caused-by-trauma-or-caries-case-reports/Page1.html M. K. Caliskan, F. Oztop & G. Caliskan Department of Endodontology, School of Dentistry, Ege University, Izmir, Turkiye.Department of Pathology, Faculty of Medicine, Ege University, Dental Health and Oral Hygiene Centre, Alsancak, Izmir, Turkiye.Aim.The purpose of this histological study was to examine teeth with hyperplastic pulpitis caused by trauma or caries. Key learning points.Hyperplastic pulpitis is a type of irreversible chronic open pulpitis. Young permanent teeth with hyperplastic pulpitis caused by trauma or caries have a great inherent defensive capacity to heal. muveqqeti@gmail.com (JofER editor) Wed, 07 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/137/1/A-preliminary-analysis-of-the-morphology-of-lateral-canals-after-root-canal-filling-using-a-tooth-clearing-technique/Page1.html M.Venturi, C. Prati, G. Capelli, M. Falconi & L. BreschiPrivate Practice, Bologna, Dipartimento di Scienze Odontostomatologiche, University of Bologna, Bologna, Italy.Dipartimento di Scienza e Societa, University of Cassino, Cassino, Italy.Dipartimento di SAU e FAL, University of Bologna, Bologna, Italy. Aim.This study used a modified tooth-clearing technique to allow observation of accessory canals following filling with a warm gutta-percha technique and one of two endodontic cements. Conclusions.The modified tooth-clearing technique allowed observation of fine morphological details in all specimens. Effective gutta-percha filling was evident in most of the wide coronal lateral canals whilst the apical narrow ramifications were often incompletely filled by cement. Overall AH-Plus demonstrated better diffusion into lateral accessory canals compared to Pulp Canal Sealer. muveqqeti@gmail.com (JofER editor) Tue, 06 Jan 2009 00:00:00 -0600 http://endodonticsjournal.com/articles/135/1/Short-term-periradicular-tissue-response-to-mineral-trioxide-aggregate-MTA-as-root-end-filling-material/Page1.html N. Economides, O. Pantelidou, A. Kokkas & D. Tziafas Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Greece.Aim.The aim of the present study was to evaluate the short-term response of periradicular tissues to MTA when used as a root-end filling material in ideal tissue conditions. Conclusions.MTA is a biocompatible material that stimulates periradicular tissue repair at the root-end situation; however, the nature of the newly formed tissues requires further elucidation. muveqqeti@gmail.com (JofER editor) Sun, 28 Dec 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/136/1/Comparison-of-procedural-errors-resulting-during-root-canal-preparations-completed-by-junior-dental-students-in-patients-using-an-a8-step-methoda-versus-aserial-step-back-techniquea/Page1.html A. Kfir, E. Rosenberg, O. Zuckerman, A. Tamse & Z. Fuss Department of Endodontology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.Aim.To compare procedural errors occurring during preparation of root canals by junior dental students in patients using a new ‘8-step method’ versus traditional ‘serial step-back technique’. Conclusions.The new ‘8-step method’ resulted in fewer procedural errors than the traditional ‘serial step-back technique’ when junior students prepared root canals in patients. muveqqeti@gmail.com (JofER editor) Sat, 27 Dec 2008 00:00:00 -0600