Articles - Endodontic Articles 12 en-us http://endodonticsjournal.com N/A http://endodonticsjournal.com muveqqeti@gmail.com 20 http://endodonticsjournal.com/articles/123/1/A-quantitative-evaluation-of-apical-leakage-of-four-root-canal-sealers/Page1.html F. Kont Cobankara, N. Adanir, S. Belli & D. H. PashleyDepartment of Endodontics, Facultyof Dentistry, Selcuk University, Konya, Turkey.Department of Oral Biology and Maxillofacial Pathology, School of Dentistry, Medical College of Georgia, Augusta, GA, USA. Aim.This in vitro study evaluated the microleakage of root fllings involving four root-canal sealers including AH Plus (De-Trey, Switzerland), RoekoSeal (Roeko, Germany), Ketac-Endo (ESPE, Germany) and Sultan (Sultan Chemists, USA). Conclusions.Root fillings with RoekoSeal in combination with cold lateral condensation technique showed better sealing than those with Ketac-Endo, AH Plus and Sultan sealers after 21 days. The fluid filtration test used in this study gave quantitative results and allowed nondestructive long-term evaluation of specimens. muveqqeti@gmail.com (JofER editor) Sun, 30 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/124/1/Effect-of-calcium-hydroxide-as-a-supplementary-barrier-in-the-radicular-penetration-of-hydrogen-peroxide-during-intracoronal-bleaching-in-vitro/Page1.html T. Lambrianidis, A. Kapalas & M. Mazinis Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.Aim.To examine pH changes in the cervical external root surface, when calcium hydroxide was used as a supplementary barrier to the protective base material during intracoronal bleaching. Conclusion.The placement of Ca(OH)2 as a supplementary barrier during intracoronal bleaching did not have a significant effect in reversing the acidic pH created at the external root surface in vitro. Its potential effect during these procedures in vivo needs to be further investigated. muveqqeti@gmail.com (JofER editor) Sat, 29 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/122/1/Temporization-for-endodontics/Page1.html H. J. Naoum & N. P. Chandler Brindabella Specialist Centre, Dann Close, GARRAN, ACT 2605, Australia. Department ofO ral Rehabilitation, School of Dentistry, University of Otago, Dunedin, New Zealand.  Teeth undergoing root-canal therapy are susceptible to microbial contamination from oral fluids both during and after treatment. With the exception of single-visit treatment, the use of a temporary restoration is mandatory. This review aims to provide an overview of the materials and techniques used for short- and long-term restorations during and immediately after endodontic treatment, and to make clinical recommendations. Further research is necessary to determine the effectiveness of temporary restorations in the conditions oft he oral environment, especially with respect to leakage and functional demands. muveqqeti@gmail.com (JofER editor) Fri, 21 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/121/1/Periapical-lesions-accidentally-filled-with-calcium-hydroxide/Page1.html R. J. G. DeMoor & A. M. J. C. DeWitte Department of Operative Dentistry and Endodontology, Dental School, Ghent University, Ghent University Hospital, Gent, Belgium.Aim.To evaluate the effect of accidental and voluminous calcium hydroxide overextensions into periradicular lesions and tissues on the prognosis of periapical healing. Key learning points.Extensive extrusion of calcium hydroxide into the periapical tissues does not appear to comprise periapical healing. Despite this finding, the deliberate extrusion of dental materials into the apical tissues is not advocated. muveqqeti@gmail.com (JofER editor) Mon, 17 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/120/1/A-simple-model-to-demonstrate-the-electronic-apex-locator/Page1.html A.C. Tinaz, T. Alacam & O. TopuzDepartment of Operative Dentistry and Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.Aim.To describe and evaluate a newly developed model for demonstrating and teaching the use of electronic apex locators. Key learning points.A simple, inexpensive model can be manufactured from plastic dental jaws, natural teeth and alginate impression material to demonstrate electronic working length measurement. The model is stable for many hours and provides consistent results with different concentrations of NaOCl in the canal and various apical diameters. The model is a useful teaching aid but needs further evaluation and refinement before use in research applications. muveqqeti@gmail.com (JofER editor) Fri, 14 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/119/1/A-scanning-electron-microscopic-study-of-dentinal-erosion-by-final-irrigation-with-EDTA-and-NaOCl-solutions/Page1.html W. Niu, T.Yoshioka, C. Kobayashi & H. Suda Pulp Biology and Endodontics, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.Aim.The purpose of this in vitro study was to examine dentinal erosion caused by final irrigation with EDTA and NaOCl. Conclusions.Final irrigation with 6% NaOCl accelerates dentinal erosion following treatment with 15% EDTA. muveqqeti@gmail.com (JofER editor) Wed, 12 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/118/1/Clinical-evaluation-of-the-cleansing-properties-of-the-noninstrumental-technique-for-cleaning-root-canals/Page1.html T. Attin, W. Buchalla, C. Zirkel & A. LussiDepartment of Operative Dentistry, Preventive Dentistry and Periodontology, Georg August University Gottingen, Gottingen, Germany.Department of Operative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Berne, Berne, Switzerland.Aim.The purpose of the present study was to evaluate noninstrumentation technology (NIT) for root-canal cleansing in vivo.Conclusions.The results of the present investigation showed that further modifications of the NIT for cleaning root canals are necessary to achieve sufficient cleanliness of root canals in vivo and to be as effective as previously demonstrated under in vitro conditions. muveqqeti@gmail.com (JofER editor) Tue, 11 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/117/1/Quality-of-preparation-of-oval-distal-root-canals-in-mandibular-molars-using-nickel-titanium-instruments-/Page1.html T. Rodig, M. Hulsmann, M. Muhge & F. Schafers Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Gottingen, Robert-Koch-Street 40, 37075 Gottingen, Germany Aim.The aim of this study was to compare the preparation of oval distal root canals in mandibular molars using three different nickel-titanium (NiTi) instruments: Lightspeed (Lightspeed Inc., San Antonio, TX, USA), ProFile .04 (Maillefer, Ballaigues, Switzerland) and Quantec SC (Tycom, Irvine, CA, USA). Conclusions.The flexibility of the NiTi instruments investigated in this study did not allow controlled preparation of the buccal and lingual extensions of oval root canals. The instruments frequently produced a circular bulge in the canal whilst the buccal and lingual extensions remained unprepared, leaving smear layer and debris. muveqqeti@gmail.com (JofER editor) Thu, 06 Nov 2008 00:00:00 -0600 http://endodonticsjournal.com/articles/116/1/An-in-vitro-investigation-into-the-effects-of-retained-coronal-dentine-on-the-strength-of-a-tooth-restored-with-a-cemented-post-and-partial-core-restoration/Page1.html A. Al-Wahadni & D. L. GutteridgeFaculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.Division of Restorative Dentistry, Leeds Dental Institute, Leeds, UK .Aim.This study aimed to examine the fracture resistance of teeth restored with cast post and partial cores supported by different heights of coronal tooth structure. Conclusions.In this in vitro study, retained coronal buccal dentine improved fracture resistance of teeth restored with partial post and cores when compared to teeth without retained buccal dentine. Teeth with retained buccal dentine of 3 mm had significantly higher resistance to fracture compared to control teeth with post and full cores, whereas longer lengths of retained buccal dentine did not produce statistically significant improvements. Crack formation and propagation were evident midway between buccal and lingual root margin and the junction of partial and dentine cores. muveqqeti@gmail.com (JofER editor) Mon, 27 Oct 2008 00:00:00 -0500 http://endodonticsjournal.com/articles/115/1/Prevalence-of-dilaceration-in-Jordanian-adults/Page1.html A. A. Hamasha,T. Al-Khateeb & A. DarwazehDepartments of Preventive Dentistry and Oral Medicine and Oral Surgery, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.Aim.The purpose of this study was to determine the prevalence of dilaceration in a sample of Jordanian dental patients. Conclusion.Dilaceration is not common, but it is an important dental anomaly that affects all teeth. Recognizing the condition will facilitate endodontic, orthodontic and surgical treatment. muveqqeti@gmail.com (JofER editor) Mon, 27 Oct 2008 00:00:00 -0500