Articles - Endodontic Articles 2 en-us http://endodonticsjournal.com N/A http://endodonticsjournal.com muveqqeti@gmail.com 20 http://endodonticsjournal.com/articles/21/1/Accuracy-of-a-new-apex-locator-an-in-vitro-study/Page1.html A. Y. Kaufman, S. Keila & M. YoshpeDepartments of Endodontology and Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.Israel Defense Forces. Aim.The purpose of this study was to test in an in vitro model the accuracy of a Bingo 1020 electronic apex locator, to compare the results to those of a well known apex locator, Root ZX, as well as to those of the radiographic method of tooth length determination. Conclusions. Bingo 1020 is a user friendly apex locator and is distinguished by its advanced user interface and the large and clear graphic screen, which shows a realistic display of the file advancement throughout the root canal length. Bingo 1020 measured the tooth length within a clinically acceptable range. The content of the root canal influenced the results of the measurements with both EALs, but the differences were not clinically significant. Measurements obtained using the Bingo 1020 were closer to the actual length than those obtained by the Root ZX but this had no clinical significance. Verification of tooth length through electronic measurements indicated they were closer to the actual length than those obtained radiographically. Radiographic measurements are usually longer than the actual length. muveqqeti@gmail.com (JofER editor) Mon, 11 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/20/1/Interleukin-1-iiand-tumour-necrosis-factor--iilevels-in-periapical-exudates/Page1.html T. Ataoglu, M. Üngör, B. Serpek, S. Haliloglu, H. Ataoglu  & H. AriDepartments of Periodontology,  Endodontics, and Maxillofacial Surgery, Dentistry FacultyDepartment of Biochemistry, Veterinary Faculty, Selcuk University, Konya, Turkey Aim.The aim of this study was to determine IL-1 and TNF- levels in periapical exudates and to evaluate their relationship with clinical and radiological findings. Conclusions.It is apparent that the progression of periapical granulomas is accompanied by the rate at which their surrounding bone is destroyed. The results of the present study suggest that IL-1is more important than TNF-in periapical bone resorbing activity. Within the limitations of this study, it is concluded that periapical exudate levels of both cytokine are not able to reflect periapical disease state. muveqqeti@gmail.com (JofER editor) Sun, 10 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/19/1/A-survey-of-methods-used-for-post-removal-in-specialist-endodontic-practice/Page1.html T. Castrisos & P. V. Abbott School of Dental Science, University of Melbourne, Melbourne, Victoria, Australia Aim.The aims of this study were to determine the attitudes of endodontists toward the risk of root fracture when removing posts and to determine which methods they commonly used to remove posts from root-filled teeth. Conclusions.The general conclusions derived from this survey were: When a post is present in a tooth requiring root canal retreatment, most endodontists surveyed preferred to remove the post rather than perform periapical surgery. Endodontists were only concerned about root fracture in teeth with wide posts and thin root dentine. Root fractures have rarely occurred during post removal, with a frequency of less than 0.002% of the estimated number of posts removed by the endodontists surveyed. The most common method used to remove posts was ultrasonic vibration, whilst the Eggler post remover was the most commonly used device, particularly for removing cast post and cores in anterior teeth. muveqqeti@gmail.com (JofER editor) Sat, 09 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/18/1/Vitality-status-of-microorganisms-in-infected-human-root-dentine/Page1.html R. Weiger, J. de Lucena, H. E. Decker & C. LöstDepartment of Conservative Dentistry, School of Dental Medicine, University of Tübingen, Tübingen, Germany Aim.This experimental study was initiated to establish a method for characterizing the vitality status of bacteria in infected human root dentine by differentiating between viable and dead microorganisms. Conclusions.Fluorescence labelling of bacteria in human root dentine gives valuable additional information about their vitality status compared to the parameter CFU. The method may be suitable for following the fate of bacteria in dentinal tubules, for example in the presence of intracanal dressings. muveqqeti@gmail.com (JofER editor) Fri, 08 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/17/1/Developmental-changes-and-regional-differences-in-histochemical-localization-of-hyaluronan-and-versican-in-postnatal-molar-dental-pulp/Page1.html S. Shibata, S. Yoneda, M. Yanagishita & Y. YamashitaDepartments of Maxillofacial Anatomy,  Cariology and Operative Dentistry and Biochemistry, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan Aim.The main aim of this study was to investigate the developmental changes in the distribution patterns of hyaluronan (HA) and versican in postnatal rat molar dental pulp, in order to confirm the hypothesis that the distribution of both molecules can vary with physiological conditions in the dental pulp. Conclusions.Distribution of hyaluronan and versican in the dental pulp varied with age and also showed regional differences between the coronal and the radicular pulp, and this supports the hypothesis described above. muveqqeti@gmail.com (JofER editor) Thu, 07 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/16/1/Cytotoxicity-of-resin--zinc-oxideaeugenol--and-calcium-hydroxide-based-root-canal-sealers-on-human-periodontal-ligament-cells-and-permanent-V79-cells/Page1.html F.-M. Huang, K.-W. Tai, M.-Y. Chou & Y.-C. ChangDepartment of Dentistry, Chung Shan Medical and Dental College HospitalSchool of Dentistry, Chung Shan Medical and Dental College, Taichung, Taiwan. Aim.The purpose of this study was to determine the cytotoxicity of three different types of root canal sealer on human periodontal ligament (PDL) cells and a permanent hamster cell line (V79 cells). Conclusions.The sensitivity of toxicity depended on the materials tested and the cell culture system used. Thus, the use of both permanent and primary cells is recommended for screening of the cytotoxic effects of root canal sealers. In addition, the results confirmed that root canal sealers constantly dissolve when exposed to an aqueous environment for extended periods, possibly causing moderate or severe cytotoxic reactions. Use of calcium hydroxide-based material as a root canal sealer initially may result in a more favourable response to periradicular tissues. muveqqeti@gmail.com (JofER editor) Wed, 06 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/15/1/A-new-technique-for-the-study-of-periapical-bone-lesions-ultrasound-real-time-imaging/Page1.html E. Cotti, G. Campisi, V. Garau& G. PudduDepartments of Conservative Dentistry and Endodontics and Oral Surgery, School of Dentistry, University of Cagliari.Department of Radiology, Hospital “G. Brotzu”, Cagliari, Italy. Aim.This study describes the use of a real time-ultrasound imaging technique (echography) for the study of periradicular lesions. Conclusions.The antecedent allegation from this abstraction advance that echography is an simple and reproducible address that has the abeyant to supplement accepted radiography in the analysis and aftereffect of all-encompassing periapical lesions. It provides specific advice on the admeasurement of the bane and has a low radiation risk. Furthermore, its abeyant to call the capacity of the lesions (i.e. adulterated against corpuscolated) and their vascularization may become an important agency if authoritative a cogwheel analysis amid lesions of endodontic agent (i.e. granulomas against cysts) and aswell amid added lesions of the maxillary bones. More studies are currently getting agitated out. muveqqeti@gmail.com (JofER editor) Wed, 06 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/14/1/Long-term-reliability-and-observer-comparisons-in-the-radiographic-diagnosis-of-periapical-disease/Page1.html O. Molven, A. Halse, I. FristadDepartment of Odontology, Endodontics, and Radiology, School of Dentistry, University of Bergen, Norway. Aim.The aim of this study was to evaluate and compare the long-term diagnostic consistency of two examiners, an endodontist and a radiologist, and to make comparisons with findings recorded by an observer with more recent scientific and clinical experience in endodontics. the observers. Conclusions.The long-term reliability of the two original observers was judged as being satisfactory. All three observers judged the overall disease status of the material in the same way. The joint discussions of selected cases might reduce observer variation to an acceptable level, avoid a number of false recordings and increase the reliability and validity of the findings. muveqqeti@gmail.com (JofER editor) Mon, 04 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/13/1/Endodontic-implications-of-the-maxillary-sinus-a-review/Page1.html Hauman CHJ, Chandler NP, Tong DC.Departments of Oral Rehabilitation and Stomatology, School of Dentistry, University of Otago, Dunedin, New Zealand. The anatomical and clinical significance of the maxillarysinus in relation to conventional and surgical endodontictherapy is considered. The discussion includes a review on the development, anatomy and physiology of the maxillary sinus, the diagnostic evaluation of the sinus and the differential diagnosis of sinusitis. Endodontic implications of the maxillary sinus include extension of periapical infections into the sinus, the introduction of endodontic instruments and materials beyond the apices of teeth in close proximity to the sinus and the risks and complications associated with endodontic surgery. muveqqeti@gmail.com (JofER editor) Fri, 01 Feb 2002 00:00:00 -0600 http://endodonticsjournal.com/articles/12/1/Endodontic-treatment-of-teeth-associated-with-a-large-periapical-lesion/Page1.html M. D. Ã-ztanDepartment of Endodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey Aim.To report the healing of a large periapical lesion following non-surgical root canal treatment. Summary.A 12-year-old male with a large periapical lesion around the apices of his mandibular incisors is described. The lesion formed after trauma to the mandibular anterior teeth 5 years previously. During root canal treatment, chlorhexidine gluconate was used for irrigation, and calcium hydroxide was used both for the intracanal dressing and as a base of the root canal sealer. Periapical healing was observed 3 months after obturation and continued at the 12-month review. Key learning points.- Root canal treatment, including the use of chlorhexidine gluconate and calcium hydroxide for infection control, led to substantial healing of a large periapical lesion.- This report confirms that large periapical lesions can respond favourably to non-surgical treatment. muveqqeti@gmail.com (JofER editor) Mon, 28 Jan 2002 00:00:00 -0600