نتایج جستجو برای: first molar

تعداد نتایج: 1466623  

Journal: :iranian endodontic journal 0
shahrzad nazari department of endodontic, dental school, hamedan university of medical sciences, hamedan, iran. [email protected] farshid mirmotalebi department of prosthodontic, dental school, hamedan university of medical sciences, hamedan, iran

taurodontism is a rare dental anomaly in which the involved tooth has an enlarged and elongated body and pulp chamber with apical displacement of the pulpal floor. endodontic treatment of these teeth is challenging, because it is hard to identify the number of root canals. in this article a case of bilateral involvement of maxillary first molars is presented. endodontic treatment of right maxil...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
elnaz mousavi department of endodontics, school of dentistry, guilan university of medical sciences, rasht, iran maryam mohajer saem guilan university of medical sciences-international branch, research committee member zahra atrkar roshan department of biostatics, guilan university of medical sciences, rasht, iran zahra pourhabibi school of dentistry, guilan university of medical sciences, rasht, iran

introduction: the exact measurement of the root canal length is of great importance in root canal therapy. although, determination of the root canal length through radiography is the most common method, recently electronic apex locators are being used to determine working length and decrease the number of radiographs. the purpose of this study was to compare the accuracy of an electronic apex l...

Journal: :JAMA: The Journal of the American Medical Association 1922

Journal: :avicenna journal of dental research 0
sina shirkavand faculty of dentistry, endodontics department, isfahan (khorasgan) branch, islamic azad university, isfahan, ir iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) maryam zare jahromi faculty of dentistry, endodontics department, isfahan (khorasgan) branch, islamic azad university, isfahan, ir iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) mohammad reza saei faculty of dentistry, endodontics department, isfahan (khorasgan) branch, islamic azad university, isfahan, ir iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) reza ruzbeh faculty of dentistry, endodontics department, isfahan (khorasgan) branch, islamic azad university, isfahan, ir iran; faculty of dentistry, endodontics department, isfahan (khorasgan) branch, islamic azad university, isfahan, ir iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) razieh moghaddam general dentistry, esfahan, ir iran

background successful endodontic treatment is dependent on the knowledge of root canal anatomy. objectives this study aims to investigate the root canal anatomy of mandibular first molars in an iranian population. materials and methods one hundred human mandibular first molars were collected and stored in 5.25% naocl. radiographic images of the teeth were taken in mesial, distal, and buccal asp...

Journal: :iranian endodontic journal 0
kiamars honardar department of endodontics, dental school, shahed university of medical sciences, tehran, iran nahal vesal endodontist, tehran, iran faeze hamze general practitioner, tehran, iran kiumars nazarimoghadam department of endodontics, dental school, shahed university of medical sciences, tehran, iran hossein labaf department of endodontics, dental school, shahed university of medical sciences, tehran, iran laila shakeri department of endodontics, dental school, shahed university of medical sciences, tehran, iran

introduction: this study was carried out to compare the capability of k-files with mtwo rotary file in terms of negotiation as well as depth of penetration in second mesiobuccal (mb2) canal of maxillary first molar. materials and methods: a total of 32 mb2 canal of maxillary first molars having different root curvatures (not more than 30 degree) and root lengths were selected and then detected ...

Journal: :iranian endodontic journal 0
mohammad frough reyhani department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran saeed rahimi department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran shahriar shahi department of endodontics, dental school, tabriz university of medical sciences, tabriz, iran

a mandibular first molar requiring root canal therapy was found with five canals, three mesial canals, and two distal canals. initially, four canals (mesiobuccal, mesiolingual, distobuccal, and distolingual) were identified. the mesiobuccal and mesiolingual canals were found in their normal locations, and a fifth canal was noted between these two. this case demonstrates a rare anatomical config...

Journal: :iranian endodontic journal 0
vahideh asghari saeed rahimi negin ghasemi bita talebzadeh faculty of dentistry , tabriz university of medical sciences ahmad nouroloyuni faculty of dentistry , tabriz university of medical sciences

thorough knowledge of the morphology and internal anatomy of the root canal system is essential, because it determines the successful outcome of endodontic treatment. the main goal of endodontic treatment is to prevent apical periodontitis and/or to promote the healing of periapical lesion. presence of two canals or roots on the palatal side of the first maxillary molar has rarely been reported...

Journal: :iranian endodontic journal 0
zahra sadat madani nika mehraban ehsan moudi ali bijani

introduction: the aim of this study was to evaluate the root canal morphology of mandibular first and second molars using cone-beam computed tomography (cbct) in northern iranian population and also to indicate the thinnest area around root canals. methods and materials: we evaluated cbct images of 154 first molars and 147 second molars. by evaluating three axial, sagittal and coronal planes of...

Journal: :journal of dental materials and techniques 0
mandana naseri assistant professor, department of endodontics, dental school of shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) zohreh ahangari associate professor of endodontics department dental school of shahid beheshti university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) farnoud sharifi endodontics department, dental school, tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) zahra sahebnasagh postgraduate student, department of oral and maxillofacial radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)

introduction: objective: this study aimed to assess the possible variations in root canal anatomy and topography of the apices of first and second maxillary molars. materials and methods: a total of 67 first and second maxillary permanent molars were collected. access cavity was prepared and 2% methylene blue was injected. the teeth were demineralized by 5% nitric acid and cleared with methyl s...

Journal: :iranian endodontic journal 0
mohsen aminsobhani department of endodontics, dental school/dental research center, tehran university of medical sciences, and member of iranian center for endodontic research, tehran, iran. noushin shokouhinejad department of endodontics, dental school/dental research center, tehran university of medical sciences, and member of iranian center for endodontic research, tehran, iran. sholeh ghabraei department of endodontics, dental school/dental research center, tehran university of medical sciences, tehran, iran behnam bolhari department of endodontics, dental school/dental research center, tehran university of medical sciences, tehran, iran abdollah ghorbanzadeh department of endodontics, dental school/dental research center, tehran university of medical sciences, tehran, iran

successful root canal treatment requires adequate knowledge regarding morphologic variations in root canal system of teeth. this report describes a six-canalled mandibular first molar with four mesial root canals requiring endodontic retreatment. the two additional canals in the mesial root were found during retreatment with the aid of illumination and magnification. in conclusion, the possibil...

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