نتایج جستجو برای: human extracted molars

تعداد نتایج: 1766142  

Journal: :iranian endodontic journal 0
hadi mokhtari mahdi niknami hamidreza mokhtari zonouzi aydin sohrabi negin ghasemi amir akbari golzar

introduction: the aim of the present in vitro study was to compare the accuracy of cone-beam computed tomography (cbct) in determining root canal morphology of mandibular first molars in comparison with staining and clearing technique. methods and materials: cbct images were taken from 96 extracted human mandibular first molars and the teeth were then evaluated based on vertucci’s classificatio...

2014
Armita Rouhani Ali Bagherpour Majid Akbari Majid Azizi Amirhosein Nejat Neda Naghavi

INTRODUCTION The aim of this in vitro study was to identify the root and canal morphology of maxillary first and second molars in Iranian population by taking and analyzing cone-beam computed tomography (CBCT) scans. METHODS AND MATERIALS Extracted maxillary first (n=125) and second (n=125) molars were collected from native Iranians and scanned by using a CBCT scanner. The number of roots and...

Journal: :avicenna journal of dental research 0
ar. navvab azam assistant professor, department of oral and maxillofacial surgery, faculty of dentistry, yazd university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید صدوقی یزد (shahid sadooghi university of medical sciences) f. ezoddini assistant professor, department of oral radiology, faculty of dentistry, yazd university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید صدوقی یزد (shahid sadooghi university of medical sciences) m. khalesi ost graduate student of prosthodontics, faculty of dentistry, hamadan university of medical scien cesسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) l. gholami post graduate student of prosthodontics, faculty of dentistry, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) a. momtaz dentist

statement of the problem this study was designed to investigate the complications after surgical removal of mandibular third molars. patients and methods six hundreds and ninety eight lower third molars among 450 patients surgically extracted by general dentists from april 2005 to april 2006 were selected for this study. data were recorded by completing questionnaires regarding post surgical co...

Journal: :iranian endodontic journal 0
armita rouhani ali bagherpoor majid akbari majid azizi amirhosein nejat neda naghavi

introduction: the aim of this study was to identify the root and canal morphology of maxillary first and second molars in iranian population by taking and analyzing cone-beam computed tomography (cbct) scans. methods and materials: extracted maxillary first ( n =125) and second ( n =125) molars were collected from native iranians and scanned by using a cbct scanner. the number of roots and conf...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2008
Delia S Brauer Kuniko Saeki Joan F Hilton Grayson W Marshall Sally J Marshall

OBJECTIVES Extracted teeth used in dental research need to be considered infective and hence be sterilized without the materials' properties being altered. This study examined the effect of gamma radiation on the nano-mechanical properties of dentin and enamel of extracted human third molars. METHODS Whole teeth were sterilized using gamma radiation doses of 7 kGy and 35 kGy, respectively; te...

Journal: :iranian endodontic journal 0
zohreh ahangari department of endodontics, dental school, shahid beheshti university of medical sciences, tehran, iran. [email protected] mahdieh karami member of shahid kalantari clinic, tehran, iran

introduction: perforations of the pulpal floor create problems during endodontic treatment and often results in secondary periodontal involvement with eventual loss of teeth. the purpose of this study was to evaluate the ability of mineral trioxide aggregate (mta), amalgam, zinc oxide and eugenol (zoe) and portland cement to seal furcal perforations in extracted human molars using dye penetrati...

Journal: :European journal of orthodontics 2000
K Ith-Hansen I Kjaer

The purpose of the present study was to investigate persistent primary second molars in a group of young people in their late twenties with agenesis of one or two second premolars. In 1982-83 it was decided, in connection with the orthodontic evaluation of 25 patients, to allow 35 primary molars (one or two in each patient) to remain in situ. All patients had mixed dentitions and agenesis of on...

Journal: :journal of lasers in medical sciences 0
liu ying nanfang hospital, southern medical university, colleg of stomatology, southern medical university jie gao department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. yan gao center of oral implantology, guangdong provincial stomatological hospital, southern medical university,510280 guangzhou, p.r. china. shuaimei xu department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. xueling zhan department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china. buling wu department of stomatology, nanfang hospital, colleg of stomatology, southern medical university,510515 guangzhou, p.r. china.

introduction: to investigate the ultrastructural changes of dentin irradiated with 980-nm diode laser under different parameters and to observe the morphological alterations of odontoblasts and pulp tissue to determine the safety parameters of 980-nm diode laser in the treatment of dentin hypersensitivity (dh). methods: twenty extracted human third molars were selected to prepare dentin discs. ...

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