نتایج جستجو برای: apical

تعداد نتایج: 30144  

Journal: :iranian endodontic journal 0
zahed mohammadi department of endodontics, dental school, shahid sadoughi university of medical sciences, yazd, iran abbasali khademi department of endodontics, dental school, isfahan university of medical sciences, isfahan, iran

introduction: all instrumentation techniques have been reported to be associated with extrusion of infected debris. the aim of this study was to evaluate the number of bacteria extruded apically from extracted teeth ex vivo after canal instrumentation using the two engine-driven techniques utilizing nickel-titanium instruments (flex master and mtwo). materials and methods: seventy extracted max...

Journal: :journal of dentistry, tehran university of medical sciences 0
l. khojastepour associate professor, department of radiology, school of dentistry, shiraz university medical science p. bronoosh assistant professor, department of radiology, school of dentistry, shiraz university medical scienc m. azar assistant professor, department of endodontics, school of dentistry, shiraz university medical scien

the aim of this case report was to present a case of multiple idiopathic apical root resorption which is a rare condition in a 17-year-old adult male. external root resorption of the permanent teeth is a multifactorial process. well-recognized causes of apical root resorption in permanent teeth include orthodontic therapy, trauma, periapical or periodontal inflammation, tumors, cysts, occlusal ...

Journal: :مجله دانشکده دندانپزشکی اصفهان 0
ar - farhad gh javadi

introduction: for a successful root canal treatment, canal must be obturated apically, coronally and laterally to prevent microleakage and canal reinfection. cold lateral condensation is the most popular method of canal obturation; an easy method with a controlled filling. cold lateral technique disadvantages are presence of void, possible vertical root fracture, and absence of a homogenous and...

Journal: :journal of dental research, dental clinics, dental prospects 0
sonal soi suman yadav sumeet sharma mohit sharma

background and aims. during root canal preparation, debris extruded beyond the apical foramen may result in periapical inflammation and postoperative pain. to date no root canal preparation method has been developed that extrudes no periapical debris. the purpose of this study was to identify a system leading to minimal extrusion of debris from the apical foramen. the study was conducted to com...

Journal: :مجله دانشکده دندانپزشکی اصفهان 0
m - aminozarbian m - feizianfard l bagheri

introduction: the effect of apical patency on apical seal is very important in canal preparation. the effect of apical patency on seal of this area was evaluated in this study. methods and materials: in this experimental in vitro study, 90 single rooted mature intact human teeth were cut at cej and were divided in two test groups with 40 each and two control groups with 5 each. canal preparatio...

Journal: :dental research journal 0
mandana naseri payam paymanpour ali kangarloo sahar haddadpur omid dianat mohammad ali ketabi

background: the aim of this study was to evaluate apical transportation and centering ability of single-fi le instruments, waveone primary, with full rotation versus reciprocation movement using cone-beam computed tomography (cbct) analysis in curved mesiobuccal (mb) root canal of human mandibular molars. materials and methods: thirty mb canals of mandibular molars were randomly divided into tw...

Journal: :iranian endodontic journal 0
zahra sadat madani azam haddadi sina haghanifar ali bijani

introduction: due to the importance of apical transportation during root canal preparation, the aim of the current study was to use cone-beam computed tomography (cbct) to assess the extent of apical transportation caused by protaper and mtwo files. methods and materials: forty extracted maxillary first molars with 19-22 mm length and 20-40 degrees of curvature were selected. the mesiobuccal ca...

Journal: :iranian endodontic journal 0
zohreh khalilak department of endodontics, dental school, islamic azad university/ iranian center for endodontic research, tehran, iran arjang fallahdoost department of endodontics, dental school, islamic azad university/ iranian center for endodontic research, tehran, iran bahareh dadresanfar department of endodontics, dental school, islamic azad university/ iranian center for endodontic research, tehran, iran gholamreza rezvani general practitioner, tehran, iran

introduction: we aimed to compare apical canal transportation of extracted teeth and two types of simulated resin blocks. materials and methods: mesiobuccal root of extracted maxillary molars, high hardness simulated resin blocks (knoop hardness=40) and low hardness simulated resin blocks (knoop hardness=22) were prepared with k-files using step-back technique (n=15 canals in each group). doubl...

Introduction: The aim of this study was to assess the fracture strength of immature single-rooted teeth restored with fiber post and apical plug. Materials &Methods: In this experimental study, fifty mandibular premolars were divided into five groups. The coronal and apical portions were cut to obtain15±1 mm root lengths and cleaning &shaping were performed. Peeso reamer #4 was passed t...

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