نتایج جستجو برای: file instrumentation

تعداد نتایج: 75660  

Journal: :Australian dental journal 1999
T V Lam D J Lewis D R Atkins R H Macfarlane R M Clarkson M G Whitehead P J Brockhurst A J Moule

The purpose of this project was to observe the amount of apical and mid-curve transportation produced by a range of nickel titanium (NiTi), titanium alloy and stainless steel (SS) files. Tests were carried out in simulated curved root canals produced in epoxy resin blocks. Seven commercially available file types were tested using sizes 15 to 40. Instrumentation was carried out to 1 mm beyond th...

متن کامل
Journal: :Journal of endodontics 2016
Ana Grasiela da Silva Limoeiro Antônio Henrique Braitt Dos Santos Alexandre Sigrist De Martin Augusto Shoji Kato Carlos Eduardo Fontana Giulio Gavini Laila Gonzales Freire Carlos Eduardo da Silveira Bueno

INTRODUCTION Cleaning and shaping without making procedural errors have always been a challenge in endodontics, particularly when the root canals are curved. Several rotary instruments have been developed to minimize such errors. The purpose of this study was to compare the shaping ability of 2 rotary file systems, BioRace (BR; FKG, La Chaux-de-Fonds, Switzerland) and ProTaper Next (PTN; Dentsp...

متن کامل
Journal: :Journal of Conservative Dentistry 2015

متن کامل
2016
Maryam Vossoghi Mitra Vossoghi Shahriar Shahriari Farhad Faramarzi Rasoul Yousefi Mashouf Maryam Farhadian

INTRODUCTION This in vitro study aimed to assess the effectiveness of a single-file rotary system (OneShape) in reduction of intracanal bacteria. METHODS AND MATERIALS Eighty one single-rooted mandibular first premolars with single canals were used. Six samples were selected as aseptic control group. Seventy five remaining specimens were infected by Enterococcus faecalis and incubated for 72 ...

متن کامل
Journal: :International endodontic journal 2014
J M Tinoco G De-Deus E M B Tinoco F Saavedra R A S Fidel L M Sassone

AIM To evaluate ex vivo, apical bacterial extrusion associated with two reciprocating single-file systems (WaveOne and Reciproc) compared with a conventional multifile rotary system (BioRace). METHODOLOGY Forty-five human single-rooted mandibular incisors were used. Endodontic access cavities were prepared, and root canals were contaminated with an Enterococcus faecalis suspension. Following ...

متن کامل
ژورنال: تحقیق در علوم دندانپزشکی 2020
aghaee, saba, Ebrahimzadeh, Elaheh, Tavasoli Hojjati, Sara,

Abstract Background & Aim : This study was aimed to compare the instrumentation time and the amount of debris extruded apically  during root canal preparation using hand files ,Mtwo rotary system and endodontic handpiece  in primary molar teeth. Method & Material : In this experimental study, sixty roots of  primary molars of human teeth were assigned to three groups (for each group, n=20). The...

متن کامل
Journal: :Journal of international oral health : JIOH 2013
M Manjunatha Kini Annapurna V Sudhakar Vc Sunil Kumar Vinay Kumar Hiremath Ankur Shah

INTRODUCTION The aim of any root canal treatment is to achieve a canal free of micro organisms, residual pulp remnants, debris and smear layer for the long term success of the procedure. Manual and automated instrumentation techniques along with proper irrigation regime is used to arrive at the aforementioned goal. Many authors focused on the preparation capabilities of various manual and rotar...

متن کامل
Journal: :journal of dentistry, tehran university of medical sciences 0
mohamad kashefinejad assisstant professor, dental material research center, faculty of dentistry, babol university of medical sciences, babol, iran; department of endodontics, faculty of dentistry, babol university of medical sciences, babol, iran azade harandi assisstant professor, dental material research center, faculty of dentistry, babol university of medical sciences, babol, iran; department of endodontics, faculty of dentistry, babol university of medical sciences, babol, iran saeed eram student research committee, babol university of medical sciences ali bijani social determinants of health research center, health research institute, babol university of medical sciences, babol, iran

objectives: pain is an unpleasant outcome of endodontic treatment that can be unbearable to patients. instrumentation techniques may affect the frequency and intensity of post-endodontic pain. this study aimed to compare single visit post endodontic pain using mtwo (niti) rotary and hand k-file instruments. materials and methods: in this randomized controlled trial, 60 teeth with symptomatic ir...

متن کامل
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...

متن کامل
Journal: :iranian endodontic journal 0
fariborz moazzami leila khojastepour mohammadreza nabavizadeh mina seied habashi

introduction: the aim of this in vitro study was to compare the canal transportation of two single-file engine-driven systems, neoniti and reciproc, using cone-beam computed tomography (cbct). methods and materials: forty-five non-calcified roots with mature apices and apical curvature of 15-30 degrees were selected from extracted human maxillary molars for this study. samples were randomly div...

متن کامل

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید

function paginate(evt) { url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term pg=parseInt(evt.target.text) var data={ "year":filter_year, "term":term, "pgn":pg } filtered_res=post_and_fetch(data,url) window.scrollTo(0,0); } function update_search_meta(search_meta) { meta_place=document.getElementById("search_meta_data") term=search_meta.term active_pgn=search_meta.pgn num_res=search_meta.num_res num_pages=search_meta.num_pages year=search_meta.year meta_place.dataset.term=term meta_place.dataset.page=active_pgn meta_place.dataset.num_res=num_res meta_place.dataset.num_pages=num_pages meta_place.dataset.year=year document.getElementById("num_result_place").innerHTML=num_res if (year !== "unfilter"){ document.getElementById("year_filter_label").style="display:inline;" document.getElementById("year_filter_place").innerHTML=year }else { document.getElementById("year_filter_label").style="display:none;" document.getElementById("year_filter_place").innerHTML="" } } function update_pagination() { search_meta_place=document.getElementById('search_meta_data') num_pages=search_meta_place.dataset.num_pages; active_pgn=parseInt(search_meta_place.dataset.page); document.getElementById("pgn-ul").innerHTML=""; pgn_html=""; for (i = 1; i <= num_pages; i++){ if (i===active_pgn){ actv="active" }else {actv=""} pgn_li="
  • " +i+ "
    • "; pgn_html+=pgn_li; } document.getElementById("pgn-ul").innerHTML=pgn_html var pgn_links = document.querySelectorAll('.mypgn'); pgn_links.forEach(function(pgn_link) { pgn_link.addEventListener('click', paginate) }) } function post_and_fetch(data,url) { showLoading() xhr = new XMLHttpRequest(); xhr.open('POST', url, true); xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); xhr.onreadystatechange = function() { if (xhr.readyState === 4 && xhr.status === 200) { var resp = xhr.responseText; resp_json=JSON.parse(resp) resp_place = document.getElementById("search_result_div") resp_place.innerHTML = resp_json['results'] search_meta = resp_json['meta'] update_search_meta(search_meta) update_pagination() hideLoading() } }; xhr.send(JSON.stringify(data)); } function unfilter() { url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term var data={ "year":"unfilter", "term":term, "pgn":1 } filtered_res=post_and_fetch(data,url) } function deactivate_all_bars(){ var yrchart = document.querySelectorAll('.ct-bar'); yrchart.forEach(function(bar) { bar.dataset.active = false bar.style = "stroke:#71a3c5;" }) } year_chart.on("created", function() { var yrchart = document.querySelectorAll('.ct-bar'); yrchart.forEach(function(check) { check.addEventListener('click', checkIndex); }) }); function checkIndex(event) { var yrchart = document.querySelectorAll('.ct-bar'); var year_bar = event.target if (year_bar.dataset.active == "true") { unfilter_res = unfilter() year_bar.dataset.active = false year_bar.style = "stroke:#1d2b3699;" } else { deactivate_all_bars() year_bar.dataset.active = true year_bar.style = "stroke:#e56f6f;" filter_year = chart_data['labels'][Array.from(yrchart).indexOf(year_bar)] url=/search_year_filter/ var term=document.getElementById("search_meta_data").dataset.term var data={ "year":filter_year, "term":term, "pgn":1 } filtered_res=post_and_fetch(data,url) } } function showLoading() { document.getElementById("loading").style.display = "block"; setTimeout(hideLoading, 10000); // 10 seconds } function hideLoading() { document.getElementById("loading").style.display = "none"; } -->