Endodontic Files
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Penetration of bioceramic and epoxy-resin endodontic cements into lateral canals
Abstract: The aim of the present study was to assess the penetration capacity of two endodontic cements, Endosequence BC Sealer and AH Plus, in artificial lateral canals. Twenty-six two-rooted, maxillary first premolars were instrumented to size 40.06 using K3 files. In each root, six lateral canals of two diameters (0.06 and 0.10 mm) were created with a wor
Braz. oral res.. Publicado em: 27/05/2019
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2. Drying protocol influence on the bond strength and apical sealing of three different endodontic sealers
Abstract The aim of this study was to evaluate the influence of drying protocols (DP) on the apical sealing (AS) and on the bond strength (BS) of teeth filled with different sealers. The root canals of one hundred and fifty-six roots of maxillary canines were prepared with Reciproc rotary files (R50). The teeth were randomly divided into four groups (n = 39)
Braz. oral res.. Publicado em: 20/05/2016
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3. Epidemiological evaluation of apical periodontitis prevalence in an urban Brazilian population
The present study aimed to assess the prevalence of apical periodontitis (AP) in an urban Brazilian population according to gender, age group and tooth type. Data were collected from clinical files containing the medical and dental histories and periapical radiographs of 1,126 patients treated at the School of Dentistry at Universidade do Estado do Rio de Ja
Braz. oral res.. Publicado em: 10/03/2015
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4. A finite element study on the mechanical behavior of reciprocating endodontic files
AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Rea
Braz. J. Oral Sci.. Publicado em: 2015-03
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5. A titration model for evaluating calcium hydroxide removal techniques
Objective Calcium hydroxide (Ca(OH)2) has been used in endodontics as an intracanal medicament due to its antimicrobial effects and its ability to inactivate bacterial endotoxin. The inability to totally remove this intracanal medicament from the root canal system, however, may interfere with the setting of eugenol-based sealers or inhibit bonding of resin
J. Appl. Oral Sci.. Publicado em: 2015-02
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6. Endodontic filling removal procedure: an ex vivo comparative study between two rotary techniques
In this study, we compared the ex vivo removal capacity of two endodontic rotary techniques and determined whether there was a significant quantitative difference in residual material when comparing root thirds. Forty extracted molars were used. The palatal roots were selected, and the canals were prepared using a step-back technique and filled using a later
Braz. oral res.. Publicado em: 2013-12
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7. Experimental evaluation of cyclic fatigue resistance of four different nickel-titanium instruments after immersion in sodium hypochlorite and/or sterilization
NiTi instruments have a high risk of separation due to torsional or flexural fatigue (cyclic fatigue). Chemomechanical preparation, cleaning procedures, chemical disinfection and sterilization cause the corrosion of endodontic instruments that may weaken the fracture resistance of the instruments. Objective To assess the effects of NaOCl immersion and auto
J. Appl. Oral Sci.. Publicado em: 2013-12
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8. Micro-CT assessment of two different endodontic preparation systems
The aim of this study was to compare two endodontic preparation systems using micro-CT analysis. Twenty-four one-rooted mandibular premolars were selected and randomly assigned to two groups. The samples (n = 12) of Group 1 were prepared using the ProTaper Universal rotary system, while Group 2 (n = 12) was prepared using the EndoEZE AET system complemented
Braz. oral res.. Publicado em: 2013-02
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9. Avaliação da eficácia da desinfecção de instrumentos usados durante o período transoperatório do tratamento endodôntico / Evaluation of the desinfection efficacy of instruments used during the transoperatory period in endodontic treatment
This investigation aimed to evaluate the antimicrobial efficacy of disinfectant agents used to maintain the disinfection of endodontic instruments during the transoperatory period in endodontic treatment. The antimicrobial activity of disinfectants isopropyl alcohol, acetone and peracetic acid were evaluated upon planktonic micro-organisms by time kill assay
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/01/2012
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10. Assessment of geometrical characteristics of dental endodontic micro-instruments utilizing X-ray micro computed tomography
OBJECTIVE: The aim of this study was to quantify the surface area, volume and specific surface area of endodontic files employing quantitative X-ray micro computed tomography (mXCT). MATERIAL AND METHODS: Three sets (six files each) of the Flex-Master Ni-Ti system (Nº 20, 25 and 30, taper .04) were utilized in this study. The files were scanned by mXCT. The
J. Appl. Oral Sci.. Publicado em: 2012-12
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11. Dental students' perceptions about the endodontic treatments performed using NiTi rotary instruments and hand stainless steel files
Este estudo avaliou a percepção de alunos de graduação de uma Faculdade de Odontologia brasileira sobre os tratamentos endodônticos realizados utilizando instrumentos rotatórios de níquel-titânio (NiTi) e manuais de aço-inoxidável. Os dados foram coletados por meio de um questionário semi-estruturado aplicado aos alunos de graduação matriculados
Braz. Dent. J.. Publicado em: 2012
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12. Avaliação da permeabilidade dentária de dentes submetidos à reintervenção endodôntica quando obturados com diferentes cimentos / Evaluation of the permeability of dental teeth underwent reintervention when filled with different endodontic cements
The purpose of this study was to evaluate ex vivo the permeability of root canal dentin walls after the removal of three different combinations of filling materials. To this end, 36 extracted human single-rooted premolars, with similar length and anatomy, had surgery access to the pulp chamber, root canal preparation was performed to F4 ProTaper instruments
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/09/2011