Canal Diameter
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Polymicrobial Leakage and Retention of MTA and Portland Cement in a Model of Apexification
Abstract Objective: To evaluate the sealing capacity and retention of apical barriers made with mineral trioxide aggregate (MTA) and Portland cement (PC). Material and Methods: Fifty-six bovine incisors were sectioned 8 mm above and 12 mm below the cement-enamel junction. The root canal was enlarged with a diamond drill to create a standard 2.5 mm diameter
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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2. Effect of sonic and ultrasonic activation on physicochemical properties of root canal sealers
Abstract Objective: To evaluate the effect of ultrasonic and sonic activation on physicochemical properties of AH Plus, MTA Fillapex, ADSeal, GuttaFlow Bioseal, and GuttaFlow 2 sealers. Methodology: Three experimental groups were formed: no activation (NA), ultrasonic activation (UA), and sonic activation (SA). The sealers were manipulated according to the
J. Appl. Oral Sci.. Publicado em: 09/09/2019
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3. Bond strength values of fiberglass post to flared root canals reinforced with different materials
Abstract The aim of this study was to compare in vitro the bond strength (BS) between fiberglass posts and flared root canals reinforced with different materials. The roots of 48 premolars were endodontically treated. After one week, the root canals were prepared to simulate an oversized root canal, except for the positive control group (PCG), which was ceme
Braz. oral res.. Publicado em: 01/03/2018
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4. Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires
Abstract Objective To evaluate the amount of apically extruded debris, percentage of foraminal enlargement and apical foramen (AF) deformation that occurred during root canal preparation with different reciprocation systems: Reciproc, WaveOne (M-Wire), and ProDesign R (Shape Memory Technology Wire) at two different working lengths (WLs): 0.0 and 1.0 mm beyo
J. Appl. Oral Sci.. Publicado em: 18/01/2018
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5. Removal of calcium hydroxide from Weine Type II systems using photon-induced photoacoustic streaming, passive ultrasonic, and needle irrigation: a microcomputed tomography study
ABSTRACT Objective This study compared the effectiveness of Er:YAG laser-activated irrigation (PIPS), passive ultrasonic irrigation (PUI) with EndoUltra and standard needle irrigation (SNI) in the removal of calcium hydroxide [Ca(OH)2] from the mesial roots of Weine Type II mandibular molars. Material and Methods Thirty mandibular molars were screened by
J. Appl. Oral Sci.. Publicado em: 2016-12
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6. Surgical treatment of Denis type B thoracolumbar burst fracture with neurological deficiency by paraspinal approach
We aimed to describe the surgical technique and clinical outcomes of paraspinal-approach reduction and fixation (PARF) in a group of patients with Denis type B thoracolumbar burst fracture (TLBF) with neurological deficiencies. A total of 62 patients with Denis B TLBF with neurological deficiencies were included in this study between January 2009 and Decembe
Braz J Med Biol Res. Publicado em: 03/11/2016
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7. Prevalence and morphometric analysis of three-rooted mandibular first molars in a Brazilian subpopulation
ABSTRACT The knowledge of the internal anatomy of three-rooted mandibular molars may help clinicians to diagnose and plan the root canal treatment in order to provide adequate therapy when this variation is present. Objectives: To determine the prevalence of three-rooted mandibular molars in a Brazilian population using cone beam computed tomography (CBCT)
J. Appl. Oral Sci.. Publicado em: 2016-10
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8. A comparison of two reciprocating instruments using bending stress and cyclic fatigue tests
The aim of this study was to comparatively evaluate the bending resistance at 45º, the static and dynamic cyclic fatigue life, and the fracture type of the WaveOne (Dentsply Maillefer, Ballaigues, Switzerland) 25-08 and Reciproc (VDW, Munich, Germany) 25-08 instruments. A total of 60 nickel-titanium (NiTi) instruments (30 Reciproc and 30 WaveOne) from three
Braz. oral res.. Publicado em: 20/10/2015
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9. Influence of phosphate buffered saline on the bond strength of endodontic cement to dentin
Aim: To analyze the influence of exposure and time of exposure to phosphate buffered saline (PBS) on the push-out bond strength (BS) of Biodentine to dentine.
Methods: Eighty 2-mm-thick dentin discs were obtained from transversal sections of human teeth roots. The space of the canal was enlarged using #2
Braz. J. Oral Sci.. Publicado em: 2015-06
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10. Influência da limpeza mecânica com e sem o uso do microscópio operatório na resistência adesiva intrarradicular / Influence of mechanical cleaning with and without the use of the operating microscope in intraradicular adhesive strength
In endodontic treatment, there is an imperative need to restore the tooth, reestablishing its functions, since there is always a risk of recontamination of the root canal system and fractures. These risks are higher when there is loss of dental structure, requiring intraradicular posts to hold the restoration procedures in place. For the definitive and immed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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11. Rendimento da abÃbora sob dois mÃtodos de irrigaÃÃo, duas qualidades de Ãgua e diferentes nÃveis de potÃssio / Pumpkin income under two methods of irrigation, water quality and two different levels of potassium
The aim of this work was to evaluate the effect of two levels of salinity using well and channel water and levels of potassium applied in furrow and drip irrigation systems on yield and quality of pumpkin fruit. The work was conducted in an area of 64 m x 55 m located in Sector D, Lot 59 of the Curu Pentecoste Irrigated Perimeter, of the Departamento Naciona
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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12. Avaliação in vitro da ação antimicrobiana de três cimentos endodônticos modificados com nanopartículas de prata
One of the functions of the filling of root canals is complete it as airtight as possible, stimulating the repair of periapical tissues and preventing microorganisms able to reinfect the root canal system. So it is necessary that the sealer has some desirable properties. Among these, there is the need to be bactericidal, or at least, be detrimental to bacter
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011