Výsledky vyhledávání - "R Norman, Weller"

Setting Properties and Cytotoxicity Evaluation of a Premixed Bioceramic Root Canal Sealer

Autor: Brian M. Gillen, Franklin Chi Meng Tay, Thomas E. Bryan, Bethany A. Loushine, R. Norman Weller, Robert J. Loushine, David H. Pashley, Stephen W. Looney

Publikováno v: Journal of Endodontics. 37:673-677

Introduction This study investigated the setting time and micohardness of a premixed calcium phosphate silicate–based sealer (EndoSequence BC Sealer; Brasseler USA, Savannah, GA) in the presence of different moisture contents (0–9 wt%). The moist

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7546c234645a2ebeda19b9682beb407b
https://doi.org/10.1016/j.joen.2011.01.003

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Contemporary Methacrylate Resin–based Root Canal Sealers Exhibit Different Degrees of Ex Vivo Cytotoxicity When Cured in Their Self-cured Mode

Autor: Franklin R. Tay, Thomas E. Bryan, Steven Roberts, Jason M. Ames, David H. Pashley, Brian R. Babb, R. Norman Weller, Robert J. Loushine, Mai Sui, Petra E. Lockwood

Publikováno v: Journal of Endodontics. 35:225-228

The cytotoxicity of four methacrylate resin–based sealers was investigated by the 3-(4,5-dimethyl-thiazoyl)-2,5-diphenyl-tetrazolium bromide assay, which measures cell viability by assessing its succinate dehydrogenase activity. The sealers were po

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ab5ff578b39e98f46f300baa3fbf3d1
https://doi.org/10.1016/j.joen.2008.11.008

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Resistance of a 4-META–Containing, Methacrylate-based Sealer to Dislocation in Root Canals

Autor: Bethany A. Loushine, Robert J. Loushine, Sui Mai, Franklin R. Tay, R. Norman Weller, David H. Pashley, Matthew S. Lawson

Publikováno v: Journal of Endodontics. 34:833-837

The dislocation resistance of root fillings created with MetaSEAL, a self-adhesive 4-META-containing methacrylate resin-based sealer, was evaluated. Forty-six incisors were cleaned and shaped using NaOCl and EDTA as irrigants. They were filled with g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4c086b134ce4b7ff4e5cc6b6ac40f68
https://doi.org/10.1016/j.joen.2008.03.028

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Calcium Phosphate Phase Transformation Produced by the Interaction of the Portland Cement Component of White Mineral Trioxide Aggregate with a Phosphate-containing Fluid

Autor: Frederick A. Rueggeberg, Franklin R. Tay, R. Norman Weller, Robert J. Loushine, David H. Pashley

Publikováno v: Journal of Endodontics. 33:1347-1351

The bioactivity of mineral trioxide aggregate (MTA) has been attributed to its ability to produce hydroxyapatite in the presence of phosphate-containing fluids. It is known that stoichiometric hydroxyapatites do not exist in biological systems and do

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08ac9b560ed1d6ceb37b9efd3be3e8b4
https://doi.org/10.1016/j.joen.2007.07.008

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Evaluation of the Quality of the Apical Seal in Resilon/Epiphany and Gutta-Percha/AH Plus–filled Root Canals by Using a Fluid Filtration Approach

Autor: David H. Pashley, R. Norman Weller, Robert J. Loushine, Rakesh Raina, Franklin R. Tay

Publikováno v: Journal of Endodontics. 33:944-947

This in vitro fluid filtration study compared the apical leakage of root canals that were obturated with Resilon/Epiphany (Resilon Research LLC, Madison, CT) or gutta-percha/AH Plus (GP/AH; DENTSPLY Tulsa, Tulsa, OK) sealer using warm vertical conden

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d14672c6a1e03521d9ab09ef1c70a2b
https://doi.org/10.1016/j.joen.2007.05.003

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Metrologic Evaluation of the Surface of White MTA After the Use of Two Endodontic Irrigants

Autor: Franklin R. Tay, Gary M. Whitford, David H. Pashley, Robert J. Loushine, R. Norman Weller, Frederick A. Rueggeberg, Jack B. Smith

Publikováno v: Journal of Endodontics. 33:463-467

This study examined the effects of calcium-depleting endodontic irrigants, ethylenediamine tetra-acetic acid (EDTA) and BioPure MTAD, on the dissolution, surface characteristics, and ultrastructural characteristics of white mineral trioxide aggregate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a86838606ac7f471c7bbd09ebd370a6
https://doi.org/10.1016/j.joen.2006.12.002

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Self-Etching Adhesives Increase Collagenolytic Activity in Radicular Dentin

Autor: Raquel Osorio, Francesca Monticelli, Robert J. Loushine, R. Norman Weller, Franklin Chi Meng Tay, David H. Pashley

Publikováno v: Journal of Endodontics. 32:862-868

Endogenous matrix metalloproteinases (MMPs) release from crown dentin and their activation results in degradation of hybrid layers created by dentin adhesives. This study tested the hypothesis that instrumented intraradicular dentin possesses latent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::910504012296f8456a62afba40cc580e
https://doi.org/10.1016/j.joen.2006.04.005

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Improving the Performance of EndoRez Root Canal Sealer With a Dual-cured Two-Step Self-etch Adhesive. I. Adhesive Strength to Dentin

Autor: Kelli A. Agee, William T. Gillespie, Robert J. Loushine, Franklin R. Tay, Michael D. Doyle, R. Norman Weller, David H. Pashley

Publikováno v: Journal of Endodontics. 32:766-770

This study examined the hypotheses that the use of a self-etching-adhesive improves the adhesion of EndoRez to dentin, and that both techniques are unaffected by the prolonged use of NaOCl when EDTA is used as the final rinse. A tensile bond testing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::810811c65d951f91c259816d3316fb35
https://doi.org/10.1016/j.joen.2005.11.003

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Is An Oxygen Inhibited Layer Required for Bonding of Resin-Coated Gutta-Percha to a Methacrylate-Based Root Canal Sealer?

Autor: Marco Ferrari, Robert J. Loushine, Noriko Hiraishi, R. Norman Weller, Franklin R. Tay, M Vano, Nicoletta Chieffi, David H. Pashley

Publikováno v: Journal of Endodontics. 32:429-433

Removal of the oxygen inhibition layer from the surface of resin-coated gutta-percha cones during packaging has been hypothesized for their weak adhesion to a methacrylate-based root canal sealer, resulting in their frequent delamination from the sea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8c0ffdaf9720831841e8c9864db4350
https://doi.org/10.1016/j.joen.2005.07.005

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Ultrastructure of Smear Layer-Covered Intraradicular Dentin After Irrigation with BioPure MTAD

Autor: R. Norman Weller, W. Trent Gillespie, Robert J. Loushine, David H. Pashley, Franklin Chi Meng Tay, Michael D. Doyle, Nigel M. King

Publikováno v: Journal of Endodontics. 32:218-221

The structure of mechanically instrumented intraradicular dentin after irrigation with NaOCl as the initial rinse and BioPure MTAD as the final rinse were examined from the coronal, middle, and apical parts of root canal walls using transmission elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87d1ffee29cb7662aa5f3a055dc71a72
https://doi.org/10.1016/j.joen.2005.10.035

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