05 Febrero 2015
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gregorcuba

Item Type

Conference Paper

Title

Blanqueamiento dental con ozono vs. Blanqueamiento convencional. [Ozone vs tooth whitening conventional bleaching]

Author

Guano Riofrío, Sandy Gabriela

Author

Tamayo Arroyo, Sebastián Andrés

Author

Misquero Jácome, Diana Carolina

Author

Ricardo Herrera, Alex

Date

2011/ 10 / 7

Conference Name

III. Iberoamerican Congress of Oxygen- Ozonetherapy. II. Brazilian Congress of Ozonetherapy. I. Brazilian Congress of Hydro- Ozonetherapy

Place

Rio de Janeiro (Brazil)

Language

English

URL

 

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05 Febrero 2015
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gregorcuba

Item Type

Journal Article

Title

Bond strength of fiber posts after the application of erbium:yttrium-aluminum-garnet laser treatment and gaseous ozone to the root canal

Author

Bitter, Kerstin

Author

Noetzel, Jörn

Author

Volk, Claudia

Author

Neumann, Konrad

Author

Kielbassa, Andrej Michael

Abstract

The aim of the present study was to investigate the effects of antibacterial agents (erbium:yttrium-aluminum-garnet [Er:YAG] laser or gaseous ozone) intended to disinfect root canals on bond strengths of fiber posts compared with canals that were finally irrigated using chlorhexidine (CHX). One hundred forty-four human anterior teeth were divided into three groups (n = 48); root canal instrumentation was performed, and antimicrobial pretreatment was conducted as follows: control group: CHX, group 2: Er:YAG laser, and group 3: gaseous ozone. In all groups, fiber posts were inserted using Panavia F 2.0 (Kuraray, Osaka, Japan), Variolink II (Ivoclar Vivadent, Schaan, Liechtenstein), RelyX Unicem (3M Espe; Seefeld, Germany), or Ketac Cem (3M Espe) (n = 12 each). Push-out bond strengths to root canal dentin were affected by the type of luting agent but not by the antimicrobial pretreatment regimen. However, significant interactions between the luting agent and pretreatment could be observed, and adhesion of the self-adhesive resin cement RelyX Unicem was significantly reduced after using gaseous ozone.

Publication

Journal of Endodontics

Volume

34

Issue

3

Pages

306-309

Date

Mar 2008

Journal Abbr

J Endod

DOI

10.1016/j.joen.2007.12.011

ISSN

0099-2399

Short Title

Bond strength of fiber posts after the application of erbium

URL

http://www.ncbi.nlm.nih.gov/pubmed/18291282

Accessed

2010-12-30 18:59:14

Library Catalog

NCBI PubMed

Extra

PMID: 18291282

 

 

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05 Febrero 2015
Administrator

Added by

gregorcuba

Item Type

Journal Article

Title

Chemical analysis and surface morphology of enamel following ozone application with different concentrations and exposure times

Author

Elsayad, Iman I.

Abstract

This study aimed to determine the effect of different ozone concentrations applied with different exposure times on the chemical composition and the surface morphology of enamel. Twenty human mandibular molars were divided into four groups according to ozone concentration and exposure times. Group A received 90 μg of ozone/ml oxygen for 1 min, group B received 90 μg of ozone/ml oxygen for 2 min, group C received 120 μg of ozone/ml oxygen for 1 min and group D received 120 μg of ozone/ml oxygen for 2 min. The ozone source was from a medical ozone generator equipped with a device to adjust the concentration. Buccal surfaces of teeth were tested before and after ozone application so that each tooth served as a control for itself, using Environmental Scanning Electron Microscope (ESEM) connected to an Electron Dispersive Analytical X-ray (EDAX). Changes in calcium and phosphorus percentage levels were recorded and the Ca/P ratio was calculated. The values were statistically analyzed using the one-way ANOVA test with a level of significance set at P  0.05. No statistical significant difference was found between the control and the tested groups in minerals content or ratio as P > 0.05. ESEM images showed enamel surface roughness with 2 min ozone exposure times. High ozone concentration with prolonged exposure time does not change the chemical composition of enamel. Applying ozone for 2 min alters the surface morphology of enamel causing variable degrees of roughness. Using high ozone concentrations with prolonged exposure times for caries reversal or prevention and for bleaching may be contraindicated if this changes the surface morphology of enamel.

Publication

Journal of Advanced Research

Volume

2

Issue

2

Pages

131-136

Date

April 2011

Journal Abbr

J Advanced Res

Language

English

DOI

10.1016/j.jare.2010.10.001

ISSN

2090-1232

URL

http://www.sciencedirect.com/science/article/pii/S209012321000113X

Accessed

2012-07-17 09:57:57

Library Catalog

ScienceDirect

 

 

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