An in Vitro Study of Shear and Tensile Bond Strengths Comparing Mechanically and Chemically Bonded Ceramic Brackets with Three Bonding Agents PDF Download
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Author: Kristian Eric Hyer
Publisher:
ISBN:
Category : Dental bonding
Languages : en
Pages : 230
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Book Description
Author: Kristian Eric Hyer
Publisher:
ISBN:
Category : Dental bonding
Languages : en
Pages : 230
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Book Description
Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1828
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Book Description
Author: George Eliades
Publisher: Springer Science & Business Media
ISBN: 3540285598
Category : Medical
Languages : en
Pages : 201
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Book Description
This book comprehensively reviews bonding to enamel, dentin and cementum and analyses relevant adhesion mechanisms. It is addressed to both the dental researcher and the clinician. Emphasis is placed on the characterization of material interfaces with dental tissues in situ. The volume also stresses the importance of appropriate experimental protocol design in facilitating clinically-relevant research methods, clarifies the mechanisms of adhesion of polymeric materials to hard dental tissues and furnishes a handy reference for routine clinical procedures in restorative and prosthetic dentistry as well as orthodontics. The book introduces important aspects of the chemistry of dental materials and their adaptation to dental hard tissues. It also analyses interfacial phenomena occurring during application of materials, including mechanical properties, and structural-compositional alterations. The text presents the current instrumental approaches in studying related issues and a summary of the current status of theories concerning bonding to dental tissues. This work, in its scope and scientific content, provides an in-depth view of the way in which aesthetic dentistry is currently being practiced.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 482
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Book Description
Author: Alan James Ostertag
Publisher:
ISBN:
Category : Dental adhesives
Languages : en
Pages : 134
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Book Description
Author: Thomas Joseph Weber
Publisher:
ISBN:
Category : Dental adhesives
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 2084
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Book Description
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Author: Kirk Tristan Ripley
Publisher:
ISBN:
Category : Orthodontic appliances
Languages : en
Pages : 218
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Book Description
Author: Boyd O. Whitlock
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Book Description
The purpose of this study was to compare the bond strengths of three adhesive systems (two-paste, no-mix, and one light-activated) when used alone and combined with a porcelain priming agent to bond ceramic brackets to porcelain surfaces. Sixty porcelain specimens were randomly assigned to the six different treatment groups. One half of the groups were bonded with the porcelain priming agent and one of the adhesive systems and the other half with one of the adhesive systems without the priming agent. The shear bond strengths, expressed in megapascals (MPa), of all specimens were tested, using an Instron testing machine, 10 minutes after being bonded. The surface of the porcelain and the bracket base were examined, using the scanning electron microscope (SEM), to determine the bond failure patterns and check the prcelain surface for the presence of cracks and fractures. Across the three different adhesive systems, mean shear bond strength measurements ranged from 6.3-7.5 MPa when the porcelain primer was used and from 1.8-3.8 when the porcelain primer was not used. There was a statistically significant difference within each adhesive between those samples with the priming agent (mean shear bond strength of 6.5 ± 0.8, 7.5 ± 1.0, and 6.3 ± 1.2) and those without the priming agent (mean shear bond strength of 3.8 ± 0.4, 1.8 ± 1.8, nad 2.6 ± 1.3) (p ≤ 0.5). Differences between the three adhesives were not statistically significant (p ≤ .05). Evaluation of the bond failure sites, using the SEM, revealed failures at the porcelain-adhesive interface, within the adhesive and at the bracket-adhseive interface for the porcelain primer samples. The samples that were bonded with the different adhesives only displayed a failure exclusively at the porcelain-adhesive interface. The failure patterns were verified by qualitative energy dispersive x-ray analysis (EDS). It can be concluded from this study that using any of the three adhesive systems combined with the porcelain priming agent will provide sufficient bond strength to withstand normal orthodontic forces and not damage the surface of the porcelain when debonded.
Author: Mark Allen Stieg
Publisher:
ISBN:
Category : Orthodontic appliances
Languages : en
Pages : 302
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Book Description
