Factors Affecting Bond Strength of Non-mix Orthodontic Adhesive Systems PDF Download
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Author: Lawrence B. Evans
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
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Author: Lawrence B. Evans
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
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Book Description
Author: Lawrence B. Evans
Publisher:
ISBN:
Category : Dental bonding
Languages : en
Pages : 126
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Book Description
Author: Nisha Garg
Publisher: Boydell & Brewer Ltd
ISBN: 9788184487756
Category : Medical
Languages : en
Pages : 528
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Book Description
This new edition is a complete guide to operative dentistry. Beginning with an introduction, physiology, dental caries and tooth preparation, the text also discusses pain and infection control. The following sections examine different operative procedures. New techniques such as minimal intervention dentistry, nanotechnology and lasers; and advances in dental materials are discussed in detail. More than 1200 colour images, illustrations, flow charts and tables are included. Key points Complete guide to operative dentistry Discusses numerous different procedures, and pain and infection control New techniques and advances in materials described in detail More than 1200 colour images, illustrations, flow charts and tables Previous edition published in 2010
Author: Patti Ann Hawkins Jacob
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
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The purpose of this investigation was to evaluate the effects of air-powder polishing on shear bond strength in vitro for two metal bracket adhesive systems currently in use for direct orthodontic bonding procedures. Ninety-six third molar teeth with flattened enamel surfaces were randomly assigned to be bonded with metal brackets using either a two paste or a no-mix orthodontic adhesive resin. Thwelve samples in each treatment group were air-powder polished for 0, 15, 30, or 60 seconds. Each bracket adhesive bond was then tested for shear strength using the Instron Universal Testing Device. Scanning electron microscopy determined the fracture pattern of representative samples from each treatment group. Mean shear bond strength values for each treatment group were calculated and expressed in magapascals (MPa). Values from baseline to 60 seconds varied from 22.9 ± 1.9 MPa to 18.2 ± 4.1 MPa for the two paste system and from 15.5 ± 2.1 MPa to 14.6 ± 1.9 MPa for the no-mix adhesive. Differences between the adhesive systems at all air-powder polishing times were statistically significant (p d".05). Statistical analysis by a two-way ANOVA in combination with the Newman-Keuls Multiple Range Test for pairwise mean comparisons determined a differential effect of air-powder polishing on the bond strength of the two adhesive systems. After 60 seconds of air-powder polishing, results showed a significant decrease (p d".05) in the mean bond strength of the two paste adhesive resin when compared to baseline, 15, and 30 second treatments. No significant time effect of air-powder polishing was found for the no-mix adhesive system. SEM analysis of the bond failure sites showed tooth-adhesive, within adhesive and bracket-adhesive fracture patterns for the viewed samples of each adhesive type and air-powder polishing treatment time. Fractures within tooth structure were also noted for the two paste system, indicating strong enamel-adhesive-bracket bonds. Differences in the fracture pattern of the two paste 60 second air-powder polishing group may account for the differential effect of treatment. Although in vitro results showed decreased bond strength for the two paste system, use of air-powder polishing for the routine maintenance of the orthodontic patient should not affect clinical performance of this adhesive.
Author: Samer Sami Sunnan
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Dr. Chandresh Shukla
Publisher: Book Rivers
ISBN: 9355151225
Category : Medical
Languages : en
Pages : 64
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Book Description
Author: Robert Darrow Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
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Author: M. P. S. Sethusa
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Author: DR. DAMINI PATIL
Publisher: Blue Rose Publishers
ISBN:
Category : Education
Languages : en
Pages : 207
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Book Description
During the last two decades, adhesive restorative dentistry has increasingly proven its tremendous clinical potential, first in the anterior and more recently in the posterior segments of the mouth. Adhesive techniques have greatly expanded the horizon of aesthetic dentistry. Correction of shapes, positions, dimensions and shades of teeth are now possible with the restorative materials. Repair of fractured teeth can be carried out using the fractured tooth fragments there by maintaining original aesthetics.The continued developments of adhesive materials are now focused on gaining a better understanding of factors affecting adhesion in the oral environment to improve the clinical longevity of restorative materials.
Author: Brian Bourke
Publisher:
ISBN:
Category :
Languages : en
Pages :
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