Download or read book The Effects on Bond strength of Variations in Size and Shape of Orthodontic Bracket Bases written by John N. Fox and published by . This book was released on 1983 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Shear Bond Strength of Orthodontic Bracket Base Shapes to Human Enamel an in Vitro Study written by Ziana Esmail and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: There is a growing demand for esthetic appliances during orthodontic treatment, with a specific interest in WildSmiles shaped brackets amongst children and adolescents. Bond failure of brackets over the course of orthodontic treatment can result in increased treatment time, increased overhead costs, and feelings of frustration for the patient and practitioner. Objective: The purpose of this study was to the evaluate the effect of orthodontic bracket base shape on shear bond strength (SBS) to human enamel, in vitro, at two time points, as well as the nature of debonding fractures using the Adhesive Remnant Index (ARI). Methods: Orthodontic brackets with different shaped bases (flower, heart, rectangular) were bonded to 120 extracted human third molars. SBS was measured using a Servohydraulic Test System at 24 hours and 2 months after initial bonding. ARI scores were evaluated under 10x magnification to assess the amount of resin left on the tooth. Results: The control bracket with a rectangular base shape had the highest mean SBS (26.78 ± 8.19 MPa), and significantly differed from flower (17.19 ± 4.45 MPa) and heart (18.86 ± 3.50 MPa) base shapes (p 0.001). The mean SBS of flower and heart shaped brackets did not differ considerably from each other (p 0.05). The mean SBS between debond times at 24 hours (21.50 ± 7.46 MPa) and 2 months (20.38 ± 6.69 MPa) were not statistically significant (p > 0.05). Analysis of ARI scores showed a significant difference between Flower-24 hours vs Heart- 2 months (p=0.039), Flower-24 hours vs Heart- 24 hours (p=0.004), and Control-2 months vs Heart-24 hours (p=0.015). The heart shaped bracket had a greater proportion of adhesive bond failures at the enamel-resin interface. Conclusion: Bracket base shape has an effect on SBS, with the rectangular base shape having a higher mean SBS compared to flower and heart base shapes. All bracket shapes had bond strengths above the clinically acceptable range of 6-8 MPa, and thus may provide adequate SBS in a clinical situation. Variations in ARI scores occurred based on bracket shape and were of a mixed adhesive-cohesive nature.

Download or read book The Effect of Variation in Orthodontic Bracket Pad Design on Shear Bond Strength Adhesive Thickness Tooth Adaptation and Curing Light Penetration written by Jennifer M. Messenger and published by . This book was released on 2013 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Orthodontic Bracket Base Diameter and Mesh Size on Bond Strength written by Marcel Cucu and published by . This book was released on 1999 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bond Strength of Treated Metal Brackets written by Leon V. Siomka and published by . This book was released on 1984 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Fourteen Direct Bonding Orthodontic Bases written by Philip T. Dickinson and published by . This book was released on 1980 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In Vitro Bond Strength of Orthodontic Direct Bonding Bracket cement Systems written by V. A. James Buzzitta and published by . This book was released on 1981 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Feasibility of Bonding Orthodontic Brackets to Laser Treated Enamel Surfaces written by Zvi Kantorowitz and published by . This book was released on 1998 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determining the Effect of Primekote Bracket Conditioner on Orthodontic Bond Strength written by Gary L. Jennings and published by . This book was released on 1999 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In Vitro Bond Strength of Plastic Bracket cement Systems written by Lucila Guerrero de Pulido and published by . This book was released on 1982 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of the Tensile Bond Strength of Orthodontic Bracket Bases Using Glass Ionomer Cement as an Adhesive written by Richard Don Burns and published by . This book was released on 1992 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Surface Preparations and Treatments for Stainless Steel Orthodontic Bracket Bases on Tensile Bond Strength to Zinc Polycarboxylate and Glass Ionomer Cements written by Chin-Fwu Chen and published by . This book was released on 1981 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimizing the Shear Bond Strength of Orthodontic Brackets Using Hybrid Glass Ionomer Materials written by Yung-Jeng Song and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1996 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Standardized Approach to Determine the Effect of Thermocycling and Long Term Storage on the Shear Bond Strength of Orthodontic Brackets Cemented to Bovine Enamel written by Raj-Deep Singh Mahal and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 1980's, direct bonding became a routine clinical procedure. Current literature on the effects of thermocycling on bond strength is equivocal. This is largely due to a lack of a universally accepted standardized technique to examine the effects of thermocycling on orthodontic bond strength. As a result, differences in testing methodology between laboratories and investigators within the same laboratory make it difficult to directly compare data from thermocycling studies. The aims of this study were (1) to show that the testing method developed at the University of Toronto is independent of the investigator; (2) to determine the effect of thermocycling on the shear bond strength of orthodontic brackets bonded to bovine enamel; (3) to determine the effect of long term storage on the mean shear bond strength of orthodontic brackets bonded to bovine enamel; (4) to examine the bond failure interface in order to determine if a relationship exists between thermocycling and the location of the cement after debonding; (5) to examine the bond failure interface in order to determine if a relationship exists between long term storage and the location of the cement after debonding. (Abstract shortened by UMI.).

Download or read book Factors Affecting Bond Strength of No mix Orthodontic Adhesive Systems written by Lawrence B. Evans and published by . This book was released on 1984 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Relationship of Bonding Base Size of Directly Bonded Orthodontic Brackets to Bond Strength and to Bending Properties of Orthodontic Wires written by Thomas Patrick Rose and published by . This book was released on 1985 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Various Retentive Ceramic Bracket Bases on Shear Bond Strength written by Gregory E. Dykes and published by . This book was released on 1990 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: