Download or read book The Effect of Bracket Base Design on Shear Bond Strength written by Mark A. Naisbitt and published by . This book was released on 2010 with total page 34 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 Influence of Bracket Base Design on Shear Bond Strength of Brackets Bonded to Bovine Enamel written by Seema K. Sharma-Sayal and published by . This book was released on 1999 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shear Bond Strength of Bracket Bases to Adhesives Based on Bracket Base Design written by Patrick B. Rickheim and published by . This book was released on 2013 with total page 43 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:

Download or read book The Effect of Bracket Base Pylon Orientation on the Shear Bond Strength of the ODP ANCHOR LOCKTM Bracket Pad written by Adam John Veit and published by . This book was released on 2012 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Pre cure Bracket Movement on the Shear Bond Strength of Metal Brackets written by T. Luke Roberts and published by . This book was released on 2007 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Surface Preparation on the Shear Bond Strength of Orthodontic Brackets Bonded to Zirconia written by and published by . This book was released on 2015 with total page 70 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 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 Effect of Air abrasion Preparation on Shear Bond Strength of Orthodontic Brackets to Enamel Surface written by Elliott N. Katz and published by . This book was released on 2018 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Orthodontic Applications of Biomaterials written by Theodore Eliades and published by Woodhead Publishing. This book was released on 2016-11-22 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontic Applications of Biomaterials: A Clinical Guide reviews the applications of biomaterials and their effects on enamel preparation, bonding, bracket and archwire ligation, mechanotherapy, debonding, and long-term enamel structural, color, and surface effects. The book provides a step-by-step analysis of the phenomena occurring, their clinical importance, and their underlying cause without the use of complex mathematical or physical-chemical analyses, with the goal of providing 'digestible' evidence for the clinician. - Serves as a reference source of the spectrum of biomaterials used in orthodontics - Presents the most current evidence of state-of-the-art methods of materials research - Provides substantiation for the effects occurring during the materials' uses

Download or read book In Vitro Bond Strength of Orthodontic Brackets and Resin Composite Cement Degree of Conversion as a Function of Pre cure Temperature written by David Richard Ries and published by . This book was released on 2010 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this study was to evaluate the shear bond strength of orthodontic brackets and corresponding resin composite cement degree of conversion as function of pre-cure temperature. Orthodontic brackets were bonded to paired maxillary premolars or mandibular third molars in an environmental chamber with either room temperature (control) or warmed (68°C) resin cement. Bonding was followed immediately by shear testing of the bracket/cement/tooth interface. Residual resin cement on the bracket base was evaluated using micro-Raman spectroscopy to measure the degree of conversion of the cement from ratios of spectral peak heights at 1610cm−1 and 1640cm−1. Results showed no difference in shear bond strength or degree of conversion between room temperature and pre-warmed groups. Also, there was no difference in bond strength between premolar and third molar groups. The evidence suggests that pre-warming resin composite cement is not beneficial for increasing shear bond strength.

Download or read book The Effect on Shear Bond Strength of Ceramic Brackets at Different Water Temperatures written by Thomas P. Kadar and published by . This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of High Speed Curing Devices on Shear Bond Strength and Microleakage of Orthodontic Brackets written by Jeffrey W. James and published by . This book was released on 2001 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Microabrasion on Shear Bond Strength of New and Debonded Stainless Steel Brackets an in Vitro Study written by James Kevin Grabouski and published by . This book was released on 1995 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Clinical Acceptability of Orthodontic Bracket Base cement Combinations written by Zahra Hassanloo and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim was to identify bracket base-cement combinations that are clinically practical, provide adequate shear bond strengths (SBS), and result in the least damage to enamel. The SBS and the nature of bond failure using the Adhesive Remnant Index (ARI) were examined after 1 and 180-days for 28 combinations. SBS in 8 ± 3 MPa range and ARI scores >=2 were deemed clinically acceptable. Transbond and Fuji Ortho LC (FOL) (conditioned) were compatible with the four brackets (2 metal: Time, Speed; and 2 ceramic: Clarity, Transcend). Panavia21 was compatible with ceramic brackets. FOL (not-conditioned) yielded poor SBS and ARI scores with all of the bracket bases. Time had no significant effect on clinical acceptability. Enamel conditioning had a significant effect on the ARI scores (p