Download or read book Shear Bond Strength of a Self etching Primer in the Bonding of Orthodontic Brackets written by Tanya N. Paskowsky and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Self Etching Primers and Shear Bond Strength of Orthodontic Brackets written by Amit Goyal and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-etching primers are the latest addition to the armamentarium of an orthodontist. Their main advantage is that they reduce the number of steps required in the bonding of orthodontic brackets. However, their low ph was a cause of concern. This book describes a study undertaken to see the effects of ph of self-etchant on shear bond strength of orthodontic brackets. These shear bond strengths were also compared to those obtained with a conventional 3-step bonding system. It was found that self-etching primers not only reduce the chair time in an orthodontist's clinic but also reduce the amount of enamel lost during etching. The bond strength achieved was less than that of the conventional bonding system but was acceptable for orthodontic purposes. Thus self-etching primers are an important and useful invention for simplifying the most critical step in orthodontic clinic- bonding.

Download or read book Orthodontic Bracket Bond Strength Using Self etching Primer with Or Without Pumice Or Acid Etch Pretreatment written by Ana Paula DeCastro and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to compare the shear bond strength of orthodontic brackets to enamel in four bonding protocols: SEP without prior pumicing (None), Pre-etch and SEP without prior pumicing (Pre-etch), control: SEP with prior pumicing (Pumice), and Pre-etch and SEP with prior pumicing (Both). 80 extracted bovine incisors were randomly divided into 4 groups of 20, and brackets were bonded under the different experimental conditions. Debonding force was measured with an Instron universal testing machine. A two-way ANOVA comparing the four groups indicated that there was a significant difference in debonding force (P = 0.001). The SEP without prior pumicing group (17.69 " 7.18 MPa) was statistically different from the SEP group with prior pumicing (25.82 " 6.84 MPa). There was no statistical difference found among the other groups. Differences in the Adhesive Remnant Index (ARI) were analyzed by chi-square. ARI scores differed significantly (P =0.0048).

Download or read book A Comparison of Shear Bond Strengths of Orthodontic Brackets Bonded Using Self etching Primer with Varying Time Intervals Between Activation and Application written by Katherine D. Plunkett and published by . This book was released on 2016 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Shear Bond Strength of 3 Different Self Etching Primers written by Murali Radhakrishnan Venu and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective: To evaluate bond strength achieved by 3 commercially available self etching primers & to determine whether Xeno V & Clearfil Protect Bond self etching primers are suitable for orthodontic use.Method: The products tested were 1.Transbond Plus Self Etching Primer,3M 2.Xeno V, Dentsply,3.Clearfil Protect Bond, Japan.60 freshly extracted human maxillary 1st premolars were randomly divided into 3 groups of 20 teeth each.Group 1 (Transbond Plus Self Etching Primer & Transbond XT) group 2 (Xeno V and Transbond XT) group 3 (Clearfil Protect Bond & Transbond XT).Self etching primers were applied according to manufacturer's recommendations & metal brackets in all groups were bonded with Transbond XT adhesive.Brackets were cured for 20 sec with halogen curing lamp & stored for 24 hrs in distilled water.Brackets were debonded in shear on a universal testing machine. Results: One-way ANOVA showed a statistically significant difference.Group 3 had the highest shear bond strength.Conclusions: Acceptable bond strength was achieved by all the 3 groups tested. .Xeno V & Clearfil Protect Bond self-etching primers had sufficient shear bond strength to withstand normal orthodontic fo

Download or read book Evaluation of the Shear Bond Strength of Orthodontic Brackets Using a Self etching Primer System Under Dry and Wet Conditions written by Brian John DeVoe and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bond Strengths of Orthodontic Brackets Using 3 Etching Techniques written by Shilpa Jamenis and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was carried out to evaluate and compare the shear bond strengths between the orthodontic bracket and acid etched enamel, enamel treated with self-etch primer and laser irradiated enamel and to analyze the interface of the enamel bracket bond.It will help students, teachers and othodontia practitioners as it deals with the most contemporarily used bonding techniques. The results indicate that the shear bond strength of all the three groups was clinically acceptable with no significant difference between them but more adhesive was left on enamel treated with acid and laser as compared to self-etch primer treated enamel.

Download or read book DIFFERENT ORTHODONTIC BONDING AGENTS THEIR MYTHS AND TRUTHS written by Dr. Chandresh Shukla and published by Book Rivers. This book was released on 2022-05-24 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Prophylactic Debridement on Shear Bond Strength of Orthodontic Brackets when Using a Self etching Primer written by Mark A. Bieszki and published by . This book was released on 2005 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BONDING IN ORTHODONTICS written by DR.ARCHANA KUMARI and published by Book Rivers. This book was released on 2022-03-14 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of orthodontic materials in the past 5 decades has been a unique progress curve characterized by periods of intense activity with many developments followed by long quiescent intervals. An example of the delay in adopting the advances in dentistry might well be illustrated by the acid-etching technique, which was introduced in the mid 1950s1 and became universally accepted in the 1960s. It took more than a decade for this practice to become standard procedure in orthodontics on a large scale. Infact, orthodontic bonding has advanced more in last 10 years than previous 25. In the past decade, we have witnessed unprecedented progress in bonding to enamel with various materials techniques and auxiliaries involving glass ionomer bonding, self-etching primers, and new, powerful light-curing sources, along with self-ligating brackets and a different treatment concept, the Invisalign technique.

Download or read book Comparison of Two Self Etch Primers and a Fluoride Sealant on Shear Bond Strength of Precoated Brackets written by Debby Wong and published by . This book was released on 2009 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: In an attempt to save chair time during bonding, self-etching primers are used along with metal brackets that are precoated with adhesive material. Fluoride releasing sealants has also been used commonly to prevent decalcification during orthodontic treatment. The purpose of this study was to compare the shear bond strength (SBS) of APC precoated brackets bonded with two different self-etching primers: Transbond Plus self-etch primer (TPSEP) and Reliance self-etch primer. This study also evaluated the effect of combining TPSEP or the Reliance SEP with LED Pro Seal, a fluoride releasing sealant for the enamel surface. Each of the self-etching primers (SEPs) and the combination of SEP combined LED Pro Seal were evaluated for shear bond strength after 24 hours of storage and thermocycling with 1 week of storage, in order to simulate some of the temperature changes in the oral cavity.^Materials and Methods: One hundred and twelve teeth were randomly divided into eight groups as follows: Group 1: Transbond Plus self-etch primer (TPSEP), Group 2: Reliance self-etch primer (Reliance), Group 3: TPSEP and LED Pro Seal, Group 4: Reliance and LED Pro Seal, Group 5: TPSEP with thermocycling, Group 6: Reliance with thermocycling, Group 7: TPSEP and LED Pro Seal with thermocycling, Group 8: Reliance and LED Pro Seal with thermocycling. An occlusogingival load was applied to the brackets producing a shear force at the bracket-tooth interface utilizing a Universal Testing Machine. Results: Significant differences in shear bond strengths among the groups containing the TPSEP or Reliance SEP, were detected by two-way ANOVA (p = 0.018). The results of the Newman-Keul's test that compared the test groups at 24 hours show that the shear bond strength of Reliance SEP (3.98 MPa " 1.30) was not statistically different from TPSEP (4.25 MPa " 1.16).^When each of the SEP is combined with the Pro Seal, a statistical difference in shear bond strength is detected between TPSEP (6.01 MPa " 3.05) and Reliance SEP (3.76 MPa " 1.52). Reliance SEP used alone vs. Reliance SEP combined with Pro Seal did not show any statistical difference in shear bond strength. However, when TPSEP was compared to TPSEP combined with Pro Seal, it showed a statistical difference in shear bond strength. Nonetheless, a two-way ANOVA did not detect any statistically significant interaction between the SEPs and the Pro Seal (p = 0.058). None of the groups showed statistically significant differences in shear bond strength when compared at the one week group. Conclusion: The newly introduced Reliance SEP provides similar shear bond strengths to Transbond Plus SEP. Reliance SEP with LED Pro Seal and Transbond Plus SEP with LED Pro Seal both provide adequate shear bond strengths.^Both SEPs used alone or with LED Pro Seal maintained its bond strength after thermocycling. LED Pro Seal is demonstrated to have good bond strength to enamel and can withstand the oral environment.

Download or read book Alternative Orthodontic Bonding Protocol Using Self Etching Primer written by Rush-Baker G. Caldwell and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the current study was to develop a bonding method that can achieve clinically acceptable bond strength values while leaving a minimum amount of adhesive on the tooth surface during the debonding process. One hundred teeth were randomly assigned into groups. Five different enamel surface preparation protocols were tested (N = 20, each): Conventional acid etch, standard SEP, SEP applied with a light brush stroke (altered SEP 1), SEP applied directly to the composite of pre-coated bracket (altered SEP 2), and Primer Only groups. Brackets were debonded using an Instron universal testing machine (Instron, Canton, MA) in shear mode and the mean shear bond strength values were calculated. In addition, enamel surfaces were examined under light microscope to determine the location of failure using ARI. The Primer Only group had significantly lower mean shear strength (0.14 MPa, P0.05) than the conventional acid etch (13.81 MPa), standard SEP (12.10 MPa), altered SEP 1 (10.80 MPa), and altered SEP 2 (11.48 MPa) groups. The conventional acid etch, standard SEP, altered SEP 1 and altered SEP 2 groups were not significantly different from each other (p0.05). With respect to ARI values, there was a significant difference among these four groups. 85% of samples in the altered SEP 2 group had 10% or less composite resin left on their surfaces. This group had also a mean shear bond strength value of 11.43 MPa, significantly above the minimal strength needed for orthodontic attachment bonding, and the lowest ARI values overall. Therefore, application of SEP directly to the composite resin of the pre-coated brackets may be an ideal bonding method by providing adequate bond strength and leaving a minimum amount of composite resin on the tooth surface during debonding. It should be kept in mind that future in-vivo studies would be needed to confirm the findings obtained from the current in-vitro study.

Download or read book Shear Bond Strengths of Two New Self etching Primers written by Andy CS. Ho and published by . This book was released on 2010 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Purpose: To evaluate the in vitro shear bond strength (SBS) of orthodontic attachments using 2 self-etching primers (SEP): iBOND and G-Bond. Methods: 180 molars were randomly divided into 12 groups. Teeth were bonded with a stainless steel button using Transbond XT composite. The bonding agents were iBOND, G-Bond, Transbond Plus SEP and Transbond XT primer (control). SBS's immediately, 24hours and 3months were measured with their Adhesive Remnant Index (ARI). Results: Transbond XT primer (11.22MPa) had a significantly higher immediate SBS than Transbond Plus SEP (5.32MPa), iBOND (6.69MPa) and G-Bond (8.30MPa). 24 hours, Transbond XT primer (16.65MPa) and Transbond Plus SEP (13.20MPa) had a significant increase in their SBS. No difference was observed at 3 months. ARI were significantly different between the groups at all time points. Conclusions: iBOND and G-Bond yielded sufficient SBS's over the three time points that may be sufficient to withstand occlusal and light archwire forces.

Download or read book A Comparison of the Effect of a Restorative Versus an Orthodontic Self etching Primer on Orthodontic Shear Bond Strength written by Cranford Shane Langley and published by . This book was released on 2009 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Phosphoric Acid Etching Prior to Application of Self etching Primer SEP on Shear Bond Strenght written by Grace Shao-Chiu Chen and published by . This book was released on 2010 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION: The objective of this study was to determine the effect of phosphoric acid etching prior to application of self-etching primer on orthodontic bonding in terms of shear bond strength and the adhesive remnant on the enamel surface at debonding. METHODS: Fifty-one extracted human premolars were pumiced, rinsed, dried, and then subjected to three different treatments: Group 1: no phosphoric acid etching + Transbond Plus SEP; Group 2: 15-second etching with 37% phosphoric acid + rinsed + dried + Transbond Plus SEP; Group 3: 30-second etching with 37% phosphoric acid + rinsed + dried + Transbond Plus SEP. Precoated metal brackets (3M Unitek, APC Plus, Victory brackets) were then bonded following the manufacturer's recommendation. An Instron Universal Testing Machine was used to test shear bond strength (SBS) at a crosshead speed of 0.5 mm/min. Adhesive remnant index (ARI) was assigned to all specimens under a 16 times magnification using a light microscope. RESULTS: One-way repeated measured analysis of variance test (ANOVA) revealed no significant differences in shear bond strength among all three groups. Kruskal Wallis test revealed that there was a significant difference in ARI score between Group 1 when compared to Groups 2 and 3. Two-way analysis of variance was used to examine any statistical difference in frequency of enamel fracture craters among the three groups. CONCLUSION: There was no statistical difference in shear bond strength between the three groups. Most specimens demonstrated adequate shear bond strength (>/= 6 MPa) for routine clinical application. Etching enamel with phosphoric acid prior to the use of Transbond Plus SEP resulted in more adhesive remaining on the enamel surface. The removal of this excess surface cement may lead to increased enamel loss during post debonding clean up.

Download or read book A Self etching Primer Saliva Contamination and Bond Strength of Orthodontic Brackets written by Robert Ross Russell and published by . This book was released on 2003 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book In Vitro Investigation Into Bond Strength of Metal and Ceramic Orthodontic Brackets written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: AIM: 1. To determine in vitro bond strength of metal and ceramic orthodontic brackets when using etch and separate primer, or self-etching primer (SEP) 2. To assess remaining adhesive following removal of orthodontic bracket METHOD: 180 previously extracted teeth were randomly allocated to one of six test groups. Each was subjected to either separate etch and primer or SEP and then bonded with an orthodontic bracket. These were metal (3M Unitek Victory), metal reinforced ceramic (3M Unitek Clarity) and poly-crystalline ceramic (3M Unitek Transcend). Samples were stored at 37 degrees C for 24 hours. Each bracket was debonded using shear force applied by the Instron Universal testing machine. Samples were examined under x10 light microscopy and allocated an Adhesive Remnant Index (ARI) score. RESULTS: Variation in shear bond strength (SBS) was seen across all groups. Lowest SBS was recorded with Victory series brackets bonded with SEP (7.08 MPa) and the highest was with Clarity series brackets bonded with separate etch and primer (15.96 MPa). Pooled data showed significantly higher SBS with separate etch and primer than SEP (T=2.83, p