2012
DOI: 10.1111/j.1834-7819.2012.01679.x
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Enamel demineralization and bracket bond strength when etching with acid and /or Er:YAG laser

Abstract: Background: Enamel etching for brackets is usually done with phosphoric acid. Er:YAG lasers have been recently used for this purpose with conflicting results. The effects of lasers on tooth demineralization and the effects of different combinations of laser treatments and bonding agents were evaluated in this study. Methods: The enamel contents of fluorine, calcium oxide and phosphorus pentoxide (P 2 O 5 ) were analysed using acid etching, laser treatment or both. The tensile bond strength of metallic and cera… Show more

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Cited by 25 publications
(24 citation statements)
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“…However, laser ablation takes more time and requires expensive equipment, and safety considerations during laser use need to be taken into account 11,12. Pretreatment with Er:YAG laser alone prior to sealant application led to increased resin microleakage and less tensile bond strength of the sealant-to-enamel bond than acid etching 13,14,15,16,17,18. However, other studies found that the use of erbium laser associated with etching yielded similar microleakage and retention,18,19,20 or less microleakage, than conventional acid etching 21…”
Section: Introductionmentioning
confidence: 97%
“…However, laser ablation takes more time and requires expensive equipment, and safety considerations during laser use need to be taken into account 11,12. Pretreatment with Er:YAG laser alone prior to sealant application led to increased resin microleakage and less tensile bond strength of the sealant-to-enamel bond than acid etching 13,14,15,16,17,18. However, other studies found that the use of erbium laser associated with etching yielded similar microleakage and retention,18,19,20 or less microleakage, than conventional acid etching 21…”
Section: Introductionmentioning
confidence: 97%
“…23 Lasmar et al suggested that the use of an Er:YAG laser (Kavo Key Laser) at 80 mJ and 4 Hz caused less demineralization than acid etching when an etch&rinse adhesive system (Transbond XT Primer) was used; however, these parameters produced lower tensile stress strength than acid etching and demonstrated that the best results were obtained with a combination of laser and acid etching. 13 Because no prior studies had been published regarding lesion depth measurements around orthodontic brackets bonded to laser-etched enamel surfaces with one/two-step SEPs, our lesion depth results could not be compared precisely with other studies.…”
Section: Discussionmentioning
confidence: 98%
“…At this point, to determine which laser parameters and adhesive systems provide both adequate bond strength and demineralization prevention is challenging, considering the conflicting results obtained in most studies evaluating the bond strength of brackets after etching with an erbium laser. 8,9,13,[16][17][18] In our study, laser energy settings were chosen based on a previous study reporting Er:YAG that laser irradiation at 100-200 mJ and 10 Hz is suitable for enamel etching, providing significant protection against enamel demineralization.…”
Section: Discussionmentioning
confidence: 99%
“…[49][50][51] The parameters of 200 52 -300 mJ 51 and 2 Hz showed the best results in demineralization. However, 300 mJ and 10Hz failed to stimulate LIPD.…”
Section: Discussionmentioning
confidence: 99%