Er:YAG Laser for Brackets Bonding: A SEM Study after Debonding

Ierardo, Gaetano; Carlo, Gabriele Di; Petrillo, Francesca De; Luzzi, Valeria; Vozza, Iole; Migliau, G; Kornblit, R.; Rocca, Jean‐Paul; Polimeni, Antonella

doi:10.1155/2014/935946

Cited by 8 publications

(8 citation statements)

References 26 publications

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“…Studies have reported that 37% phosphoric acid resulted in a greater depth of resin penetration than other etching methods [1]. 37% phosphoric acid concentration with a 30-second application time is the gold standard for enamel etching [19]. Similar findings were reported by Gardner et al in their study, which indicated the use of 37% phosphoric acid with an optimum application time of 30 seconds [4].…”

Section: Discussionsupporting

confidence: 72%

Assessment of Wettability and Contact Angle of Bonding Agent with Enamel Surface Etched by Five Commercially Available Etchants: An In Vitro Study

Katyal

Subramanian

Venugopal

et al. 2021

International Journal of Dentistry

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Background. The quantity and quality of the etching pattern produced by acids play a significant role in the wettability and contact angle of the adhesive with the enamel surface in orthodontics. The better the etch pattern, the more the surface energy of the enamel, better the penetration of the adhesive, which ultimately results in better bond strength. The present study aimed to evaluate the contact angle of the bonding agent with the enamel surface etched by five commercially available etchants and check if any difference existed between the five. Materials and Methods. Twenty-five human maxillary and mandibular central incisors and premolars extracted for orthodontic or dental purposes were used in this study as samples. The teeth were allocated into five groups based upon the etchant used to etch the enamel surface. After the samples were etched, a hard tissue microtome was used to create thin slices of the enamel surface. The samples were then exposed to bonding agent Ormco Enlight. The bonding agent was released in the form of droplets onto the enamel slices mounted on a contact angle goniometer. The contact angle values were tabulated, and statistical analysis using the one-way ANOVA test was carried out. Results. The contact angle measurements of the etchant group, DPI, were the lowest, while D-tech has the highest contact angle values. However, statistical analysis revealed no statistically significant difference between the contact angle measurements of the five groups included in the study. Conclusion. No statistically significant difference existed between the five etchant groups included in the study. However, commercially available etchant DPI showed lesser contact angle and thus better wettability in comparison to other groups. Further elemental analysis and surface analysis are required to validate these results.

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Section: Discussionsupporting

confidence: 72%

Assessment of Wettability and Contact Angle of Bonding Agent with Enamel Surface Etched by Five Commercially Available Etchants: An In Vitro Study

Katyal

Subramanian

Venugopal

et al. 2021

International Journal of Dentistry

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“…There are different methods for removing composite residuals, like tungsten-carbide burs, Sof-Lex discs, ultrasonic tools, hand instruments, Er:YAG or CO 2 lasers, rubber or composite burs [5][6][7][8] , and many authors have studied those methods to find the one which best combines capability of removing composite residuals, respect for the enamel surface, and operating time. Tungsten carbide burs are faster and more effective than other instruments, and are considered the gold standard 9) ; however, all of these methods cause a certain amount of enamel loss and do not allow restoration of the enamel surface to its original state 9,10) .…”

Section: Introductionmentioning

confidence: 99%

Enamel preservation during composite removal after orthodontic debonding comparing hydroabrasion with rotary instruments

et al. 2020

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The aim of the present study was to evaluate how hydroabrasion performs during composite removal. A standardized amount of composite was bonded to 40 enamel surfaces of extracted third molars, then removed with either a tungsten carbide bur mounted on a micro-motor handpiece without irrigation, a tungsten carbide bur mounted on a micro-motor handpiece with irrigation, a tungsten carbide bur mounted on an air-rotor handpiece, or hydroabrasion. The four treatment methods were compared using the enamelsurface-index and the adhesive-remnant-index and performing a Kruskal-Wallis statistical test to detect differences between each method' scores. Hydroabrasion produced significantly less damage to the enamel surface compared to the other three methods. Hydroabrasion was the cleaning method that produced less damages to the enamel surface, at a cost of a less efficient composite removal than tungsten carbide burs on micro-motor handpiece.

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“…This finding was in agreement with several previous studies. 20 , 21 The laser-etched group exhibited clinically acceptable SBSs of 13.59 MPa.…”

Section: Discussionmentioning

confidence: 93%

“…Erbium lasers emit a wavelength of 2.94µm which matches –OH groups in hydroxyapatite 2.8 µm and the main absorption band of water (3 mm). 21 Thus, the irradiation is absorbed strongly by water and increases its affinity for hydroxyl apatite with minimal thermal effect on the pulp. 1 , 3 , 16 In this study, Erbium laser etching was compared to acid etching using 37% phosphoric acid as a control group, since it is the standard and most common etching method.…”

Section: Discussionmentioning

confidence: 99%

Effect of Er: YAG laser etching on shear bond strength of orthodontic bracket

Sallam

Arnout

2018

SMJ

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Objectives:To evaluate and compare the shear bond strength (SBS) of Erbium laser etched enamel to acid etched and to detect morphological changes on laser etched enamel surface using scanning electron microscope (SEM). Moreover, Laser induced caries resistance is advantageous in Orthodontics.Methods:This is an Ex vivo study between January 2016 and December 2017, which comprises a total of 50 human premolars, extracted for orthodontic purpose, were used in this study. The samples were randomly divided into 2 groups of 25 each. The first group was etched using 37% phosphoric for 30 seconds. As for the second group, enamel was treated by Er: YAG laser operating at wavelength 2.94µm, power 1.5W and repetition rate 15Hz. Five teeth from each group were selected for SEM evaluation and the study were continued on 20 teeth from each group. Teeth were subjected to shear bond strength test.Results:It showed, no-significant difference between the mean of shear bond strength and of the etched groups (p=0.016).Conclusion:It was concluded that, laser etched group (1.5W/15Hz) resulted in clinically accepted bond strength and could be an alternative to conventional acid etching.

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Er:YAG Laser for Brackets Bonding: A SEM Study after Debonding

Cited by 8 publications

References 26 publications

Assessment of Wettability and Contact Angle of Bonding Agent with Enamel Surface Etched by Five Commercially Available Etchants: An In Vitro Study

Assessment of Wettability and Contact Angle of Bonding Agent with Enamel Surface Etched by Five Commercially Available Etchants: An In Vitro Study

Enamel preservation during composite removal after orthodontic debonding comparing hydroabrasion with rotary instruments

Effect of Er: YAG laser etching on shear bond strength of orthodontic bracket

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