Er,Cr:YSGG Laser as a Novel Method for Rebonding Failed Ceramic Brackets

Sohrabi, Aydin; Jafari, Sanaz; Kimyai, Soodabeh; Rikhtehgaran, Sahand

doi:10.1089/pho.2014.3868

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…The literature recommends different methods for removing composite cement. For example, the use of laser technology has been proposed (Er,Cr:YSGG; Er:YAG) for cleaning debonded orthodontic brackets, a technique that has been shown to be effective, and produces bond strength values that are similar to the original bond (15,16). Other methods include sandblasting or silanization followed by an application of silane that produces bond strengths similar to normally bonded brackets (5,17).…”

Section: Discussionmentioning

confidence: 99%

Shear bond strength of debonded ceramic restorations re-cemented by means of a cleaning and retreatment protocol

Pineda-Vásquez

Fons-Font²,

Bustos-Salvador³

et al. 2019

J Clin Exp Dent

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Background As there is no standard method for re-cementing debonded partial ceramic restorations, the aim of this study was to evaluate the use of a non-invasive thermal protocol for cleaning and retreatment, and to study its influence on shear bond strength. Material and Methods Twenty ceramic samples (IPS e.max CAD®) were bonded to composite cement cylinders and underwent a shear bond strength test (G1, n=20). A second group was created (G2, n=20), representing debonded restorations. To simulate debonding, the samples were artificially contaminated with composite cement. After debonding, these underwent a thermal protocol to remove remaining adhesive. After rebonding to the composite cement cylinders, samples underwent the shear bond strength test. Results Median bond strengths for G1 and G2 were 7.28±3.23; 7.06±3.41 MPa, respectively, without significant difference between the groups ( p =0.983). Conclusions Debonded lithium disilicate glass-ceramic restorations should undergo a laboratory cleaning and retreatment protocol before being returned to the clinic for rebonding. Key words: Ceramic, adhesive debonding, shear bond strength, porcelain laminated veneers.

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Section: Discussionmentioning

confidence: 99%

Shear bond strength of debonded ceramic restorations re-cemented by means of a cleaning and retreatment protocol

Pineda-Vásquez

Fons-Font²,

Bustos-Salvador³

et al. 2019

J Clin Exp Dent

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“…Abe et al observed that the bond strength measured initially was substantially higher than the mean bond strength post-rebonding in their investigation [ 16 ]. The Er,Cr:YSGG laser demonstrated its potential to rebond ceramic brackets by successfully removing the remaining bonding material from the base of the brackets without interfering with its base surface [ 17 ]. According to Srivastava, laser etching was found to be more successful than acid etching, and both methods can be used to alter the bonding strength [ 18 ].…”

Section: Discussionmentioning

confidence: 99%

An In-Vitro Analysis of the Surface Treatment of Orthodontic Bracket Bases With Er,Cr:YSGG Laser and Its Effect on Shear Bond Strength

Raju,

George,

T. R.

2023

Cureus

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Introduction Shear bond strength is indispensable to prevent the debonding of orthodontic brackets. Lasers have been proven to alter the bond strength of orthodontic brackets, but their efficiency has not been validated in many trials. The study aimed to evaluate the impact of the Er,Cr:YSGG laser on the bases of orthodontic brackets and determine their bond strength with the enamel surface. Materials and methods The Waterlase iPlus (made in the USA in 2012), comprising an Er,Cr:YSGG laser, was used. Based on the surface treatment of brackets, two groups were assigned (n=10), comprising laser-treated and untreated bracket bases. The brackets were treated with the minimum laser intensity (50 Hz, 4.5 W). Then, the brackets of both groups were attached to the labial surfaces of previously extracted premolars, respectively. The shear bond strength of brackets (SBS) was assessed using the universal testing device, and the Adhesive Remnant Index (ARI) was also measured. An independent sample t-test was used to compare the bond strength between the laser-treated and untreated brackets. Results The mean bond strength of laser-treated and control group brackets was 5 MPa and 8.63 MPa, respectively. The laser-treated brackets showed lower bond strength than the control brackets, but the results were statistically insignificant (p=0.23). The ARI analysis stated that bond failures occurred mostly in the region of the bracket and adhesive interface. Conclusion Laser-etched bracket bases showed lesser shear bond strength than the untreated ones, though the difference was statistically insignificant.

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“…Lasers such as erbium: yttrium aluminum- garnet (Er:YAG) and erbium, chromium: yttrium-scandium-gallium garnet (Er,Cr:YSGG), have been used to remove restorative materials, including laminate veneers and crowns [ 8 , 12 , 13 ]. The effect of laser debonding on bond strength of resin cement to ceramic was not tested in the literature but the re-bond strength was tested after using (Er,Cr:YSGG) laser to remove the remnants of bonding materials from base of failed ceramic orthodontic brackets, which was effective [ 14 ]. A strong and durable resin-ceramic bond improves marginal adaptation and provides high retention [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

The effect of Er, Cr:YSGG laser debonding on the bond strength of two ceramic materials to dentin

2023

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Objectives Evaluating the bond strength of two ceramic materials to dentin after Er,Cr:YSGG laser debonding. Would laser debonding affect the bond strength of ceramic to dentin? Materials and methods Recently extracted human molars were ground to expose dentin. Forty square shaped samples were prepared from CAD/CAM ceramic blocks. Samples were divided into two groups according to the type of ceramic material; group E: Lithium disilicate and group T: Ultra-translucent Zirconia (n = 20) Each group was divided into two subgroups (n = 10) according to the laser debonding effect (subgroup B: bonded samples, subgroup R: re-bonded samples after laser debonding). Ceramic samples were bonded to dentin using dual cure self-adhesive resin cement. Laser debonding of ceramic samples of subgroups R using Er, Cr:YSGG laser, were then re-bonded again to dentin surface with same resin cement. The Shear bond strength test using Universal testing machine was done. The failure mode was analyzed. Two-way analysis of variance was used to compare the mean bond strength and re-bond strength of two materials. The significance level was set at P ≤ 0.05. Results Two-Way ANOVA showed that ceramic type had a significant effect on the re-bond strength to dentin. The predominant failure mode was adhesive. Conclusions Laser debonding of Lithium disilicate and Ultra translucent Zirconia decreased the re-bond strength to dentin. Deterioration in re-bond strength for Lithium disilicate ceramics was more pronounced than for Ultra translucent Zirconia. Clinical Relevance Deterioration in the bond strength between ceramics & dentin after laser debonding still needs improvement to allow its clinical use.

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Er,Cr:YSGG Laser as a Novel Method for Rebonding Failed Ceramic Brackets

Cited by 6 publications

References 19 publications

Shear bond strength of debonded ceramic restorations re-cemented by means of a cleaning and retreatment protocol

Shear bond strength of debonded ceramic restorations re-cemented by means of a cleaning and retreatment protocol

An In-Vitro Analysis of the Surface Treatment of Orthodontic Bracket Bases With Er,Cr:YSGG Laser and Its Effect on Shear Bond Strength

The effect of Er, Cr:YSGG laser debonding on the bond strength of two ceramic materials to dentin

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