Intrapulpal Temperature Increase During Er:YAG Laser-Aided Debonding of Ceramic Brackets

Yilanci, Hilal; Yildirim, Zeynep Beyza; Ramoğlu, Sabri İlhan

doi:10.1089/pho.2016.4198

Cited by 13 publications

(9 citation statements)

References 39 publications

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“…The intrapulpal temperature increase in central incisors was significantly higher than that of the premolar teeth when removing brackets with Er:YAG laser at 1.2 W, 600 mJ, 2 Hz. 36 A similar trend was observed when debonding prefabricated zirconia crowns from primary teeth with larger pulps and thinner layer of dentin and thus closer proximity to the irritated surface. 49 Increasing thickness of veneer restoration does not necessarily result in an increase in pulpal temperature despite requiring longer time of irradiation for debonding.…”

Section: Pulpal Temperature Changessupporting

confidence: 54%

Erbium laser‐assisted ceramic debonding: a scoping review

Deeb

Grzech‐Leśniak

Brody

et al. 2022

Journal of Prosthodontics

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Purpose Removal of ceramic restorations and appliances can be time consuming, invasive, and inconvenient. Erbium lasers offer an alternative noninvasive method for debonding of ceramic appliances. This paper aims to provide a comprehensive review of current literature on the effectiveness of erbium lasers for removal of ceramic restorations and appliances from natural teeth and dental implants. Methods A comprehensive search of 7 databases, including Medline (Ovid), Embase, Dentistry and Oral Sciences Source (DOSS), Web of Science, Cochrane Library, and ProQuest Dissertations and Theses was performed. The inclusion and exclusion criteria were agreed prior to the literature search. Two reviewers independently screened the title and abstract. A third reviewer then broke the tie, if any. The selected articles then underwent full text review and the data was extracted. Results The search identified 4117 unique articles published through June 10, 2021. Studies were assessed and categorized based on the type of restoration/appliance, type of abutment, type of laser, laser settings, efficacy of debonding, and pulpal temperature rise. Thirty‐eight full‐text articles were reviewed for inclusion. Time for ceramic debonding varies depending on the type of restorations and materials. Removal of zirconia crowns from teeth and implant abutments requires a longer period of time compared to lithium disilicate crowns. Temperature increases were reported as 5.5 degrees or less. Laser setting and laser type affect the debonding time and the increase in temperature. Examinations of debonded ceramics demonstrated no known structural damages resulting from laser applications. Conclusions Erbium lasers are effective noninvasive tools to remove all ceramic restorations/appliances from natural teeth and implant abutments without causing harm to abutments. Laser‐assisted debonding should be considered as a viable alternative to rotary instrumentation for ceramic crowns; however, clinical studies of erbium‐assisted ceramic retrieval are needed.

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Section: Pulpal Temperature Changessupporting

confidence: 54%

Erbium laser‐assisted ceramic debonding: a scoping review

Deeb

Grzech‐Leśniak

Brody

et al. 2022

Journal of Prosthodontics

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“…Another possible explanation for this difference is the lack of adjustment of the laser parameters that are effective in ceramic bracket debonding from the composite surface. In the present study, irradiation parameters were adjusted according to similar previous studies [15,16]. Irradiation parameters might be different for composite and enamel.…”

Section: Discussionmentioning

confidence: 99%

“…The Er:YAG and Er,Cr:YSGG laser parameters were adopted from similar previous studies in order to be able to compare their efficacy for debonding [15,16]. Figure 2 shows a sample ready for bracket debonding using the universal testing machine.…”

Section: Methodsmentioning

confidence: 99%

Effect of Er:YAG and Er,Cr:YSGG Lasers on Ceramic Bracket Debonding from Composite Blocks

Mirhashemi¹,

Hossaini²,

Etemadi³

et al. 2019

fid

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Objectives:This study aimed to assess the effect of erbium-doped yttrium aluminum garnet (Er:YAG) and erbium, chromium: yttrium, scandium, gallium, garnet (Er,Cr:YSGG) lasers on the shear bond strength (SBS) of ceramic brackets debonding from the surface of composite blocks.Materials and Methods:Thirty-six composite blocks were fabricated using Filtek Z250 light-cure composite. Block surfaces were etched with 37% phosphoric acid for 30 seconds and then rinsed with water for 20 seconds and dried. Maxillary right central incisor ceramic orthodontic brackets were bonded to the surfaces of composite blocks using Transbond XT adhesive and were cured for 40 seconds. Twelve samples were irradiated with Er:YAG laser, while 12 samples were irradiated with Er,Cr:YSGG laser, and the brackets were then debonded using a universal testing machine. Twelve samples served as controls (debonding using the universal testing machine without using a laser). The adhesive remnant index (ARI) score and bracket or composite cracks were evaluated under a stereomicroscope. One-way analysis of variance (ANOVA) was used for the comparison of the three groups. Kruskal-Wallis test was used to compare the ARI scores.Results:The mean SBS was 17.01±5.22 MPa with Er:YAG laser, 18.03±6.46 MPa with Er,Cr:YSGG laser, and 16.61±6.73 MPa in the control group; the difference of the three groups was not significant (P=0.835). The difference in the ARI scores and enamel and composite cracks was not significant either (P>0.05).Conclusion:This study did not show any reduction in the bond strength of ceramic bracket to composite blocks after Er:YAG and Er,Cr:YSGG laser irradiation.

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“…Possessing a wavelength of 2.94 μ m within the infrared range, Er:YAG laser has wide applications in dental practice [ 30 , 31 ]. One emerging clinical application comprises the removal of all-ceramic restorations.…”

Section: Discussionmentioning

confidence: 99%

Temperature Changes in Oral All-Ceramic Materials with Different Optical Properties under Er:YAG Laser Irradiation

et al. 2022

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Objectives. This in vitro study is aimed at assessing the oral all-ceramic materials energy transmission and temperature changes after Er:YAG laser irradiation of monolithic zirconia all-ceramic materials with varying optical properties. Materials and Methods. Two monolithic zirconia materials, Zenostar T and X-CERA TT (monolithic Zirconia), were studied. Specimens were divided into four groups, with a thickness of 1.0, 1.5, 2.0, and 2.5 mm, respectively. The chemical elemental composition of the two materials was determined using X-ray spectroscopy and Fourier transform infrared spectroscopy. The light transmittance of specimens with different thicknesses was measured using a spectrophotometer at three wavelength ranges: 200–380, 380–780, and 780–2500 nm. Irradiation with Er:YAG laser was performed, and the resultant temperature changes were measured using a thermocouple thermometer. Results. Compositional analysis indicated that Si content in X-CERA TT was higher than that in Zenostar T. The light transmittance of both materials decreased as specimen thickness increased. Er:YAG laser irradiation led to temperature increase at both Zenostar T (26.4°C–81.7°C) and X-CERA TT (23.9°C–53.5°C) specimens. Both optical transmittance and temperature changes after Er:YAG laser irradiation were consistent with exponential distribution against different thickness levels. Conclusion. Er:YAG laser penetration energy and resultant temperature changes were mainly determined by the thickness and composition of the examined monolithic zirconia materials.

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Intrapulpal Temperature Increase During Er:YAG Laser-Aided Debonding of Ceramic Brackets

Abstract: The use of Er:YAG laser is an effective method for debonding the monocrystalline ceramic brackets. This method can be used safely under the consideration of intrapulpal temperature changes.

Cited by 13 publications

References 39 publications

Erbium laser‐assisted ceramic debonding: a scoping review

Erbium laser‐assisted ceramic debonding: a scoping review

Effect of Er:YAG and Er,Cr:YSGG Lasers on Ceramic Bracket Debonding from Composite Blocks

Temperature Changes in Oral All-Ceramic Materials with Different Optical Properties under Er:YAG Laser Irradiation

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