Comparison of different bonding materials for laser debonding

Mimura, Hiroshi; Deguchi, Toshio; Obata, Akihiko; Yamagishi, Toshio; Ito, Michio

doi:10.1016/s0889-5406(95)70020-x

Cited by 55 publications

(44 citation statements)

References 7 publications

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“…Laser-initiated debonding works by degrading or thermally softening the adhesive resin. 19 This finding is in agreement with other studies that concluded that the diode laser debonding protocol used did not produce any explosive "blow-offs," unlike the changes produced by Nd-YAG laser such as carbonization to the remnant resin or decomposition of the bracket base. 13 The results of this study agree with those of previous studies, substantiating the fact that lasers can be used effectively to thermally soften the adhesive resin for the removal of ceramic brackets.…”

Section: Discussionsupporting

confidence: 91%

“…Additionally, the ARI scores were almost within the secure range, similar to previous studies. 12,19 The SEM image revealed that the possibility for enamel cracks to occur was more with the control group (samples not lased) as compared with the other groups. This goes with the study carried out by Almohaimeed and El Halim, 15 in which enamel cracks were less for the samples that had been lased.…”

Section: Discussionmentioning

confidence: 98%

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Immediate and Delayed Effects of Diode Laser on Debonding of Ceramic Brackets: An in vitro Study

Anand

Prabhakar

et al. 2016

The Journal of Contemporary Dental Practice

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Aim:The aim of the study is to evaluate the immediate and delayed effects of diode laser on debonding of ceramic brackets. Materials and methods:A total of 60 human extracted premolar teeth were randomly assigned to three different treatment groups. All teeth were bonded with adhesive precoated (APC) ceramic brackets (3M Unitek). A total of 20 teeth were debonded without lasing (group 1), 20 immediately after lasing (group 2), and 20 1 hour after lasing (group 3). For the lasing groups (groups 2 and 3), access cavity was prepared on the occlusal surface to a 2 mm diameter. A transbond plus self-etching primer (3M Unitek, Monrovia, CA, USA) and APC PLUS clarity advanced brackets (3M, Unitek, Monrovia, CA, USA) were used. The shear bond strength (SBS) and adhesive remnant index (ARI) were measured. The internal pulpal wall temperature was noted for the laser groups. Results:The mean SBS was 15.4, 11.57, and 11.79 MPa for groups 1 to 3 respectively. Post hoc test showed significant difference (p < 0.001) between the control group and the lased groups. For groups 2 and 3, the rise in temperature was at an average of 1.4 and 1.3°C respectively. Conclusion:The SBS of APC brackets decreased by 33.3% on application of diode laser without increasing the internal pulp chamber wall temperature significantly. Shear bond strength remains more or less the same whether debonding is done immediately after lasing or 1 hour after lasing. Diode lasers increased the ARI scores and thus decreased the risk of enamel fracture.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 98%

Immediate and Delayed Effects of Diode Laser on Debonding of Ceramic Brackets: An in vitro Study

Anand

Prabhakar

et al. 2016

The Journal of Contemporary Dental Practice

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“…These methods include debonding brackets using ultrasonic instrumentation 9,10) , electrothermal heating [11][12][13] , or laser irradiation [14][15][16] . However, there are some problems with these methods.…”

Section: Introductionmentioning

confidence: 99%

Development of an Easy-debonding Orthodontic Adhesive using Thermal Heating

Tsuruoka

Namura

2007

Dent. Mater. J.

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We produced experimentally a new bonding material that consisted of a mixture of a base resin (4-META/MMA-TBB resin adhesive) and thermoexpandable microcapsules for safe, easy debonding. Microcapsules in the base resin would start expansion at 80℃, leading to a remarkable decrease in bond strength. Stainless steel brackets were bonded to bovine permanent mandibular incisors using bonding materials containing the microcapsules at different contents. After thermal cycling or heating, the shear bond strength of the brackets was measured. Shear bond strength of the bonding materials containing 30-40 wt％ microcapsules decreased to about one-third or one-fifth that of the base resin on heating. Heating the brackets for eight seconds increased the temperature in the pulp chamber by 2℃, which should not induce pulp damage.Results obtained suggested that the new bonding material should prove useful for removing brackets easily at the time of bracket debonding without any pain or enamel cracks, while maintaining the bonding strength during active orthodontic treatment.

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“…5 To facilitate ceramic bracket removal, the bond strength can be reduced. Reduced bond strength can be achieved by chemically changing the bond between bracket and adhesive 6 or by using wood-burning pens, warm air dryers, specifically designed electrothermal debonding devices (ETD) or lasers that thermally soften the adhesive. 7 The limitation of these techniques is the increase in intrapulpal temperature which should never exceed 5.5°C as defined by Zach and Cohen.…”

Section: Introductionmentioning

confidence: 99%

Laser-Aided Ceramic Bracket Debonding: A Comprehensive Review

2016

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Different techniques have been introduced for the removal of ceramic brackets. Since the early 1990s, lasers have been used experimentally for debonding ceramic brackets. The goal of this study is to give a comprehensive literature review on laser-aided ceramic bracket debonding. PubMed and Google Scholar databases were used to identify dental articles with the following combination of key words: Ceramic brackets, Debonding, and Laser. Sixteen English articles from 2004 to 2015 were selected. The selected studies were categorized according to the variables investigated including the intrapulpal temperature, shear bond strength, debonding time, enamel damage and bracket failure. Most articles reported decreased shear bond strength and debonding time following laser irradiation without any critical and irritating increase in pulpal temperature. There were no reports of bracket failure or enamel damage. Laser irradiation is an efficient way to reduce shear bond strength of ceramic bracket and debonding time. This technique is a safe way for removing ceramic bracket with minimal impact on intrapulpal temperature and enamel surface and it reduces ceramic bracket failure.

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Comparison of different bonding materials for laser debonding

Cited by 55 publications

References 7 publications

Immediate and Delayed Effects of Diode Laser on Debonding of Ceramic Brackets: An in vitro Study

Immediate and Delayed Effects of Diode Laser on Debonding of Ceramic Brackets: An in vitro Study

Development of an Easy-debonding Orthodontic Adhesive using Thermal Heating

Laser-Aided Ceramic Bracket Debonding: A Comprehensive Review

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