Microleakage under Metallic and Ceramic Brackets Bonded with Orthodontic Self-Etching Primer Systems

Uysal, Tancan; Ülker, Mustafa; Ramoğlu, Sabri İlhan; Ertaş, Hüseyin

doi:10.2319/100507-481.1

Cited by 42 publications

(54 citation statements)

References 19 publications

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“…17,18 Considering the point that there is continuous thermal stress in the oral environment between the teeth surface and resin, in vitro thermal simulation using thermal cycles between 5 and 55º was used in the present study. 9 The adhesive material used in the present study was different from that of Ulker et al's 10 that could be the reason for the difference in the results of these two studies. The contraction of the adhesive during polymerization depends on the constituents of the adhesive.…”

Section: Discussioncontrasting

confidence: 62%

“…The contraction of the adhesive during polymerization depends on the constituents of the adhesive. 9 Due to the present study data, the mean value of microleakage at the gingival margin was significantly higher than the occlusal portion. This result confirms the results of the studies by Ulker et al, 10 Uysal et al 18 and Arhan et al, 8 but is in contrast to the result of Yagci et al 19 This difference can be explained by first, the curvature on the gingival portion in comparison to the occlusal.…”

Section: Discussionmentioning

confidence: 43%

“…The studies examining the rate of microleakage beneath the bracket bases have reported microleakage to be present in all of the groups. [7][8][9][10] There has been reported more bracket-adhesive microleakage in metal brackets compared to ceramic brackets. 7,8 Ceramic brackets cured with LED have shown lesser rate of microleakage as compared to QTH cured.…”

Section: Introductionmentioning

confidence: 99%

“…7 The results of certain studies have shown that the microleakage on the gingival margin is much more significant than the amount on the occlusal margin. 9 Ulker et al studied the microleakage of the enameladhesive-bracket complex in metal brackets cured with ordinary and high intensity light. They showed that high intensity light does not cause more microleakage than ordinary light and advocated their routine use.…”

Section: Introductionmentioning

confidence: 99%

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In vitro Evaluation of Microleakage under Ceramic and Metal Brackets Bonded with LED and Plasma Arc Curing

Davari

Yassaei²,

Karandish³

et al. 2012

The Journal of Contemporary Dental Practice

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Aim:The aim of the present study was to evaluate these two high intensity light curing units regarding microleakage beneath metal and ceramic brackets. Materials and methods:A total of 60 freshly extracted human premolar teeth were randomly divided into four groups of 15 samples; group I: Metal bracket + LED cured, group II: Ceramic bracket + LED cured, group III: Metal bracket + plasma arc cured, group IV: Ceramic bracket + plasma arc cured.After photopolymerization, the teeth were immersed in water and thermocycled (500 cycles between 5 and 55). Specimens were further sealed with nail varnish and stained with 5% basic fuchsin for 24 hours. All of the teeth were sectioned with two parallel longitudinal occlusogingival cuts and examined under a stereomicroscope. The microleakage was measured with a digital caliper and scored from 0 to 3 for marginal microleakage at the bracket-adhesive and adhesive-enamel interfaces from both the occlusal and gingival margins. Results:Microleakage was detected in all groups. The plasma arc cured group showed less microleakage than light emitting diode (LED) cured in all samples at the enamel-adhesive interface at the gingival margin (ceramic brackets, p = 0.009 and metal brackets, p = 0.005). The plasma arc cured samples showed less microleakage than LED cured in metal brackets at the adhesive-brackets interface at the occlusal margin (p = 0.033). While curing with an LED unit, ceramic brackets displayed significantly less microleakage than metal ones at the gingival margin of adhesive-enamel interface (p = 0.013).The gingival margin in all groups exhibited higher microleakage compared with those observed in occlusal sides in all sample groups (p < 0.001). Conclusion1. LED units cause more microleakage than plasma arc units. 2. In all groups the microleakage at the gingival margin is greater than the occlusal margin.Clinical significance: The microleakage formation permits the passage of bacteria and oral fluids initiating white spot lesions beneath the bracket base.

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Section: Discussioncontrasting

confidence: 62%

Section: Discussionmentioning

confidence: 43%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In vitro Evaluation of Microleakage under Ceramic and Metal Brackets Bonded with LED and Plasma Arc Curing

Davari

Yassaei²,

Karandish³

et al. 2012

The Journal of Contemporary Dental Practice

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show abstract

“…Several techniques have been introduced to assess microleakage around dental restorations. Dye penetration is a commonly used methodology in restorative dentistry and also in orthodontics 13,22 because it provides a simple, relatively cheap, quantitative, and comparable method of evaluating the performance of the various techniques. This methodology involves exposure of the samples to a dye solution and then viewing cross-sections under a light microscope.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Microleakage in Metal Brackets Bonded using Self-etching Adhesive with and without Fluoride Release: An in vitro Study

Namboori

Gandikota

Challa

et al. 2012

JIOS

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Objective: To evaluate and compare the extent of microleakage directly beneath the metal brackets bonded to extracted premolar teeth using self-etching-primers (SEP) with and without fluoride release and conventional acid etching using 37% phosphoric acid. Materials and methods: Sixty extracted premolars were segregated into three groups. Forty teeth were etched with SEP, out of which 20 were etched with fluoride containing SEP (Xeno 3) and 20 with nonfluoride SEP (easy one). These two groups were compared with a control group etched with conventional 37% phosphoric acid. 3M Unitek brackets were bonded following manufacturer's instructions and specimens were kept in distilled water and thereafter subjected to thermal cycling. The specimens were stained with 0.5% basic fuschin for 24 hours, sectioned and photographed under a microscope. Microleakage was observed in all the groups and was scored with regard to the adhesive -tooth interface in both the gingival and incisal margins. Statistical analysis was accomplished by Kruskal-Wallis test and statistical significance set at p < 0.05. Results: Even though microleakage was observed in all the groups, the results indicate that these are not clinically significant (p < 0.132). Brackets bonded with SEP without fluoride released showed more microleakage than brackets bonded with SEP with fluoride release. Conclusion: Addition of fluoride in the orthodontic adhesive system reduces the severity of microleakage but does not eliminate its incidence totally.

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In vitro evaluation of microleakage under orthodontic brackets using two different laser etching, self etching and acid etching methods

2009

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This study evaluated the microleakage of brackets bonded by four different enamel etching techniques. Forty freshly extracted human premolars were divided randomly into four equal groups and received the following treatment: group 1, acid etching; group 2, self-etching primer (SEP); group 3, erbium:yttrium-aluminum-garnet (Er:YAG) laser etching; and group 4, erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser etching. After photopolymerization, the teeth were kept in distilled water for 1 month and then subjected to 500 thermal cycles. Then, the specimens were sealed with nail varnish, stained with 0.5% basic fuchsin for 24 h, sectioned, and examined under a stereomicroscope. In addition, they were scored for marginal microleakage at the adhesive-enamel and bracket-adhesive interfaces from the incisal and gingival margins. Statistical analyses consisted of the Kruskal-Wallis test and the Mann-Whitney U test with Bonferroni correction. Microleakage occurred between the adhesive-enamel and bracket-adhesive interfaces in all groups. For the adhesive-enamel surface, a significant difference was observed between group 1 and groups 2 (P = 0.011), 3 (P = 0.002), and 4 (P = 0.000) on the gingival side. Overall, significant differences were observed between group 1 and groups 3 (P = 0.003) and 4 (P = 0.000). In dental bonding procedures, acid etching was found to result in the least microleakage. Since etching with a laser decreases the risk of caries and is time-saving, it may serve as an alternative to acid etching.

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Microleakage under Metallic and Ceramic Brackets Bonded with Orthodontic Self-Etching Primer Systems

Cited by 42 publications

References 19 publications

In vitro Evaluation of Microleakage under Ceramic and Metal Brackets Bonded with LED and Plasma Arc Curing

In vitro Evaluation of Microleakage under Ceramic and Metal Brackets Bonded with LED and Plasma Arc Curing

Comparison of Microleakage in Metal Brackets Bonded using Self-etching Adhesive with and without Fluoride Release: An in vitro Study

In vitro evaluation of microleakage under orthodontic brackets using two different laser etching, self etching and acid etching methods

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