Evaluation of bovine and human teeth exposed to thermocycling for microleakage under bonded metal brackets

Canbek, Kerem; Karbach, Mareike; Gottschalk, Franziska; Erbe, Christina; Wehrbein, Heinrich

doi:10.1007/s00056-012-0123-y

Cited by 14 publications

(9 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[16][17][18][19] In the recent study, more than half the brackets of group A and almost all brackets of group B showed discoloration of some kind at any bracket edge. Although the protocol was used before, 20 showing a lower incidence of microleakages for conventional adhesive-bracket combination, this might be because in this study, only a yes/no decision was obtained. For further studies, the sensitivity of this specific testing procedure should be increased.…”

Section: Discussionmentioning

confidence: 98%

A new flash-free orthodontic adhesive system: A first clinical and stereomicroscopic study

Foersch

Schuster

Rahimi

et al. 2015

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To analyze the clinical and laboratory properties of the recently introduced APC flashfree orthodontic adhesive. Material and Methods: After bonding of 80 brackets on human teeth (group A: APC flash-free adhesive n 5 40, group B: APC Plus adhesive n 5 40), the following measurements were recorded: time for bonding, stereomicroscopic evaluation of excess adhesive, color penetration (methylene blue, 0.5%/24 h), and Adhesive Remnant Index (ARI) score after debonding. Results: The time needed for bonding differed significantly between the two groups (A: 19.5 s/ tooth vs B: 33.8 s/tooth). The adhesive excess, which was metrically measured from the bracket edge, ranged from 166.27 mm to 81.66 mm (group A) and 988.53 mm to 690.81 mm (group B). After methylene coloration in group A, 52 of 80 measurements showed discoloration on the bracketadhesive and/or adhesive-enamel interface, while for group B, 78 of 80 were coloration positive. The ARI scores did not differ, with an average ARI score of 2.0 for group A and 2.8 for group B. Conclusion: The flash-free adhesive significantly reduced the time needed for the bonding process. The excess resin expanded 0.16 to 0.08 mm over the bracket margin. The new technology seems to facilitate a smooth and sufficient marginal surface of the adhesive, which clinically might improve reduction of plaque accumulation. (Angle Orthod. 2016;86:260-264.)

show abstract

Section: Discussionmentioning

confidence: 98%

A new flash-free orthodontic adhesive system: A first clinical and stereomicroscopic study

Foersch

Schuster

Rahimi

et al. 2015

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…This repeated expansion and contraction at different coefficients results in fluids being sucked in and pushed out at the margins of the bracket. P (23) P In the present study, the dye penetration method was chosen to assess microleakage as it has been used in most of the previous orthodontic studies.P (6,9,24) P In general, study by Arhun and ArmanP (25) P , concluded that metal brackets contract and expand more than ceramic brackets producing microgaps between the bracket and the adhesive system causing leakage of oral fluids and bacteria beneath the brackets, leading to the formation of white spot lesion.…”

Section: Discussionmentioning

confidence: 99%

“…So, bracket designs with different surface characteristics create different bonding environments. (9) Recently, new generations of orthodontic adhesives were presented. The 5th generation of bonding systems is similar in principle to the 4th generation materials, except that it has been designed to require fewer stages in their placement in an attempt to reduce technique sensitivity and treatment time.…”

Section: Issn:1812-1217mentioning

confidence: 99%

“…The 5th generation of bonding systems is similar in principle to the 4th generation materials, except that it has been designed to require fewer stages in their placement in an attempt to reduce technique sensitivity and treatment time. (9) According to our best knowledge, no studies compared the microleakage among this complex combination of brackets and orthodontic adhesives.…”

Section: Issn:1812-1217mentioning

confidence: 99%

See 1 more Smart Citation

Microleakage Comparison among Three Orthodontic Brackets and Two Orthodontic adhesives

Al-Khatib¹,

Hamidi²

2013

RDENTJ

View full text Add to dashboard Cite

AIMS:To evaluate and compare the microleakage occlusally and gingivally under bracket-composite interface of sapphire ceramic, stainless steel and composite orthodontic brackets bonded with two different generations of orthodontic adhesives.MATERIALS AND METHODS: Seventy-two freshly extracted premolars were utilized in this study. Three types of orthodontic brackets were used as follows: sapphire ceramic, composite and stainless steel. The samples were divided into two main groups of 36 samples; one group was bonded with Resilience® adhesive, while the other was bonded with Biofix adhesive. Each group was further subdivided into three subgroups of 12 samples according to bracket types. After photopolymerization, the samples were thermocycled. Samples were sealed with nail varnish, stained with 2% methylene blue dye then sectioned occlusogingivally, examined under a stereomicroscope and measured for microleakage at the bracket-adhesive interface from both occlusal and gingival margins, evaluated statistically with ttests at p≤0.05 levels of significance. RESULTS: All groups showed various degrees of microleakage, however, no significant differences either between the two adhesives or among the three bracket types were recorded. Microleakage beneath sapphire brackets was significantly higher under the Biofix adhesive at the gingival side.CONCLUSION: No significant differences were recorded between the occlusal and gingival sites in all of the study groups.However, the 5th generation adhesive showed higher microleakage with significant difference under sapphire ceramic brackets at the gingival margin.Al-Hamidi MM, Al-Khatib AR, Microleakage Comparison among Three Orthodontic Brackets and Two orthodontic adhesives. Al-Rafidain Dent J. 2014; 14(2):312-319 .

show abstract

“…All the teeth were then etched for 30 s with 37% phosphoric acid solution (Ormco Etching Solution, Ormco, Glendora, California) followed by 5 s of water rinsing and 5 s of air drying. [11]…”

Section: Methodsmentioning

confidence: 99%

In vitro evaluation of microleakage under orthodontic brackets bonded with different adhesive systems

et al. 2017

View full text Add to dashboard Cite

Objective:Adhesives systems have a drawback when utilized for bonding orthodontic brackets: they shrink during photopolymerization creating microleakage. The aim of this study was to assess the stability of different orthodontic adhesives around brackets and enamel.Materials and Methods:Sixty noncarious mandibular premolars extracted for orthodontic reasons were randomly divided into six groups of adhesives used for bonding brackets to dental enamel: NeoBond® Light Cure Adhesive Kit, Transbond™ Plus Self-Etching, Victory V-Slot APC PLUS® + Transbond™ MIP, Rely-A-Bond® Kit, Light Cure Orthodontic Adhesive Kit (OptiBond®), and Transbond™ MIP. Following bonding, all teeth underwent 2500 cycles of thermal cycling in baths ranging from 5°C to 55°C before being immersed in 2% methylene blue for 24 h. All samples were examined under a binocular microscope to assess the degree of microleakage at the “bracket-adhesive” and “adhesive-enamel” interfaces in the gingival and occlusal regions of the bracket.Results:A significant difference was found at the “occlusal bracket-adhesive” interface. The highest microleakage values were found in the occlusal region, although no significant. Microleakage was observed in all groups.Conclusion:Group 2 had the highest microleakage values whereas Group 6 had the lowest values.

show abstract

Evaluation of bovine and human teeth exposed to thermocycling for microleakage under bonded metal brackets

Abstract: Immediately after bonding, less microleakage was observed around the base of metal brackets on human than bovine teeth. These marginal gaps were, however, superficial in both groups, none of them involving deep penetration of dye under the bracket base.

Cited by 14 publications

References 31 publications

A new flash-free orthodontic adhesive system: A first clinical and stereomicroscopic study

A new flash-free orthodontic adhesive system: A first clinical and stereomicroscopic study

Microleakage Comparison among Three Orthodontic Brackets and Two Orthodontic adhesives

In vitro evaluation of microleakage under orthodontic brackets bonded with different adhesive systems

Contact Info

Product

Resources

About