Comparison of shear bond strength and bonding time of a novel flash-free bonding system

Lee, Moon Young; Kanavakis, Georgios

doi:10.2319/011715-37.1

Cited by 38 publications

(49 citation statements)

References 12 publications

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“…In vitro studies of this bracket system have demonstrated adequate bond strength, 8,11 reduced bonding time, 11,12 and microleakage 8 comparable to traditional bonding systems. Grunheid et al 8 calculated the volume of silver nitrate microleakage under the Flash-Free system using microcomputed tomography, but they did not stress their samples prior to evaluation.…”

Section: Introductionmentioning

confidence: 91%

Microleakage under ceramic flash-free orthodontic brackets after thermal cycling

Kim

Kanavakis

Finkelman

et al. 2016

The Angle Orthodontist

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Objective: To compare microleakage under 3M Unitek's APC Flash-Free Adhesive Coated System bracket and the APC PLUS Adhesive Coated System bracket after thermal cycling. Materials and Methods: Forty freshly extracted human maxillary premolars were randomly divided into two groups and bonded with either a Flash-Free bracket or a PLUS bracket. After bonding, the samples were incubated in a water bath at 378C for 24 hours and thermocycled for 5000 cycles between 58C and 508C. All teeth were immersed in a 2% methylene blue solution for 24 hours, embedded in acrylic and sectioned in a buccolingual direction at approximately the center of the bracket. Microleakage was observed at the enamel-adhesive interface from the occlusal and gingival margins of the bracket base. Statistical analysis was conducted using the Mann-Whitney U-test. Results: The median microleakage was higher in the Flash-Free group, but the difference between the two groups was not statistically significant (P . .05). Conclusion: In a laboratory setting, there is no significant difference between the extent of microleakage under the APC Flash-Free Adhesive Coated System bracket and the APC PLUS Adhesive Coated System bracket after thermal cycling. (Angle Orthod. 2016;86:905-908)

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Section: Introductionmentioning

confidence: 91%

Microleakage under ceramic flash-free orthodontic brackets after thermal cycling

Kim

Kanavakis

Finkelman

et al. 2016

The Angle Orthodontist

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“…Adhesive-precoated brackets have been used widely in clinical orthodontics [9] as the tooth-bonding time is short [10]. Recently, systems precoated with "flash-free" adhesives have become available.…”

Section: Introductionmentioning

confidence: 99%

Effects of composition on the hardness of orthodontic adhesives

et al. 2020

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Although there have been improvements in bracket systems precoated with adhesive, removal of adhesive remnants continues to be problematic. This study compared the hardness and maintainability of precoated adhesive with other commercial adhesives. Knoop hardness values were measured after light-or chemical-induced initial curing, immersion in distilled water at 37°C for 24 h and 1,000 and 10,000 thermal cycles after 24 h. Additionally, the forces required to move brackets by 0.5 mm were measured during bracket positioning, and brackets bonded to bovine enamel were examined by field-emission scanning electron microscopy. The Knoop hardness values of the precoated adhesives were lower than those of commercial resin composite adhesives, and hardness was dependent on the amount of filler in the resin matrix. The ability to maintain the device position may depend on the resin matrix composition. Precoated adhesives with less filler and more matrix material are light curable, and remnant resin may be easily removed.

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“…13,14 Thus, 3M Unitek has developed a novel adhesive coated appliance system (APC Flashfree) to minimize flash amounts, to improve the bond strength and reducing the microleakage. [15][16][17] It is composed of a low viscosity resin applied to a non-woven polypropylene mesh that attached to the orthodontic bracket base. 17 The bond strength of flash-free adhesive to CAD/CAM provisional material has not been investigated previously.…”

Section: Introductionmentioning

confidence: 99%

Shear Bond Strength of Ceramic Orthodontic Brackets to CAD/CAM Provisional Materials: Influence of Surface Treatments and a Novel Adhesive System

Soliman

Ghorab

2018

Egyptian Dental Journal

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Objective:To evaluate the effect of surface treatments and flash-free adhesive on the shear bond strength of ceramic orthodontic brackets to CAD/CAM provisional materials. Materials and Methods:Specimens (n=160) from each provisional material (CAD-Temp and C-Temp) were categorized into four groups according to the surface treatment methods: C (no surface treatment), HP (37% H 3 PO 4 ), DB (mechanical roughening by diamond bur) and SB (mechanical roughening by sandblasting). Half of the specimens in each group were bonded to one of the maxillary central incisor ceramic brackets according to the used adhesive system: (APC PLUS or APC Flash-free). All specimens were 5000-times thermocycled before the shear bond strength testing (SBS). Data were analyzed using three-way ANOVA, Tukey's multiple comparison tests. The adhesive remnant index (ARI) was also evaluated. The level of significance was set at 5% for all statistical tests.Results: C-Temp significantly recorded higher SBS than CAD-Temp (p<. 001). DB and SB groups utilizing flash-free adhesive significantly recorded higher SBS (P<. 05) compared to other groups in the tested materials. Higher ARI scores were recorded in CAD-Temp and flash-free adhesive. Conclusions:Bonding of orthodontic brackets to provisional restorations is a challenge for orthodontists in adult comprehensive cases that could be improved by an appropriate material, surface treatments, and adhesive system. Mechanical surface treatments and flash-free adhesive would enhance SBS of ceramic orthodontic brackets to CAD/CAM provisional materials. The higher ARI scores reported with CAD-Temp and flash-free adhesive reduces chair time for excess removal.

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Comparison of shear bond strength and bonding time of a novel flash-free bonding system

Cited by 38 publications

References 12 publications

Microleakage under ceramic flash-free orthodontic brackets after thermal cycling

Microleakage under ceramic flash-free orthodontic brackets after thermal cycling

Effects of composition on the hardness of orthodontic adhesives

Shear Bond Strength of Ceramic Orthodontic Brackets to CAD/CAM Provisional Materials: Influence of Surface Treatments and a Novel Adhesive System

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