A comparative study of shear bond strength of orthodontic bracket after acid-etched and Er:YAG treatment on enamel surface

Leão, Juliana Carneiro; Mota, Cláudia Cristina Brainer de Oliveira; Cassimiro-Silva, Patrícia Fernandes; Gomes, Anderson S. L.

doi:10.1117/12.2213810

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Laser beam reduces the calcium to phosphorus ratio and also reduce and evaporate water in surface enamel composition, thereby increasing enamel resistance to acid or any others enamel solvents [31].…”

Section: Discussionmentioning

confidence: 99%

Effect of enamel surface pretreatment with different laser types and antioxidizing agents office-bleaching on the shear bond strength of orthodontic brackets

Mirhashemi¹,

Sharifi²,

Emadian³

et al. 2020

Laser Phys.

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The aim of this study was to investigate orthodontics brackets shear bond strength (SBS) after pretreatment of bleached enamel surface with different laser types in comparison with antioxidants agent. A total of 150 sound human premolars were randomly assigned to into a control group which was experimental group (Group A) as bleached with 40% HP bleaching agent and not bleached (Group B). Then, both control and experimental groups were divided into five subgroups.Subgroup 1: no surface treatment Subgroup 2: treated by Nd:YAG laser (1 W, 100 µs, 10 Hz) for 30 s. Subgroup 3: treated by Er: YAG laser (0.5 W, 230 µs, 10 Hz, 5 mm distance) for 30 s. Subgroup 4: treated by CO 2 laser (0.5 W, 10 Hz, pulse width of 1 ms) for 30 s. Subgroup 5: conditioned by 10% sodium ascorbate solution for 10 min.Then, the metal premolar brackets were bonded to conditioned enamel surface. All the specimens were debonded using the Universal Testing Machine. The data were analyzed by One-way analysis of variance and the Tukey's HSD. The SBS values of brackets bonded to bleached enamel in subgroup 1(no surface pretreatment) and 2(surface pretreatment with Nd:YAG laser) were significantly lower than subgroup 3(surface pretreatment with Er: YAG laser) and subgroup 4 (surface pretreatment with CO 2 laser). The lowest SBS belonged to brackets bonded to bleached enamel in the subgroups 1 and 2, also the SBS values in subgroup 2 and subgroup 3 were significantly higher than subgroup 5. Pretreatment with Er: YAG and CO 2 laser will improve SBS on bleached enamel surface more efficiently than surface pretreatment with Nd:YAG laser or antioxidant agent.

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Section: Discussionmentioning

confidence: 99%

Effect of enamel surface pretreatment with different laser types and antioxidizing agents office-bleaching on the shear bond strength of orthodontic brackets

Mirhashemi¹,

Sharifi²,

Emadian³

et al. 2020

Laser Phys.

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“…The importance of preparation of the enamel surface for the successful bonding has been well established. [8–13] To bond dental restorations or correction devices such as veneer, orthodontic brackets, and resin composite restorations to enamel, various methods to prepare enamel surfaces have been applied, including acid etching, laser treatment, and sandblasting. [12] Among these, phosphoric acid etching has been used as the gold standard in esthetic dentistry due to its proven effectiveness in producing microporosity in healthy enamel, [14] and therefore, we used phosphoric acid for acid etching of enamel in the present study.…”

Section: Discussionmentioning

confidence: 99%

Effect of phosphoric acid concentration used for etching on the microtensile bond strength to fluorotic teeth

Lv²,

He³

et al. 2018

Medicine

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To evaluate the effects of different etching concentrations of phosphoric acid on the microtensile bond strength of Adper Single Bond 2 to fluorotic teeth.Deidentified extracted teeth were collected, including 30 sound teeth, 30 teeth with mild fluorosis, 30 teeth with moderate fluorosis, and 30 teeth with severe fluorosis. The teeth in each group were randomly divided into 3 subgroups (n = 10) that were subjected to acid etching using 35%, 40%, or 45% phosphoric acid. Adper Single Bond 2 (3M, Saint Paul, MN) was used as the adhesive for bonding Z250 universal resin (3M) to the etched dental enamel. Microtensile testing was used to determine the bond strength. After the microtensile test, the fractured specimens were examined under scanning electron microscopy (SEM).Both dental fluorosis and concentrations of phosphoric acid significantly affected the microshear bond strength of Adper Single Bond 2 to dental enamel. The maximum bond strength was achieved by using 40% phosphoric acid. Failure analysis showed that most failures occurred at the bonding interface. The rates of failures at the bonding interface decreased as the degree of fluorosis increased and as the concentration of phosphoric acid increased from 35% to 45%.The bond strength of fluorosis tooth was lower than that of healthy tooth, the bond strength increased with the increasing concentration of phosphoric acid, but an excessively high acid concentration can conversely lead to an apparent decline in bond strength.

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Influence of Primer Pre-curing and Co-curing on Shear Bond Strength of Orthodontic Brackets Using Three Light-cure Adhesive Systems: An In Vitro Study

Parayaruthottam¹,

Antony²,

Roshan³

et al. 2023

The Journal of Contemporary Dental Practice

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A comparative study of shear bond strength of orthodontic bracket after acid-etched and Er:YAG treatment on enamel surface

Cited by 3 publications

References 20 publications

Effect of enamel surface pretreatment with different laser types and antioxidizing agents office-bleaching on the shear bond strength of orthodontic brackets

Effect of enamel surface pretreatment with different laser types and antioxidizing agents office-bleaching on the shear bond strength of orthodontic brackets

Effect of phosphoric acid concentration used for etching on the microtensile bond strength to fluorotic teeth

Influence of Primer Pre-curing and Co-curing on Shear Bond Strength of Orthodontic Brackets Using Three Light-cure Adhesive Systems: An In Vitro Study

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