Consequences of enamel preparation with sodium hypochlorite, polyacrylic and phosphoric acids for the bonding of brackets with resin-modified glass ionomer cements

Trindade, Alessandra Marques; Pereira, Tatiana Bahia Junqueira; Neto, Perrin Smith; Horta, Martinho Campolina Rebello; Pithon, Matheus Melo; Akaki, Emílio; Oliveira, Dauro Douglas

doi:10.1590/s1516-14392013005000151

Cited by 1 publication

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References 19 publications

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“…11,23 On the other hand, several studies have shown that de deproteinization with NaOCl decreased the bond strength of metallic bracket due to incapacity of improving the quality of the decalcification pattern. 24,25 The results of the present study are in accordance to Trindade et al, 24 in which the application of NaOCl significantly decreased the bond strength to sound enamel. Additionally, it is known that NaOCl forms reactive free radicals and can inhibit the adequate polymerization.…”

Section: Discussionsupporting

confidence: 92%

Effect of surface treatments on the adhesive properties of metallic brackets on fluorotic enamel

Huilcapi

Vega

Cardenas

et al. 2020

Dental Press J. Orthod.

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Objective: To compare the effectiveness of the pretreatment with sandblasting and deproteinization with NaOCl on bond strength (SBS), in situ conversion degree (CD) of brackets in fluorotic enamel, and enamel etching pattern. Methods: A total of 90 non-carious maxillary premolars were used. The teeth were then assigned to six experimental groups according to: enamel surface (sound and fluorotic enamel); surface treatment (Regular etch with 37% phosphoric acid [RE]; 5.2% sodium hypochlorite + phosphoric acid [NaOCl + RE]; sandblasting + phosphoric acid [sandblasting + RE]). After storage in distilled water (37°C/24h), the specimens were tested at 1 mm/min until failure (SBS). Enamel-resin cement interfaces were evaluated for CD using micro-Raman spectroscopy. The enamel-etching pattern was evaluated under a scanning electron microscope. Data from SBS and in situ CD values were analyzed using ANOVA two-away and Tukey test (α=0.05). The enamel etching pattern was evaluated only qualitatively. Results: For sound enamel, RE showed the highest SBS values, when compared to NaOCl + RE and Sandblasting + RE groups (p< 0.01). Regarding CD, only NaOCl + RE significantly compromised the mean DC, in comparison with other groups (p= 0.002). For fluorotic enamel, the Sandblasting + RE group significantly increased the mean SBS values, in comparison with RE group (p= 0.01) and no significant change was observed for CD (p> 0.52). Conclusions: The application of NaOCl or sandblasting associated to phosphoric acid improved the SBS of the brackets in fluorotic enamel without compromising the CD of the resin cement, with improving of enamel interprismatic conditioning.

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Section: Discussionsupporting

confidence: 92%

Effect of surface treatments on the adhesive properties of metallic brackets on fluorotic enamel

Huilcapi

Vega

Cardenas

et al. 2020

Dental Press J. Orthod.

View full text Add to dashboard Cite

show abstract

Consequences of enamel preparation with sodium hypochlorite, polyacrylic and phosphoric acids for the bonding of brackets with resin-modified glass ionomer cements

Abstract: Index values among the evaluated groups (p > 0.05). Conclusion: The use of NaOCl combined with PAA increased the BS of brackets bonded with RMGIC. The deproteinization of the group treated with PA reduced the shear bond strength of the brackets.

Cited by 1 publication

References 19 publications

Effect of surface treatments on the adhesive properties of metallic brackets on fluorotic enamel

Effect of surface treatments on the adhesive properties of metallic brackets on fluorotic enamel

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