Análise da microinfiltração de restaurações em dentes posteriores hibridizados com adesivo autocondicionante após armazenagem

Couto, Aline Maria do; Alevato, Allice Banni; Andrade, Carolina Oliveira de; Devito, Karina Lopes; Sálvio, Luciana Andrea

doi:10.1016/j.rpemd.2015.12.004

Cited by 1 publication

(3 citation statements)

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“…This component has a strong interaction with dental tissues because its structure includes an acidic functional group. This interaction has shown better resistance to degradation, preventing the formation of micro-and nano-infiltrations 9,21,22 . It has also been observed that this monomer adheres firmly to hydroxyapatite, forming a salt that is difficult to dissolve in water 21 , increasing the number of cross-links and resin matrix resistance and decreasing polymerization shrinkage, reducing the possibility of microleakage 22,23 .…”

Section: Discussionmentioning

confidence: 99%

“…Besides the strong bond with the hydroxyapatite of enamel and dentin, the 10-MDP phosphate group can bond electrostatically with calcium ions, thus the acids present a chemical affinity to the hydroxyapatite calcium, promoting the release of phosphate ions and hydroxide (adhesion-decalcification concept). Therefore, adhesive systems with 10-MDP can form MDP-Ca salts, which have the following characteristics: stability, longevity, and resistance to hydrolysis 22,23 .…”

Section: Discussionmentioning

confidence: 99%

“…Yuan et al 24 evaluated the effectiveness of adhesive systems for nano-infiltration and reported that Clearfil SE bond (two steps) and Clearfil S3 Bond (single step), through electron microscopy analysis, showed greater sealing ability, and both contained 10-MDP in their compositions. By conducting two independent studies 24 , Couto et al 22 evaluated the marginal sealing of human molars after 24 hours and one year, with or without acid-etching the cavosurface angle, and found no significant difference at 24 hours, but the group of teeth etched with 37% phosphoric acid affected marginal microleakage after one year of storage in deionized water.…”

Section: Discussionmentioning

confidence: 99%

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Influence of cavo superficial enamel acid-etching on the microtensile bond strength of low-shrinkage composite resin

Borghi

Coppini

Pierote

et al. 2020

Rev. odontol. UNESP

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Introduction To prevent the shrinkage stresses produced during polymerization, composite resins of low polymerization shrinkage were developed. Objective To evaluate the microtensile bond strength in class I cavities restored by acid-etching the cavosurface angle and with composite resins indicated for posterior teeth. Material and method 48 healthy molars were selected and divided into six groups (n = 8), considering that the cavosurface enamel of three groups was etched with 35% phosphoric acid. The teeth were restored with the Clearfil SE Bond adhesive system and Filtek Z350 XT, Empress Direct, and Charisma Diamond composite resins, which were light-cured for 40 seconds. After 24 hours, the teeth were taken to a cutting machine, which produced sections in the buccolingual and mesiodistal directions. This resulted in toothpicks of 0.9×0.9 mm that were taken to the universal testing machine for the microtensile bond strength test. Statistical analysis was performed with ANOVA and Tukey’s test (p < 0.05). Result There was no statistically significant difference between the groups evaluated. Conclusion Acid-etching the cavosurface angle did not affect the performance of restorations, probably due to the adhesive system used.

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