Desensitizing bioactive agents improves bond strength of indirect resin-cemented restorations: preliminary results

Pires‐de‐Souza, Fernanda de Carvalho Panzeri; Marco, Fabíola Fiorezi de; Casemiro, Luciana Assirati; Panzeri, Heitor

doi:10.1590/s1678-77572007000200009

Cited by 22 publications

(25 citation statements)

References 33 publications

(48 reference statements)

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“…In contrast to expectations, the use of Biosilicate® did not reduce conducted light, which could impede penetration of the adhesive system, even with the use of phosphoric acid in the conventional system [20]. In contrast, this study found a significant increase in bond strength resulting from the application of Biosilicate® prior to conventional adhesive and self-etching adhesive.…”

Section: Discussioncontrasting

confidence: 99%

“…Under conditions similar to the present study, it has been observed that rubbing a Biosilicate® solution (0.5 g in distilled water in a 3:1 ratio) for 10 seconds on bovine dentin prior to the application of a conventional adhesive and a self-etching adhesive improved the bond strength values [20].…”

Section: Discussionsupporting

confidence: 78%

“…Statistically, resistance increased significantly only when Biosilicate® was associated with self-etching adhesive, although it is suggested that this result may have been due to the presence of phosphate methacrylates that favored hydrolytic stability of the system over the period tested [20]. In contrast to expectations, the use of Biosilicate® did not reduce conducted light, which could impede penetration of the adhesive system, even with the use of phosphoric acid in the conventional system [20].…”

Section: Discussionmentioning

confidence: 80%

“…Microscopic and spectrophotometric analysis suggested the formation of an adhesive layer of hydroxyapatite on the dentin surface that is hypothetically responsible for the permanent obliteration of dentinal tubules [20].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, there may have been not only a micromechanical interaction between the decalcified dentin substrate and adhesive system but also a micromechanical interaction between Biosilicate® particles that had already reacted with the dentin substrate and the polymerized adhesive system, enhancing adherence. Thus, particle size may have been a facilitating aspect for the penetration of Biosilicate® into the dentinal tubules, rather than the reverse [20].…”

Section: Discussionmentioning

confidence: 99%

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Efffect of desensitizing agents on the bond strength of dental adhesive systems

Andreatti¹,

Lopes²,

Guiraldo³

et al. 2014

Appl Adhes Sci

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The exposure of dentin to the oral environment leads to dentinal sensitivity, the treatment of which exposes the substrate to various substances that can alter its interaction with adhesive restorative materials. The objective of this study was to analyze whether the prior use of desensitizing agents interferes with the bond strength of resin restorative materials. A total of 48 molars were divided into six groups, according to conventional application (CV) of the adhesive systems Scotchbond Multipurpose (SB) and Clearfil SE Bond (CF) and their association with bioglass (BG/Biosilicate®) or arginine (AR/Sensitive Pro-Relief/TM). Bond strength was assessed by a microshear mechanical test, using a composite resin as restorative material (Filtek Z350 XT). Mechanical testing was performed at a speed of 0.5 mm/min in a universal testing machine, and the data were submitted to two-way ANOVA and Tukey's test (α = 0.05). The bond strength (MPa) was 17.03 for SBCV; 21.19 for SBAR; 26.24 for SBBG; 21.37 for CFCV; 27.09 for CFAR and 29.51 for CFBG group. A significant increase in bond strength (p <0.05) was observed when Biosilicate® was used prior to the conventional and self-etching adhesive systems. Fracture pattern analysis by means of optical microscopy showed a predominance of mixed type fractures, with the exception of the CFCV group, where adhesive fractures predominated. It is concluded that arginine did not interfere with the bond strength with dentin, while the use of Biosilicate® tended to strengthen the bond between dentin and the adhesive systems used.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Efffect of desensitizing agents on the bond strength of dental adhesive systems

Andreatti¹,

Lopes²,

Guiraldo³

et al. 2014

Appl Adhes Sci

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Morphology of sealant/enamel interface after surface treatment with bioactive glass

Pires‐de‐Souza

Silveira

Abuna

et al. 2015

Microscopy Res & Technique

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The purpose of this study was to analyze, by confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM), the morphology of sealant/enamel interface after surface treatment with Biosilicate. Before pits and fissures sealing, the occlusal surfaces of 10 sound human molars were sectioned perpendicularly at the fissures in order to obtain three slices for each tooth. Slices were randomly assigned into three groups (n = 10) according to sealing protocol: Group 1- Acid etching + Biosilicate + glass ionomer-based sealant (Clinpro XT Varnish, 3M ESPE); Group 2- Acid etching + glass ionomer-based sealant (Clinpro XT Varnish, 3M ESPE); Group 3- No sealing. All slices were subjected to thermal cycling (5,000 cycles; 5-55°C; dwell time: 30s). Half of the slices from each group (n = 5) were analyzed by CLSM and the other half by SEM. Groups 1 and 2 were also submitted to EDS analysis and their data were evaluated by Two-Way ANOVA e Tukey's test (α=5%). EDS data analysis showed higher amounts of silicon (Si) ions than calcium (Ca) ions in Group 1 (P < 0.05); Group 2 presented higher amounts (P < 0.05) of Ca ions than Si ions. It may be concluded that the use of Biosilicate for surface treatment did not affect the morphology of glass ionomer-based sealant/enamel interfaces.

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