Composite resin shear bond strength on bleached dentin increased by 35% sodium ascorbate application

Nugraheni, Tunjung; Nuryono, Nuryono; Sunarintyas, Siti; Mulyawati, Ema

doi:10.20473/j.djmkg.v50.i4.p178-182

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…11 Similarly, Nugraheni et al revealed that two applications of 35% sodium ascorbate could increase the strength of composite resin shear in teeth after bleaching with 35% H 2 O 2 . 12 Coppla et al also demonstrated that double application of 35% sodium ascorbate in 5-10 minute intervals could restore the bonding strength of post-bleaching enamel as well as non-bleached enamel. 7 Sodium ascorbate is a derivative of ascorbic acid which is widely used as an antioxidant, but has unstable properties, and thus to achieve effective results it is necessary to add substances that can increase the stability of sodium ascorbate, including stabilizers or preservatives, such as citric acid, boric acid or tartaric acid, synergists, and emulsifiers such as surfactants.…”

Section: Introductionmentioning

confidence: 97%

Effect of surfactant concentration in sodium ascorbate on contact angle and tensile bond strength after bleaching

Yulianasari

Santosa²,

Nugraheni³

2022

Majalah Kedokteran Gigi Indonesia

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Free radical residue due to intracoronal bleaching using 35% hydrogen peroxide (HP) can be removed with 35% sodium ascorbate (SA) combined with surfactants. This study aimed to determine the effect of surfactant concentration in SA 35% on the contact angle and tensile bond strength of composite resin after intracoronal bleaching with 35% HP. The contact angle was observed in 3 groups of 35% SA: group 1 (without surfactant); group 2 (with 0.2% surfactant); group 3 (with 0.4% surfactant). Each sample was dropped on a glass slide perpendicularly, then the image was taken at the fifth minute and contact angle value was obtained using ImageJ software. Tensile bond strength in this study used 21 premolars, which were cut and fixed with acrylic resin. 35% HP (0.01 ml) was applied to tooth surface for 5 days, then washed and dried. Specimens were divided into 3 groups, each of which was applied with 0.01 ml 35% SA without surfactant (group 1), 35% SA with 0.2% surfactant (group 2), and 35% SA with 0.4% surfactant (group 3) for 5 minutes, before they were washed and dried. All specimens were filled with composite resin, and incubated in artificial saliva for 7 days inside an incubator (37oC) before the specimens were tested with Universal Testing Machine (speed 0.5 mm/minute). ANOVA analysis showed the effect of surfactant concentration in 35% SA on the contact angle and tensile bond strength after intracoronal bleaching with 35% HP. In conclusion, 35% SA with 0.4% surfactant had a smaller contact angle and application of 35% SA with 0.4% surfactant after intracoronal bleaching with 35% HP had a greater tensile bond strength.

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Section: Introductionmentioning

confidence: 97%

Effect of surfactant concentration in sodium ascorbate on contact angle and tensile bond strength after bleaching

Yulianasari

Santosa²,

Nugraheni³

2022

Majalah Kedokteran Gigi Indonesia

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“…So, the termination process occurs earlier in the formation of polymer chains. 4 The inhibition of the resin tag penetration and polymerization process can reduce physical properties such as the bond strength of adhesive material to dentin, and increase the microleakage of composite resin restorations. 4 Previous studies have stated that naturally, free radicals in the dentinal tubules take one to three weeks to disappear.…”

Section: Introductionmentioning

confidence: 99%

“…4 The inhibition of the resin tag penetration and polymerization process can reduce physical properties such as the bond strength of adhesive material to dentin, and increase the microleakage of composite resin restorations. 4 Previous studies have stated that naturally, free radicals in the dentinal tubules take one to three weeks to disappear. 5 However, delayed restoration can lead to a higher risk of crown fracture and loss of temporary restorations, leading to re-discoloration.…”

Section: Introductionmentioning

confidence: 99%

Effect of green tea extract antioxidant on dentin shear bond strength and resin-tag penetration depth after non-vital bleaching

et al. 2023

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Background: 35% Hydrogen peroxide (H2O2) as an active material for internal bleaching can produce free radicals that can affect resin tag penetration into the dentinal tubules. Application of 10% and 35% green tea (GT) extract as an antioxidant after 2 minutes are expected to remove free radical residues and increase dentin shear bond strength and resin tags penetration depth after non-vital bleaching. Methods: 30 extracted healthy human premolars were cut horizontally 2 mm from the Cemento Enamel Junction margin to the crown part, then cut in a mesio-distal direction into two parts. The specimens were divided into five groups: normal dentin, post bleaching dentin, delayed 2 weeks, 10% GT, and 35% GT group. Non-vital walking bleach with 35% H2O2 gel was done to all groups except control group. Soon after, 10% and 35% GT extract gel were applied on dentin for 2 minutes, then the specimens were rinsed-off with aquabidest for 2 minutes and dried. All specimens were etched and bonded with an etch-and-rinse adhesive system and filled with resin composite. The shear bond strength assessment was carried out using a Universal Testing Machine (UTM) with a cross-head speed of 0.5 mm/minute. Confocal laser scanning microscopy (CLSM) with a wavelength of 560 nm and a lens magnification of 40x was used to analyze the resin tag penetration. Data were analyzed by one way ANOVA and t-test. Results: There was a significant difference in resin tag penetration depth and shear bond strength between applying 10% and 35% GT extract (p < 0.05). The 35% GT extract group resulted in a significantly longer resin tag penetration than the 10% GT extract group. Conclusions: The application of 35% GT extract is more effective than 10% GT extract as an antioxidant for increasing the shear bond strength of composite resin after internal bleaching.

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“…In this research the magnitude of force acceptable for composite resin restorations was measured when the restorations were detached from the tooth surface. Shear strength can indicate how the adhesion occurs in vitro 16 .…”

Section: Introductionmentioning

confidence: 99%

Lemon Extract as an Alternative Etching Materials on Composite Resin Restoration Against Shear Strength

2020

MLU

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Background: Composite restoration is an adhesive (mechanical interlocking) restoration, which is from resin tags on micro porosity on the etched surface of the enamel. Etching is to clean the smear layer and forming porous on the enamel surface as to provide mechanical retention in the restoration. The acidic etching material that is often used is phosphoric acid with a concentration of 37%, but 37% phosphoric acid can cause inflammatory cell infiltration. Lemon contains citric acid, a weak acid that has the potential to be an alternative to acid etching.Purpose: To find out the effect of lemon extract as an alternative etching material on the shear strength of composite resin.Method: 14 samples of bovine teeth incisors were divided into two groups. Each group consisted of 7 samples, then cavity preparation. Group 1 with 37% phosphoric acid etching, group 2 with lemon extract. The samples were bonded, filled with composite resin and carried out shear strength tests. Results:There was no significant difference in shear strength from the composite resin group with 37% phosphoric acid etching and composite resin group with lemon extract. Conclusion:Lemon extract can be used as an alternative material for acid etching in composite resin.

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Composite resin shear bond strength on bleached dentin increased by 35% sodium ascorbate application

Abstract: Background: Restoration of the teeth immediately after bleaching with 35% hydrogen peroxide (H 2 O 2 ) is contraindicated due to the remnant of free radicals that will stay inside enamel and dentin for 1-

Cited by 4 publications

References 16 publications

Effect of surfactant concentration in sodium ascorbate on contact angle and tensile bond strength after bleaching

Effect of surfactant concentration in sodium ascorbate on contact angle and tensile bond strength after bleaching

Effect of green tea extract antioxidant on dentin shear bond strength and resin-tag penetration depth after non-vital bleaching

Lemon Extract as an Alternative Etching Materials on Composite Resin Restoration Against Shear Strength

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