Effect of 38% carbamide peroxide on the microleakage of silorane-based versus methacrylate-based composite restorations

Kamangar, Sedighe Sadat Hashemi; Ghavam, M; Mahinfar, Nazanin; Pourhashemi, S J

doi:10.5395/rde.2014.39.3.172

Cited by 4 publications

(8 citation statements)

References 36 publications

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“…After The bleaching mechanism relies on the reaction of free radicals resulting from the disintegration of hydrogen peroxide with the pigmented carbon macromolecules [14]. The bleaching agents can penetrate the restoration margins with a proper seal or through the restorative material's porosities, resulting in microleakage [3]. Furthermore, adsorption of salivary proteins to the surface of composite resin that has been subjected to a bleaching procedure might decrease, affecting the adhesion of cariogenic bacteria, such as S.…”

Section: Dye Penetrationmentioning

confidence: 99%

“…In addition, an increase was observed in microleakage of the gingival margins of Z250 ® composite resin [5]. Bleaching with 30% hydrogen peroxide increased the microleakage of silorane-based composite resins significantly at the gingival margins compared to methacrylate-based composite resins [3].…”

Section: Dye Penetrationmentioning

confidence: 99%

“…For more durable results, bleaching of the vital teeth is usually carried out using the office bleaching followed by home bleaching techniques. Office bleaching entails the application of 35-38% hydrogen peroxide on the tooth surface for 30-45 minutes; and the home bleaching is usually carried out with the use of 10-20% carbamide peroxide in prefabricated special trays, which are worn by the patients at nights [3].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, resin coatings have been considered to decrease discoloration and improve marginal integrity [3]. Studies have shown that the coating material exhibits a strong bond to enamel, dentin, composite, glass ionomer and resin-modified glass ionomer; thus, it can improve the marginal sealing between the tooth and the restorative material, prevents restoration discolorations, increases resistance to abrasion and results in a maturation effect in glass-ionomer restorations [7,11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

Hajilou¹,

Zajkani

Naghili

2020

Pesqui. Bras. Odontopediatria Clín. Integr.

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To evaluate the effect of a resin coating material on the microleakage of Class V composite resin restorations with and without post-operative bleaching. Material and Methods: Eighty class V cavities (3×3×1.5 mm) were prepared and filled with Z250 XT composite resin in the buccal and lingual surfaces of 40 sound human molars. Then the samples were randomly divided into 4 groups (n=20) and treated as follows: Group A: applying a resin coating (G-Coat Plus) on the restoration, then bleaching with 40% hydrogen peroxide; Group B: Post-Operative bleaching without prior use of resin coating; Group C: applying resin coating agent, and no further bleaching; and Group D: no resin coating, no bleaching. The specimens were thermocycled and immersed in 1% methylene blue for 24 hours, then cut into sections bucco-lingually. The samples were scored regarding the amount of dye penetration under a stereomicroscope (x20). Data were analyzed with Chi-squared and Fisher exact tests (p<0.05). Results: The maximum gingival and occlusal microleakage was detected in group B, while the minimum was seen in group C. In all the groups, microleakage at gingival margins was higher than occlusal margins (p<0.001). Conclusion: Application of a resin coating is an effective method in reducing microleakage of the restorations before and after bleaching.

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Section: Dye Penetrationmentioning

confidence: 99%

Section: Dye Penetrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

Hajilou¹,

Zajkani

Naghili

2020

Pesqui. Bras. Odontopediatria Clín. Integr.

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“…In this study, we evaluate the microleakage between self-adhesive, self bonded composite material and other three conventional composite type when restoring CII proximal cavities. Many techniques have been used to decrease the amount of microleakage, like (applying a thicker adhesive coat below the composite resin, using the incremental technique, resin matrix changing and production of composite resins having small polymerization shrinkage), may help reduce the polymerization shrinkage and the stress resulted (4) .…”

Section: Introductionmentioning

confidence: 99%

Gingival Marginal Leakage of Different Tooth Colored Materials Combination as an Intermediate Layer in Class II Composite Restoration : A Comparative in Vitro Study

Salih¹,

Hussain²

2016

JBCD

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Background: The aim of this in vitro study was to evaluate and compare the microleakage between Vertise Flow T M composite material and other conventional (Filtek Z250, riva light cure and SDR) composite materials when restoring CII mesial box only cavity at gingival margin through die penetration test Materials and methods: Forty maxillary first premolars were prepared with class II box design only cavities. Samples were divided into four groups of ten teeth according to material used: group I (FiltekZ250 only). Group II (SDR+FiltekZ250). Group III (Vertise Flow +FiltekZ250). Group IV (Riva light cure+ FiltekZ250). After 24 hrs. immersion in 2% in methylene blue, samples were sectioned and micro leakage was estimated. Results: None of the materials showed zero score for dye penetration. Micro leakage percentage in group III had lowest value; followed by group IV then group I while in group II had highest value of micro leakage Conclusion: All the materials show micro leakage at variable degrees and that the microleakage degree depend on materials type Vertise flow is a promising material to be used in clinic as it saves both time and effort and gives high degree of performance from the microleakage point of view.

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Does Bleaching Affect the Microleakage of Class II Restoration with Bulk-Fill Composite?

Zajkani

Rahbar

Motamed

et al. 2022

International Journal of Dentistry

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Introduction. The use of technology in bulk-fill composites (BCs) has reduced the stresses caused by polymerization shrinkage, debonding, microleakage, or posttreatment sensitivity in them. This study was conducted to determine whether bleaching affects the microleakage of class II restoration with bulk-fill material. Materials and Methods. This laboratory study was performed on 40 normal human premolars in 4 groups (n = 20). Class II cavities were prepared in mesial and distal surfaces of the teeth with dimensions of 2 × 2 × 4 mm. Then, based on the bleaching process by 20% carbamide peroxide gel and using two types of composites, the restored cavities were randomly divided into 4 groups: (1) CC without bleaching (CC group), (2) BC without bleaching (BC group), (3) CC with bleaching (CCB group), and (4) BC with bleaching (BCB group). Then, the samples were thermocycled for 1000 cycles at a temperature range of 5–55°C, and they were immersed in 0.6% alkaline fuchsine in order to penetrate into the pigment for 24 h. After cutting, the samples were placed under a stereomicroscope (40%) to determine microleakage. The data were analyzed using one-way analysis of variance (ANOVA), and a p value <0.05 was considered as statistically significant. Results. Microleakage was determined in the CC group 0.97 ± 0.42 , BC group 1.08 ± 0.54 , CCB group 1.19 ± 0.37 , and BCB group 0.30 ± 0.47 . There were also no significant differences in the mean microleakage between the groups. No cases with zero microleakage (no microleakage) and grade 3 of microleakage (pigment penetration into the axial wall) were observed in the samples. Also, a two-by-two comparison of significant differences between CC and BC groups p = 0.89 , CC and CCB groups p = 0.45 , CC and BCB groups p = 0.11 , BC and CCB groups p = 0.87 , BC and BCB groups p = 0.41 , and CCB and BCB groups p = 0.86 showed that the difference was not statistically significant. Conclusion. Results showed no difference between microleakage of BC and CC with and without bleaching, and bleaching had the same effect on microleakage of these two types of composites.

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Effect of 38% carbamide peroxide on the microleakage of silorane-based versus methacrylate-based composite restorations

Cited by 4 publications

References 36 publications

Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

Effect of a Resin Coating Material on the Microleakage of Class V Restorations With or Without Post-Operative Bleaching

Gingival Marginal Leakage of Different Tooth Colored Materials Combination as an Intermediate Layer in Class II Composite Restoration : A Comparative in Vitro Study

Does Bleaching Affect the Microleakage of Class II Restoration with Bulk-Fill Composite?

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