To Compare the Microleakage Among Experimental Adhesives Containing Nanoclay Fillers after the Storages of 24 Hours and 6 Months

Mousavinasab, Sayed Mostafa; Atai, Mohammad; Alavi, Bagher

doi:10.2174/1874210601105010052

Cited by 20 publications

(18 citation statements)

References 24 publications

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“…(32) This was agreed with torkabadi et al, (33) who evaluated the durability of a HEMA free single step adhesive (G bond) and a HEMA containing adhesive (Tri-s-bond) after one year storage in water and they proved signi cant reduction in bond strength to dentin in HEMA containing group. This was agreed with Mousavinasab et al, (27) who found high microleakage at 6 months storage compared to one day when two adhesive systems were used (single bond and one step self-etch). They related their results to the concentration of HEMA in the bonding system.…”

Section: Resultssupporting

confidence: 91%

“…This could be related to the presence of high organic component, tubular con guration, uid pressure and the lower surface energy of dentin which makes bonding to enamel more stable. (27) Another explanation is the polymerization shrinkage which cannot be compensated with water sorption and stress relaxation. (16) The results of this study showed that six months period had statistically signi cantly the highest mean gap area in both occlusal and gingival margins.…”

Section: Resultsmentioning

confidence: 99%

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Effect of different bonding techniques on marginal adaptation of Harmonize composite resin at different storage times.

Alagha

2020

Preprint

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Background This study evaluated the effect of different bonding techniques on marginal adaptation of Harmonize composite resin at different storage times. Methods Hundred twenty upper premolars were divided into two main groups (n = 60) according to the type of the adhesive system used (self-etch adhesive system or total etch adhesive system). Each group was further divided into three subgroups (20 teeth each) according to the storage times into one day, three months and six months. Standardized Class II cavities were prepared and restored with Harmonize composite incrementally. Teeth were stored in distilled water at room temperature. After each storage time, teeth were sectioned buccolingually into two halves and examined under digital stereomicroscope for the purpose of gap formation detection and scanning electron microscope examination was done to evaluate resin-dentin interfaces. The recorded values were tabulated and statistically analyzed. Regression model using three-way Analysis of Variance (ANOVA) was used for testing significance of the effect of adhesive system, storage period and their interactions on the mean gap area. Tukey’s post-hoc test was used for pair-wise comparisons between the groups when ANOVA test is significant. The significance level was set at P ≤ 0.05. Results Self-etch adhesive system showed statistically significant higher mean gap area than Total-etch adhesive system at the occlusal and cervical margins. Six months period showed the statistically significant highest mean gap area. There was no statistically significant difference between 1 day and 3 months periods; both showed the statistically significant lowest mean gap area values respectively at the occlusal and cervical margins. Conclusions Total-etch adhesive system enhances the marginal adaptation when compared to self-etch adhesive system and the storage period of composite resin in water has adverse effect on the marginal adaptation to all groups with time.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Effect of different bonding techniques on marginal adaptation of Harmonize composite resin at different storage times.

Alagha

2020

Preprint

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“…bacteria, fluids, molecules, or ions between a cavity wall and the restoration [4]. Different approaches have been introduced in an attempt to decrease microleakage during the adhesiverestorative procedures such as the application of different curing strategies, the reduction of polymerization shrinkage by the incremental layering technique, the use of flowable composites, the surface treatment, and the development of new adhesive systems [5][6][7][8][9]. However, these measures have not been able to prevent microleakage completely.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of microleakage in class V composite restorations using dye penetration and micro-CT

et al. 2015

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“…Different studies have shown that these two types of adhesive systems have nearly similar bond strengths (12,34). Some researchers said that 3-monthstorage had no effect on microleakage (35) but some other studies concluded that storage time increases the microleakage in some adhesive systems (36,37).…”

Section: Discussionmentioning

confidence: 99%

The Effect of Silane Content on Microleakage of the Adhesive Systems

Özsevik¹,

Sürmelioğlu²,

Tosun³

et al. 2016

J Int Dent Sci

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Aim: The aim of this study is to compare to microleakage levels of two silane based adhesive systems and one silane free adhesive system. Material and Method: Thirty standardized freshly extracted sound premolar teeth were used in study. Teeth were randomly and divided into three groups of 10 teeth each, according to the adhesive systems (n=20). Class V cavities were prepared (mesio-distal 4 mm, and occluso-gingival 3 mm, and 2 mm depth). After the adhesive systems were applied (Clearfil Universal Bond-silane based, Single Bond Universal-silane based and Adper Single Bond 2-silane free) composite resins (Filtek Z 250) were built up to the cavities. The specimens were aged with 5,000 thermocycles and immersed in 0.5% basic fuchsine solution during 24 hours. Then the samples were sectioned longitudinally in bucco-lingual and mesiodistal directions. The slices were observed under a stereomicroscope (X40 magnification). The scores were statistically analyzed using the Kruskal-Wallis and the Mann Whitney U tests. Results: Significant differences were found in microleakage values among the adhesive systems (p<0.05). The lowest microleakage value was recorded in the Single Bond universal (p<0.05). There were no significant differences in microleakage values among the Clearfil Universal Bond Adper Single Bond 2 (p>0.05). Statistical analysis revealed significant differences between the occlusal and gingival in all restorations (p<0.05). Conclusion: For all groups, microleakage values were higher at gingival margins than at occlusal margins. None of the materials tested in this study completely eliminated microleakage at both the enamel and gingival margin.

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To Compare the Microleakage Among Experimental Adhesives Containing Nanoclay Fillers after the Storages of 24 Hours and 6 Months

Cited by 20 publications

References 24 publications

Effect of different bonding techniques on marginal adaptation of Harmonize composite resin at different storage times.

Effect of different bonding techniques on marginal adaptation of Harmonize composite resin at different storage times.

Evaluation of microleakage in class V composite restorations using dye penetration and micro-CT

The Effect of Silane Content on Microleakage of the Adhesive Systems

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