The effect of long-term storage on the microleakage of composite resin restorations: qualitative and quantitative evaluation

Sadek, Fernanda Tranchesi; Moura, Sandra Kiss; Ballester, Rafael Yagüe; Muench, Antônio; Cardoso, Paulo Eduardo Capel

doi:10.1590/s1517-74912003000300011

Cited by 10 publications

(9 citation statements)

References 11 publications

(47 reference statements)

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“…In a study conducted by Sadek 24 -hour and 3 -month storages had no effect on microleakage of Singe Bond to dentin, while in our research the difference in microleakage after 24 hours and six months was significant and this can be due to different dimensions and cavity form and also storage time in the present study [22]. …”

Section: Discussioncontrasting

confidence: 62%

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

Mousavinasab

Atai²,

Alavi³

2011

TODENTJ

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Objectives: To compare the microleakage among experimental adhesives containing nanoclay fillers after the storages of 24 hours and 6 months. Materials and Methods: Class V cavities were prepared on extracted human molars with the occlusal margins located in enamel and the cervical margins in cementum. Phosphoric acid was applied to the enamel and dentin margins.Subsequently, the cavities were treated using four groups of experimental adhesive systems and restored with a resin composite. Adper Single Bond® was used as control group. After 24- hour and 6- month storages, the samples were subjected to thermocycling shocks and then immersed in silver nitrate as well as developer solution and finally evaluated for leakage. The data were analyzed using SPSS software. Results: Based on Kruskal –Wallis test, significant differences were found between groups regarding microleakage. The Mann- Whitney test showed that Leakage was significantly lower in Adper Single Bond® compared to the other groups in dentinal margins after 24 hours and 6 months and in enamel margins after 6 months. The Wilcoxon Signed Ranks test showed that the enamel leakage in experimental adhesives was significantly lower than dentinal leakage after 24 hours as well as enamel leakage in Adper Single Bond and adhesive with 0.5% PMAA-g-nanoclay was significantly lower than dentinal margins after storage period of 6 months. Conclusion: All the experimental adhesives were effective in reducing enamel leakage after 24 hours, but were not effective in reducing dentinal leakage after 24 hours as well as in enamel and dentinal leakage after a 6-month storage. No improvement was observed in the microleakage in dentin in both short (24 hrs) and long times (6 months).The high microleakage in the adhesives is probably attributed to the high concentration of HEMA in the recipe of the bonding agent.

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Section: Discussioncontrasting

confidence: 62%

“…Sadek assessed the effect of 24-hour and 3-month storages on microleakage. The effect of bonding material on microleakage was significant but storage had no effect on microleakage [22]. On the contrary, storage was effective on shear bond strength but it did not influence the microleakage of the cavities in another study [23].…”

Section: Introductionmentioning

confidence: 99%

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

Mousavinasab

Atai²,

Alavi³

2011

TODENTJ

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“…In this study, there was no signi cant differences at one day and three months storage periods and this could be related to the insu cient time essential for detection any changes in the polymer network and its degradation to occur within the hybrid layer. These results agreed with Sadek et al, (35) who stated that 24 hours and 3 months storage period had no effect on microleakage of Single Bond to dentin. Also, Radovic et al, (36) in their study stated that 3 months storage period was not enough to start SEM showed hybrid layer with short resin tags created by the self-etch adhesive system with few areas of adhesive failure after 3 months storage period.…”

Section: Resultssupporting

confidence: 92%

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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“…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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The effect of long-term storage on the microleakage of composite resin restorations: qualitative and quantitative evaluation

Cited by 10 publications

References 11 publications

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

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

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

The Effect of Silane Content on Microleakage of the Adhesive Systems

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