Comparison of Degree of Conversion and Microleakage in Bulkfill Flowable Composite and Conventional Flowable Composite(an in Vitro Study)

Elhawary, Alshaimaa A.; Elkady, Ahmed S.; Kamar, Adel A.

doi:10.21608/adjalexu.2016.58049

Cited by 2 publications

(3 citation statements)

References 21 publications

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“…Different sizes of the filler particles are another variable that could affect the DC of a resin composite. This is attributed to the scattering effect of tiny fillers which reduces the amount of light transmitted through the resin [18]. The commercially available (group 1) had a higher conversion rate than the other groups in this study, which could be due to unique filler combinations and different filler sizes in comparison to the other groups.…”

Section: Discussionmentioning

confidence: 71%

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The Effect of Incorporating Different Concentrations of Octenidine Dihydrochloride on the Degree of Conversion of an Experimental Flowable Resin Composite

Mansour

Hussein

Salem

2021

Open Access Maced J Med Sci

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BACKGROUND: One of the important parameters in assessing the definitive physical, mechanical, and biological characteristics of resin composites is the degree of conversion (DC), as composite qualities have been proven to improve with increasing the DC after photo-polymerization. Besides, fracture or secondary caries are the most common causes of composite resin failure. Accordingly, this reflects the need of formulating dental restorative materials possessing antibacterial activity. AIM: This study was designed to incorporate different concentrations of a new antibacterial agent (Octenidine dihydrochloride [OCT]) into an experimentally formulated flowable resin composite and evaluate its DC. MATERIALS AND METHODS: Four groups were tested in this study; group I was used as the control group, it’s a commercially available flowable composite “Herculite Ultra Flowable”. Group II was an experimental flowable composite with no antibacterial agent. During the preparation of the experimental flowable resin composite material, OCT antibacterial agent was added to the filler in special dark containers at a concentration of 1% wt. and 1.5% wt. respectively, in groups III and IV. The DC was measured and compared to the commercially available resin composite using the Fourier Transform Infrared spectroscopy method. RESULTS: Results of the current study showed that the mean values of DC ranged between (70.37 and 48.7), where Group1 showed the highest mean value, followed by Group 2 than Group 3, Group 4 specimens had the lowest mean value. The data showed that there is a statistically significant difference between all the tested groups. However, the DC was still within the accepted ranges for dental use. CONCLUSION: Based on the results obtained within the experimental conditions of this study it may be stated that the inclusion of the antibacterial OCT 1% and 1.5% wt., into the flowable resin composite showed satisfactory results for the DC as it met the ADA requirements for clinical use.

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Section: Discussionmentioning

confidence: 71%

“…Based on these considerations the FTIR was the method of choice in this study as it is the simplest and most reliable technique [17]. FTIR detects the amount of unreacted C = C in the resin matrix and C = C stretching vibrations directly before and after curing of resin composite to determine changes in mechanical performance [18].…”

Section: Discussionmentioning

confidence: 99%

The Effect of Incorporating Different Concentrations of Octenidine Dihydrochloride on the Degree of Conversion of an Experimental Flowable Resin Composite

Mansour

Hussein

Salem

2021

Open Access Maced J Med Sci

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“…Previous authors compared microleakage of flowable bulk-fill composite resins with that of conventional composite resins and reported less microleakage with the use of flowable bulk-fill composite resins, which was attributed to higher degree of conversion of flowable bulk-fill composite resins compared to conventional composite resins [24]. In addition, two separate studies showed proper performance of Tetric N-Ceram Bulk Fill composite resin in relation to microleakage [25,26].…”

Section: Discussionmentioning

confidence: 99%

Influence of Cavity Dimensions on Microleakage of Two Bulk-Fill Composite Resins

Naghili¹,

Yousefi

Zajkani³

et al. 2019

Pesqui. bras. odontopediatria clín. integr.

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Objective: To evaluate the effect of cavity dimensions on the amount of microleakage in two different types of bulk-fill composite resins. Material and Methods: Forty class II cavities were prepared in the mesial and distal surfaces of human molars without any carious lesions. The samples were divided into 4 groups (n=10): Group 1: cavities with 3 mm of buccolingual width (known as the smaller cavity), filled with Tetric N-Ceram Bulk Fill composite resin; Group 2: cavities with 6 mm of buccolingual width (larger cavity), filled with Tetric N-Ceram Bulk Fill composite resin; Group 3: cavities with 3 mm of buccolingual width, filled with X-Tra Base composite resin; and Group 4: cavities with 6 mm of buccolingual width, filled with X-Tra Base composite. After the specimens were thermocycled for 500 cycles at 5/55°C, they were immersed in 1% methylene blue for 24 hours, and then cut into sections mesiodistally in the longitudinal axis of each tooth. Then, the samples were scored regarding the amount of dye penetration in two occlusal and gingival areas under a stereomicroscope (x32). Data was submitted to Kruskal-Wallis and Mann-Whitney tests. Results: The highest degrees of microleakage in larger cavities filled with X-Tra Base among the four groups. There was a significant statistic difference (p=0.012) between large and small cavities filled with X-Tra Base (Groups 3 and 4); however, there was no significant difference between the two cavity sizes of Tetric N-Ceram Bulk-filled groups. Conclusion: Microleakage of composite resins depends on the dimension of the cavity and the type of composite resin used.

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Comparison of Degree of Conversion and Microleakage in Bulkfill Flowable Composite and Conventional Flowable Composite(an in Vitro Study)

Cited by 2 publications

References 21 publications

The Effect of Incorporating Different Concentrations of Octenidine Dihydrochloride on the Degree of Conversion of an Experimental Flowable Resin Composite

The Effect of Incorporating Different Concentrations of Octenidine Dihydrochloride on the Degree of Conversion of an Experimental Flowable Resin Composite

Influence of Cavity Dimensions on Microleakage of Two Bulk-Fill Composite Resins

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