Effect of PMMA filler particles addition on the physical properties of resin composite

Kondo, Yoshiko; Takagaki, Tomohiro; Okuda, Makoto; Ikeda, Masaomi; Kadoma, Yoshinori; Yamauchi, Junichi; Okada, Koichi; Sadr, Alireza; Nikaido, Toru; Tagami, Junji

doi:10.4012/dmj.2009-141

Cited by 12 publications

(12 citation statements)

References 16 publications

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“…The anti-adherence and bactericidal properties of nano silver-containing composites against mutans streptococci are reported in some previous studies. 5,6,11,16,17 Although nano silver particles might be useful as an antibacterial agent incorporated into dental composites, this metal influences the color of the esthetic restorative materials and reduces water contact angles of the heavily filled composite resins. Therefore, addition of silver nano particles into composite resin restorations may not be clinically advantageous.…”

Section: Discussionmentioning

confidence: 99%

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Addition of silver nanoparticles reduces the wettability of methacrylate and silorane-based composites

Kasraei

Azarsina

2012

Braz. oral res.

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Incorporation of silver nanoparticles into composite resins is recommended for their reported antibacterial properties, but this incorporation can affect the wettability of such materials. Therefore, this study evaluated the effect of nano-silver addition to silorane-based and methacrylate-based composites on their contact angle. Nano-silver particles were added to Z250 (methacrylate-based) and P90 (silorane-based) composites at 0.5% and 1% by weight. The control group had no additions. SEM-EDX analysis was performed to confirm the homogeneity of the nano-silver distribution. Seventy-two composite discs were prepared and standardized to the identical surface roughness values, and then distributed randomly into 6 groups containing 12 samples each (N = 12). Two random samples from each group were observed by atomic force microscopy. Distilled water contact angle measurements were performed for the wettability measurement. Two-way ANOVA, followed by the Tukey-HSD test, with a significance level of 5%, were used for data analysis. It was observed that wettability was significantly different between the composites (p = 0.0001), and that the addition of nano-silver caused a significant reduction in the contact angle (p = 0.0001). Wettability varied depending on the concentration of the nano silver (p = 0.008). Siloranebased composites have a higher contact angle than methacrylate-based composites. Within the limitations of this study, it can be concluded that the addition of 0.5% nano-silver particles to the composites caused a decrease in the contact angle of water.

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Section: Discussionmentioning

confidence: 99%

“…5,6 Silorane-based composites are claimed to have a higher contact angle and a lower amount of plaque adhesion compared to methacrylate-based composites. 7 In operative dentistry, secondary caries is the main reason for restoration replacement.…”

Section: Introductionmentioning

confidence: 99%

Addition of silver nanoparticles reduces the wettability of methacrylate and silorane-based composites

Kasraei

Azarsina

2012

Braz. oral res.

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“…Since there have been no significant advances in improving the properties of polymer matrix materials, recent improvements in resin composite properties are due primarily to advances in filler technology 15) . Generally, particles (random orientation), whiskers (single or multi-layer) and fibers (long or short fibers in various orientations) have been used to reinforce resin composite materials [16][17][18][19] . Fiber-reinforced resin composites have been shown to possess a suitable flexural strength and elastic modulus to function successfully in oral cavities 20) .…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties, volumetric shrinkage and depth of cure of short fiber-reinforced resin composite

Tsujimoto

Barkmeier

Takamizawa

et al. 2016

Dental Materials Journal

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The mechanical properties, volumetric shrinkage and depth of cure of a short fiber-reinforced resin composite (SFRC) were investigated in this study and compared to both a bulk fill resin composite (BFRC) and conventional glass/ceramic-filled resin composite (CGRC). Fracture toughness, flexural properties, volumetric shrinkage and depth of cure of the SFRC, BFRC and CGRC were measured. SFRC had significantly higher fracture toughness than BFRCs and CGRCs. The flexural properties of SFRC were comparable with BFRCs and CGRCs. SFRC showed significantly lower volumetric shrinkage than the other tested resin composites. The depth of cure of the SFRC was similar to BFRCs and higher than CGRCs. The data from this laboratory investigation suggests that SFRC exhibits improvements in fracture toughness, volumetric shrinkage and depth of cure when compared with CGRC, but depth of cure of SFRC was similar to BFRC.

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“…Tjisumoto et al, on the other hand reported that a thin layer of contaminant remains on the zirconia ceramic surface after exposure to saliva, significantly impeding bonding of the resin cement and reducing surface free energy of the ceramics [19]. Likewise, Kondo et al investigated surface properties of PMMA-containing resin composites and reported that contact angle of the experimental materials tended to increase with incorporation of PMMA fillers in the resin composite, thus increasing surface hydrophobicity of the material [29]. According to published literature [19,[28][29][30], materials with contact angle above 65° are considered highly hydrophobic.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of wettability characteristics and adhesion of resin composite to photo-polymerized pulp-capping materials with and without bioactive glass

Tulumbacı

Korkut

Özer

et al. 2019

BDS

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Objective: The purpose of this study was to evaluate mechanical and physical properties of three different light-curable resin-based materials (TheraCal LC, Biner LC, and CalciPlus LC) with or without BAG. Material and Methods: 15 cylindrically shaped specimens (n=5) were prepared for contact angle test. The test values (Θ) were determined with the sessile drop method using three test liquids. 30 acrylic cylindrical blocks were prepared, and holes of (6mmx1mm) were made in the center of the cylinders for shear bond strength test. An adhesive system and a restorative composite material were applied via cylindrically shaped plastic tubes of (2mmx2mm) at the center of the light-curable resin-based material surfaces. The specimens were mounted in a universal testing machine. A crosshead speed of 1 mm/min was applied to each specimen using a knife-edge blade. Results: The highest (74.77°±13.56) and the lowest (35.35°±12.89) contact angle values were recorded for the MB Biner LC group and the CalciPlus LC, respectively. Statistically significant differences observed in contact angle values between the test groups (p<0.05). The surface free energy of Biner LC (γS 36.22) was lower than that of TheraCal LC (γS 44.70) and CalciPlus LC (γS 46.20) (p<0.05). There was no significant difference in shear bond strength values between TheraCal LC and CalciPlus LC (p>0.05). Conclusions: Hydrophilic property of Theracal LC and Calciplus LC resulted in better bonding strength in these materials. The BAG used in Calciplus LC did not adversely affect mechanical and surface properties of the material.

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Effect of PMMA filler particles addition on the physical properties of resin composite

Cited by 12 publications

References 16 publications

Addition of silver nanoparticles reduces the wettability of methacrylate and silorane-based composites

Addition of silver nanoparticles reduces the wettability of methacrylate and silorane-based composites

Mechanical properties, volumetric shrinkage and depth of cure of short fiber-reinforced resin composite

Evaluation of wettability characteristics and adhesion of resin composite to photo-polymerized pulp-capping materials with and without bioactive glass

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