A dental filling composite resin restorative with improved antibacterial function and hardness

2020 ◽  
Vol 55 (2) ◽  
pp. 159-168
Author(s):  
Gulsah Caneli ◽  
Yong Chen ◽  
Na Sungsoo ◽  
Gregory G Anderson ◽  
Dong Xie
Keyword(s):  
Particle Size ◽  
Antibacterial Activity ◽  
Composite Resin ◽  
Filler Content ◽  
Negative Impact ◽  
Surface Hardness ◽  
Filler Loading ◽  
Composite Resins ◽  
Dental Composite ◽  
Almost All

A novel antimicrobial dental composite resin has been developed and evaluated. Alumina filler particles were covalently coated with an antibacterial resin and blended into a composite resin formulation. Surface hardness and bacterial viability were used to evaluate the modified composite resin. Results showed that almost all the modified composite resins exhibited higher antibacterial activity along with improved surface hardness, as compared to unmodified one. Effects of antibacterial moiety content on the modified fillers, modified alumina particle size and loading, and total filler content were investigated. It was found that increasing antibacterial moiety content, particle size and loading of the modified filler, and total filler content generally increased surface hardness. Increasing antibacterial moiety, filler loading and total filler content increased antibacterial activity. On the other hand, increasing particle size showed a negative impact on antibacterial activity. The leaching tests indicate that the modified experimental composite resin showed no leachable antibacterial component to bacteria and 3T3 mouse fibroblasts.

The filler content of the dental composite resins and their influence on different properties

2011 ◽  
Vol 75 (6) ◽  
pp. 758-765 ◽  
Author(s):  
Alessandra N.S. Rastelli ◽  
Denis P. Jacomassi ◽  
Ana Paula S. Faloni ◽  
Thallita P. Queiroz ◽  
Seila S. Rojas ◽  
...  
Keyword(s):  
Filler Content ◽  
Composite Resins ◽  
Dental Composite ◽  
Dental Composite Resins

scholarly journals Wear Characteristics of Dental Ceramic CAD/CAM Materials Opposing Various Dental Composite Resins

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1839 ◽  
Author(s):  
Bora Gwon ◽  
Eun-Bin Bae ◽  
Jin-Ju Lee ◽  
Won-Tak Cho ◽  
Hyun-Young Bae ◽  
...  
Keyword(s):  
Weight Loss ◽  
Composite Resin ◽  
Lithium Disilicate ◽  
Composite Resins ◽  
Dental Composite ◽  
Dental Ceramics ◽  
Wear Properties ◽  
Dental Ceramic ◽  
Dental Composite Resins ◽  
Cad Cam

The aim of this study was to evaluate the wear properties of opposed dental ceramic restorative CAD/CAM materials and several posterior direct restorative composite resins. Three kinds of dental ceramics CAD/CAM materials (monolithic zirconia, lithium disilicate, leucite) and four dental composite resins—that is, MI Gracefil, Gradia Direct P, Estelite Σ Quick, and Filtek Supreme Ultra—were used in this study. For each of the 12 groups (three ceramics × four composite resins), five each of a canine-shaped ceramic specimen and a cuboidal shape opposing composite resin were prepared. All of the specimens were tested in a thermomechanical loading machine (50 N, 100,000 cycles, 5/55 °C). Wear losses of ceramic specimens and composite resin specimens were evaluated using a three-dimensional profiling system and an electronic scale, respectively. Statistical analyses were performed using the Kruskal–Wallis test and Mann–Whitney U test with Bonferroni’s correction. Zirconia showed significantly less volumetric loss than lithium disilicate or leucite regardless of composite resin type (p > 0.05/3 = 0.017), and that Estelite Σ Quick showed significantly more weight loss than Filtek Supreme Ultra, MI Gracefil, or Gradia Direct P regardless of ceramic type (p > 0.05/6 = 0.083). Zirconia showed less volumetric loss than lithium disilicate or leucite. Some composite resins opposing ceramics showed considerable weight loss.

scholarly journals THE EFFECT OF Musa acuminata AND Ocimum basilicum MIXED EXTRACTS TO THE SURFACE HARDNESS OF BIOACTIVE COMPOSITE RESIN

2020 ◽  
Vol 5 (2) ◽  
pp. 172
Author(s):  
Dewi Puspitasari ◽  
Maharani Laillyza Apriasari ◽  
Dewi Rahayu ◽  
Priyawan Rachmadi
Keyword(s):  
Mechanical Properties ◽  
Composite Resin ◽  
Surface Hardness ◽  
Ocimum Basilicum ◽  
Musa Acuminata ◽  
Dental Restoration ◽  
Composite Resins ◽  
Mixed Solution ◽  
Leaf Extracts ◽  
Banana Stem

ABSTRACTBackgrounds: The use of mouthwash daily may influence the mechanical properties of bioactive composite resin as a dental restoration, one of the mechanical properties is surface hardness. Herbal mouthwash can be used to minimize the side effect of mouthwash that contain alcohol. Mauli banana stem and basil leaf extracts can be produced into herbal mouthwash. Methods: Thirty specimens (10mm diameter x 2mm thick; n=5/group) bioactive composite resins were immersed in a mixed solution of Mauli banana and basil leaf extracts with concentration of 25%, 50%, 75 %%, 100%, the control group of chlorhexidine gluconate 0.2% and aquadest for 7 days in 37oC. Measurement of the surface hardness was using the Vickers Microhardness Tester with 100 gf load for 15 seconds. Results: One Way ANOVA and Post Hoc Bonferroni exhibited the significant differences (p <0.05) in hardness values between the specimens that immersed in the mixed solution Mauli banana and Basil leaf extracts, which in the concentration of 100% (4,49 ± 4,61 VHN) compared with 25% (38,20 ± 2,58 VHN), 50% (41,40 ± 3,84 VHN) and 75% concentration (40,40 ± 3,55 VHN). There was no siginificant difference (p >0.05) between specimens immersed in CHX, aquadest and the mixed solution of mauli banana and basil leaf extracts in all concentration. Conclusion: There is no change in bioactive composite resin surface hardness after immersed in the mixed solution of Mauli Banana stem (Musa acuminata) and Basil leaf (Ocimum basilicum) extracts.Keywords: Basil leaf extract, Bioactive resin, Mauli Banana stem extract, Surface hardness

The Effect of LZB-GC Antibacterial Agent on Mechanics and Friction Properties of Dental Composite Resin

2013 ◽  
Vol 791-793 ◽  
pp. 299-302
Author(s):  
Xiao Qiang Che ◽  
Song Ying Zhang ◽  
Yun Ping Chen ◽  
Bin Liu
Keyword(s):  
Friction Coefficient ◽  
Flexural Strength ◽  
Antibacterial Agent ◽  
Composite Resin ◽  
Surface Hardness ◽  
Dental Composite ◽  
Ultrasonic Methods ◽  
Dental Composite Resin

The antibacterial agent (LZB-GC) was added to composite resin materials with varied ratio (0.5%, 1%, 1.5%, and 2%) by mechanical and ultrasonic methods. The effects of different contents of the antibacterial agent on the mechanical and fibration properties of the composite resin were measured. The results showed 1.5% group acquired the best flexural strength, and the surface hardness decreased while the friction coefficient increased with improving the antibacterial agent content.

scholarly journals Bisphenol A Release: Survey of the Composition of Dental Composite Resins

2016 ◽  
Vol 10 (1) ◽  
pp. 446-453 ◽  
Author(s):  
Elisabeth Dursun ◽  
Hélène Fron-Chabouis ◽  
Jean-Pierre Attal ◽  
Anne Raskin
Keyword(s):  
Bisphenol A ◽  
Endocrine Disruptor ◽  
Composite Resin ◽  
Safety Data ◽  
Composite Resins ◽  
Dental Composite ◽  
Potential Toxicity ◽  
Dental Composite Resins ◽  
Material Safety Data Sheets ◽  
Exhaustive List

Background: Bisphenol A (BPA) is an endocrine disruptor with potential toxicity. Composite resins may not contain pure BPA, but its derivatives are widely used. Several studies found doses of BPA or its derivatives in saliva or urine of patients after composite resin placement. Objective: The aims of this study were to establish an exhaustive list of composite resins marketed in Europe and their composition, and to assess the extent of BPA derivatives used. Methods: A research on manufacturers' websites was performed to reference all composite resins marketed in Europe, then their composition was determined from both material safety data sheets and a standardized questionnaire sent to manufacturers. Manufacturers had to indicate whether their product contained the monomers listed, add other monomers if necessary, or indicate “not disclosed”. Results: 160 composite resins were identified from 31 manufacturers and 23 manufacturers (74.2%) responded to the survey. From the survey and websites, the composition of 130 composite resins (81.2%) was: 112 (86.2%) based on BPA derivatives, 97 (74.7%) on bis-GMA, 17 (13.1%) without monomer derived from BPA (UDMA, sometimes with TEGDMA) and 6 (4.6%) with UDMA (only); 1 (0.8%) did not contain a BPA derivative or UDMA or TEGDMA. Pure BPA was never reported. Conclusion: This work has established a list of 18 composite resins that contain no BPA derivative. Manufacturers should be required to report the exact composition of their products as it often remains unclear or incomplete.

scholarly journals Relationship between Color and Translucency of Multishaded Dental Composite Resins

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Homan Naeimi Akbar ◽  
Keyvan Moharamzadeh ◽  
Duncan J. Wood ◽  
Richard Van Noort
Keyword(s):  
Statistical Analysis ◽  
Composite Resin ◽  
Composite Resins ◽  
Dental Composite ◽  
Dental Composite Resins ◽  
Regular Body

The aim of the present study was to compare the translucency of different shades of two highly aesthetic multilayered restorative composite resins. In total nine shades from Esthet.X and ten shades from Filtek Supreme composite resins were chosen. Discs of each shade were prepared (N=3) and light-cured. Total and diffuse transmittance values for each sample were measured. Statistical analysis showed that the opaque dentine shades of both composites were the least translucent and the enamel shades had the highest translucency. There was a significant decrease in translucency from A2 to C2 of regular body shades and also from A4 to C4 of opaque dentine shades of Esthet.X composite resin. Grey enamel shade had a significantly higher diffuse translucency compared to clear and yellow enamel shades. There was a significant decrease in translucency from A2B to D2B and also in diffuse translucency from A4D to C6D shades of Filtek Supreme composite resin. It can be concluded that the color of the composite resins tested in this study had a significant effect on their translucency. Information on the translucency of different shades of composite resins can be very useful for the clinicians in achieving optimal esthetic restorative outcome.

scholarly journals Investigation of Water Absorption and Color Change of Indirect Composite Resins

2021 ◽  
Author(s):  
Nur İskender ◽  
Bilge Ersöz ◽  
Numan Aydın ◽  
Serpil Karaoğlanoğlu ◽  
Elif Aybala Oktay
Keyword(s):  
Particle Size ◽  
Water Absorption ◽  
Composite Resin ◽  
Color Change ◽  
Composite Resins ◽  
Tissue Loss ◽  
Absorption Data ◽  
Color Changes ◽  
Indirect Composites ◽  
Indirect Composite

Purpose:Since conventional composite resins have some disadvantages such as polymerization shrinkage and secondarycaries formation, indirect restorations are preferred in cases where tooth tissue loss is high. The aim of this study is toexamine the water absorption and color change of indirect composite resins in different beverages.Materials & Methods:In the study, 40 specimens (10×2 mm) were arranged from each composite using three indirect(Signum Composite, Signum Ceramis and Gradia Plus) and one conventional (GrandioSO) composite resin. After thespecimens were polished, they were used for water absorption and color change test. The water absorption test wasperformed through keeping them in water for 7 days as specified in ISO 4049:2009. Samples were kept in coffee, tea anddistilled water for 7 days in order to examine color differences. The water absorption and color change values of thecomposite resins at the end of the 7th day were appraised using one-way analysis of variance (ANOVA) and Tukey’s test(p<0.05).Results:While there was no statistically considerable difference between the water absorption data of the indirect andtraditional composite resin materials we used in the study (p>0.05). When the color changes of resin-containingcomposites in water, coffee and tea were examined, traditional composite resin (GrandioSO) showed statistically lesscolor change than indirect composites in water, coffee and tea (p<0.05).Conclusion:Although indirect composite resins showed similar water absorption with conventional composite, theyshowed more color change than conventional composite. The highest color change in indirect composites was seen incoffee solution. Particle size of the indirect composites do not affect water absorption, but the decrease in particle size ofcomposites shows less color change.

scholarly journals Evaluation of Light Curing Distance and Mylar Strips Color on Surface Hardness of Two Different Dental Composite Resins

2014 ◽  
Vol 8 (1) ◽  
pp. 144-147 ◽  
Author(s):  
Seyed Mostafa Mousavinasab ◽  
Mehrdad Barekatain ◽  
Elahe Sadeghi ◽  
Farzaneh Nourbakhshian ◽  
Amin Davoudi
Keyword(s):  
Dental Materials ◽  
Surface Hardness ◽  
Hardness Test ◽  
Composite Resins ◽  
Dental Composite ◽  
Test Machine ◽  
Dental Composite Resins ◽  
Light Curing ◽  
Spss Software ◽  
Temperature Surface

Introduction:Hardness is one of the basic properties of dental materials, specially composite resins which is relevant to their polymerization. The aim of this study was to evaluate the effect of light curing distance and the color of clear Mylar strips on surface hardness of Silorane-based (SCR) and Methacrylate-based composite resins (MCR).Materials and methods:40 samples of MCRs (Filtek Z250) and SCRs (Filtek P90) were prepared in size of 5 mm×2 mm (80 samples in total). The samples divided into 8 groups (10 samples in each one) based on the color of clear Mylar strips (white or blue) and distance from light curing source (0 mm or 2 mm). All the samples cured for 40 second and stored in incubator for 24 hours in 37°C temperature. Surface hardness test was done by Vickers test machine and the collected data were analyzed by one-way ANOVA and paired T-test by using SPSS software version 13 at significant level of 0.05.Results:MCRs cured with blue Mylar strips from 0 mm distance had the highest (114.5 kg/mm2) and SCRs cured with white Mylar strips from 2 mm distance had the lowest (42.2 kg/mm2) mean of surface hardness. Also, the results of comparison among SCRs and MCRs showed significant differences among all groups (all P values <0.01).Conclusion:The hardness decreased as the distance increased and the blue Mylar strips provided higher hardness than clear ones. Also, Filtek Z250 showed higher hardness compared to Filtek P90.

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