scholarly journals Depth of Cure of Dental Resin Composites: ISO 4049 Depth and Microhardness of Types of Materials and Shades

2008 ◽  
Vol 33 (4) ◽  
pp. 408-412 ◽  
Author(s):  
B. K. Moore ◽  
J. A. Platt ◽  
G. Borges ◽  
T-M. G. Chu ◽  
I. Katsilieri
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Resin Composites ◽  
Dental Resin ◽  
Degree Of Cure ◽  
Depth Of Cure ◽  
Dental Resin Composites ◽  
High Degree

Clinical Relevance Achieving a high degree of cure throughout a 2 mm thickness of light-activated resin composite did not occur for many types and shades of resin composite. Clinicians should check the depth of cure by using the scraping method.

Dental Resin Composites with Enhanced Properties Bycommercial Silica Particles as Fillers

2015 ◽  
Vol 815 ◽  
pp. 336-341
Author(s):  
Shuang Bao ◽  
Rui Li Wang ◽  
Bin Sun ◽  
Xiao Ze Jiang ◽  
Mei Fang Zhu
Keyword(s):  
Mechanical Properties ◽  
Resin Composite ◽  
Flexural Modulus ◽  
Silica Particles ◽  
Component Ratio ◽  
Resin Composites ◽  
Dental Resin ◽  
Depth Of Cure ◽  
Dental Resin Composites ◽  
Enhanced Properties

To explore the preparation of novel dental resin composites with enhanced properties, two commercial silica particles with sizes of around 1μm and 40 nm were chosen as inorganic fillers, and firstly surface functionalized by 3-methacryloxypropyltrimethoxysilane (γ-MPS) to incorporate cross-linkable vinyl groups onto the surface of fillers. Then the modified fillers were blended with organic monomers, bisphenolAdiglycidyldimethacrylate (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA), to fabricate the resin compositeswith a three-roll mixer.Resin composites with various weight percentage of fillers and component ratio of microparticle and nanoparticle were prepared. Surface functionalization of silica particles was characterized by fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), and mechanical properties degree of conversion, and depth of cure of the resultant resin composites were investigated byuniversal testing machineand FTIR. The results indicated that surface modification of silica particles was successful and the surface organic contents were 3.29% and 4.34%, respectively. Among the studied resin composites, the resin composite with 75 wt.% silica particles (59 wt.% microparticles and 16 wt.% nanoparticles) presented the highest value of depth of cure (5.52 ± 0.07 mm), and optimum mechanical properties such as flexural strength (149.8 ± 3.3 MPa), flexural modulus (13.8 ± 0.06 GPa), compressive strength (340.6 ± 8.3 MPa) and Vicker’smicrohardness (78.26 ± 2.45 HV). The study of dental resin composites fabricated from commercial silica particles with excellent properties might provide a new sight for realizing the preparation of this kind of dental resin composites in an industrial scale.

scholarly journals Thiourethane filler functionalization for dental resin composites: Concentration-dependent effects on toughening, stress reduction and depth of cure

2021 ◽  
Vol 118 ◽  
pp. 111535
Author(s):  
M. Goulart ◽  
A.P. Fugolin ◽  
S.H. Lewis ◽  
J.A. Rodrigues ◽  
M.C. Erhardt ◽  
...  
Keyword(s):  
Stress Reduction ◽  
Resin Composites ◽  
Dental Resin ◽  
Depth Of Cure ◽  
Dental Resin Composites

scholarly journals Effect of Low Shrinkage Monomers on Physicochemical Properties of Dental Resin Composites

2015 ◽  
Vol 26 (3) ◽  
pp. 272-276 ◽  
Author(s):  
Dayane Carvalho Ramos Salles de Oliveira ◽  
Karla Rovaris ◽  
Viviane Hass ◽  
Eduardo José Souza-Júnior ◽  
Francisco Haiter-Neto ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Physicochemical Properties ◽  
Statistical Difference ◽  
Resin Composite ◽  
Multiple Comparisons ◽  
Resin Composites ◽  
Dental Resin ◽  
Tukey Test ◽  
Dental Resin Composites ◽  
One Way Anova

The aim of this study was to evaluate the effect of low shrinkage monomers on physicochemical properties of dental resin composites. Two low shrinkage resin composites: one with a crosslink branching monomer (Kalore, GC Corp) and a novel monomer (Venus Diamond, Heraeus Kulzer) were compared to a conventional resin composite formulation (Filtek Z250, 3M/ESPE). The volumetric shrinkage was evaluated by µCT analysis (n=5) and the physicochemical properties by degree of C=C conversion (DC), flexural strength (FS) and Young's modulus (YM) (n=10). All samples were light cured by a LED device (Radii, SDI) with 16 J/cm2. The results were analysed by one-way ANOVA and Tukey test for multiple comparisons (α=0.05). No statistical difference was found between µCT shrinkage values to Kalore (1.8%) and Venus Diamond (1.7%) (p≥0.05); Z250 presented statistical highest shrinkage value (2.0%). Kalore presented higher statistical DC (60.8%) than Venus Diamond (49.5%) and Z250 (49.6%). No statistical difference was found between FS or YM properties to Venus Diamond and Z250; Kalore presented statistical lowest FS and YM properties (p≥0.05). Conclusion: Using novel monomers seem to reduce polymerization shrinkage without affecting the physicochemical properties evaluated of resin composites rather than using crosslink branching monomers.

Simulated Body Fluid Sorption and Solubility of Silica Reinforced Dental Resin Composites

2013 ◽  
Vol 795 ◽  
pp. 626-630 ◽  
Author(s):  
Saad Omar Alsharif ◽  
Md Akil Hazizan ◽  
Nasser Abbas Abd El-Aziz ◽  
Zainal Arifin Ahmad
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Resin Composite ◽  
Triethylene Glycol ◽  
Filler Loading ◽  
Resin Matrix ◽  
Resin Composites ◽  
Dental Resin ◽  
Triethylene Glycol Dimethacrylate ◽  
Dental Resin Composites

The aim of this study is to investigate the effect of filler loading on the sorption and solubility of Simulated Body Fluid (SBF) of self-prepared micro dental resin composites. The prepared resin composite was based on silica (SiO2) particles and bisphenol-a-glycidyl methacrylate (Bis-GMA) as a base monomer and triethylene glycol dimethacrylate (TEGDMA) as a co-monomer. The filler was mixed with monomers, in proportions of 40, 50 and 60 wt.%. A resin matrix containing 0 wt.% filler was used as the control composition to evaluate the effect of filler loading on the sorption and solubility of SBF. The experimental methods were based on the procedure mentioned in the ISO 4049 (2009) standard for dentistry-Polymer-based restorative Materials. The sorption and solubility of resin matrix/SiO2composite decreased gradually as the filler loading increased. The increase of filler loading showed significant differences in the sorption and solubility as tested by ANOVA (P= 0.000).

scholarly journals Development of Chlorhexidine Loaded Halloysite Nanotube Based Experimental Resin Composite with Enhanced Physico-Mechanical and Biological Properties for Dental Applications

2020 ◽  
Vol 4 (2) ◽  
pp. 81 ◽  
Author(s):  
Tejas Barot ◽  
Deepak Rawtani ◽  
Pratik Kulkarni
Keyword(s):  
Mechanical Properties ◽  
Resin Composite ◽  
Biological Properties ◽  
Degree Of Conversion ◽  
Dental Composites ◽  
Resin Composites ◽  
Dental Resin ◽  
Dental Resin Composites ◽  
Mass Fractions ◽  
Nih 3T3

Objective: The objective of this study was to explore the effect of Chlorhexidine-loaded Halloysite nanotubes (HNT/CHX) fillers (diverse mass fractions from 1 to 10 wt.%) on physicochemical, morphological and biological properties of newly developed experimental dental resin composite, in order to compare with the properties of composites composed of conventional glass fillers. Methods: The dental resin composites were prepared by incorporating various proportions of HNT/CHX. Six different groups of specimens: control group and five groups composed of varied mass fractions of HNT/CHX (e.g., 1.0, 2.5, 5.0, 7.5 and 10 wt.%) as fillers in each group were fabricated. Mechanical properties of the composites were monitored, using UTM. The degree of conversion of dental resin composites and their depth of cure were also evaluated. Antimicrobial properties of dental composites were studied in vitro by applying agar diffusion test on strain Streptococcus mutans and cytotoxicity were studied using NIH-3T3 cell line. Results: The incorporation of varied mass fractions (1.0 to 5.0 wt.%) of HNT/CHX in dental resins composites enhanced mechanical properties considerably with significant antibacterial activity. The slight decrease in curing depth and degree of conversion values of composites indicates its durability. No cytotoxicity was noticed on NIH-3T3 cell lines. Significance: Consistent distribution of HNT/CHX as a filler into dental composites could substantially improve not only mechanical properties but also biological properties of dental composites.

Effect of resin chemistry on depth of cure and cytotoxicity of dental resin composites

2014 ◽  
Vol 181 ◽  
pp. 33-38 ◽  
Author(s):  
V. Susila Anand ◽  
Venkatesh Balasubramanian
Keyword(s):  
Resin Composites ◽  
Dental Resin ◽  
Depth Of Cure ◽  
Dental Resin Composites

The Effect of Curing Light Type and Intensity on the Depth of Cure of Dental Resin Composites

Dental News ◽  
2012 ◽  
Vol 19 (4) ◽  
pp. 40-50
Author(s):  
Hashem M. Ridha ◽  
Hadi A. Al-Bahrani ◽  
Abdulaziz H. Aljazzaf
Keyword(s):  
Resin Composites ◽  
Dental Resin ◽  
Depth Of Cure ◽  
Dental Resin Composites ◽  
Curing Light

Post-cure depth of cure of bulk fill dental resin-composites

2014 ◽  
Vol 30 (2) ◽  
pp. 149-154 ◽  
Author(s):  
A. Alrahlah ◽  
N. Silikas ◽  
D.C. Watts
Keyword(s):  
Resin Composites ◽  
Dental Resin ◽  
Depth Of Cure ◽  
Dental Resin Composites

scholarly journals Application of Antimicrobial Polymers in the Development of Dental Resin Composite

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4738
Author(s):  
Jing Xue ◽  
Jing Wang ◽  
Daoshuo Feng ◽  
Haofei Huang ◽  
Ming Wang
Keyword(s):  
Mechanical Properties ◽  
Resin Composite ◽  
Antimicrobial Properties ◽  
Resin Composites ◽  
Dental Resin ◽  
Antimicrobial Polymers ◽  
Chemical Structures ◽  
Dental Restorations ◽  
Dental Resin Composites ◽  
Antimicrobial Effectiveness

Dental resin composites have been widely used in a variety of direct and indirect dental restorations due to their aesthetic properties compared to amalgams and similar metals. Despite the fact that dental resin composites can contribute similar mechanical properties, they are more likely to have microbial accumulations leading to secondary caries. Therefore, the effective and long-lasting antimicrobial properties of dental resin composites are of great significance to their clinical applications. The approaches of ascribing antimicrobial properties to the resin composites may be divided into two types: The filler-type and the resin-type. In this review, the resin-type approaches were highlighted. Focusing on the antimicrobial polymers used in dental resin composites, their chemical structures, mechanical properties, antimicrobial effectiveness, releasing profile, and biocompatibility were included, and challenges, as well as future perspectives, were also discussed.

Effect of light intensity and water aging on surface hardness of dental resin-composites

2019 ◽  
Vol 64 (11) ◽  
pp. 1007-1014
Author(s):  
Tong XU ◽  
◽  
Jia-Hui ZHANG ◽  
Zhao-Ying LIU ◽  
Xuan LI ◽  
...  
Keyword(s):  
Light Intensity ◽  
Surface Hardness ◽  
Resin Composites ◽  
Dental Resin ◽  
Dental Resin Composites ◽  
Effect Of Light
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