Surface Roughness of Novel Resin Composites Polished with One-step Systems

10.2341/06-56 ◽  
2007 ◽  
Vol 32 (2) ◽  
pp. 185-192 ◽  
Author(s):  
Z. Ergücü ◽  
L. S. Türkün
Keyword(s):  
Surface Roughness ◽  
Material Properties ◽  
Clinical Relevance ◽  
Resin Composites ◽  
One Step ◽  
Reduced Time

Clinical Relevance One-step systems can polish resin composites containing nanoparticles with a reduced time application; however, their effectiveness depends on material properties.

scholarly journals Comparison of One-Step and Multistep Polishing Systems for the Surface Roughness of Resin Composites

2016 ◽  
Vol 06 (03) ◽  
pp. 73-80
Author(s):  
Ismail Hakkı Baltacıoğlu ◽  
Ozgur Irmak ◽  
Nuran Ulusoy ◽  
Esra Cengiz ◽  
Yıldırım Hakan Bağış
Keyword(s):  
Surface Roughness ◽  
Resin Composites ◽  
One Step

Effect of Polishing Techniques and Time on Surface Roughness, Hardness and Microleakage of Resin Composite Restorations

2006 ◽  
Vol 31 (1) ◽  
pp. 11-17 ◽  
Author(s):  
D. Venturini ◽  
M. S. Cenci ◽  
F. F. Demarco ◽  
G. B. Camacho ◽  
J. M. Powers
Keyword(s):  
Surface Roughness ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Negative Influence ◽  
Resin Composites ◽  
Composite Restorations

Clinical Relevance The effects of polishing techniques on surface roughness, microhardness and microleakage of resin composites are material dependent. In general, since immediate polishing has not had a negative influence on the tested properties of the two composites compared to delayed polishing, this procedure could be preferred, reducing the number of clinic sessions and bringing more comfort and satisfaction to the patient.

scholarly journals The effect of one-step and multi-step polishing systems on the surface roughness and microhardness of novel resin composites

2012 ◽  
Vol 06 (02) ◽  
pp. 198-205 ◽  
Author(s):  
Ugur Erdemir ◽  
Hande Sar Sancakli ◽  
Esra Yildiz
Keyword(s):  
Surface Roughness ◽  
Resin Composite ◽  
In Vitro Study ◽  
Resin Composites ◽  
Significance Level ◽  
Significant Difference ◽  
One Step ◽  
Wet Ground ◽  
Post Hoc

ABSTRACTObjectives: The objective of this in vitro study was to evaluate the surface roughness and microhardness of three novel resin composites containing nanoparticles after polishing with one-step and conventional multi-step polishing systems.Methods: A total of 126 specimens (10 X 2 mm) were prepared in a metal mold using three nanocomposites (Filtek Supreme XT, Ceram-X, and Grandio), 21 specimens of each resin composite for both tests (n=63 for each test). Following light curing, seven specimens from each group received no polishing treatment and served as controls for both tests. The specimens were randomly polished using PoGo and Sof-Lex systems for 30 seconds after being wet-ground with 1200-grit silicon carbide paper. The mean surface roughness of each polished specimen was determined with a profilometer. The microhardness was determined using a Vickers hardness measuring instrument with a 200-g load and 15 seconds dwell time. The data were analyzed using the Kruskal-Wallis test and the post hoc Dunn's multiple comparison tests at a significance level of .05.Results: Among all materials, the smoothest surfaces were obtained under a matrix strip (control) (P<.05). There were no statistically significant differences among polishing systems in the resin composites for surface roughness (P>.05). The lowest hardness values for the three resin composites were obtained with a matrix strip, and there was a statistically significant difference compared with other polishing systems (P<.05) whereas no statistically significant differences were observed between the polishing systems (P<.05).Conclusion: The current one-step polishing system appears to be as effective as multi-step systems and may be preferable for polishing resin composite restorations. (Eur J Dent 2012;6:198-205)

The Influence of One-step Polishing Systems on the Surface Roughness and Microhardness of Nanocomposites

10.2341/07-28 ◽  
2008 ◽  
Vol 33 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Y. Korkmaz ◽  
E. Ozel ◽  
N. Attar ◽  
G. Aksoy
Keyword(s):  
Surface Roughness ◽  
Clinical Relevance ◽  
Good Choice ◽  
One Step ◽  
Polishing Procedures

Clinical Relevance One-step polishing systems exhibited similar or better surface roughness values when compared to multi-step polishing systems. In all groups, mylar-strip created surfaces showed lower microhardness values than polished surfaces. Different polishing procedures did not effect the microhardness of nanocomposites. One-step polishing systems may be a good choice for polishing nanocomposites, resulting in reduced chair time.

scholarly journals The Effects of Toothbrush Wear on the Surface Roughness and Gloss of Resin Composites with Various Types of Matrices

2021 ◽  
Vol 9 (1) ◽  
pp. 8
Author(s):  
Murtadha AlAli ◽  
Nikolaos Silikas ◽  
Julian Satterthwaite
Keyword(s):  
Surface Roughness ◽  
Pairwise Comparisons ◽  
Resin Composites ◽  
Hybrid Resin ◽  
Before And After ◽  
Post Hoc ◽  
Main Effects ◽  
Toothbrush Wear

Objective: To evaluate and compare the surface roughness and gloss of a DMA-free composite and Bis-GMA-free composite with a DMA-based composite before and after toothbrushing simulation. Materials and Methods: Fifteen dimensionally standardised composite specimens of three nano-hybrid resin composites (Tetric EvoCeram, Admira Fusion, and Venus Diamond) were used. Five specimens from each composite were polished and then subjected to a toothbrushing simulator. Surface roughness (Ra) and gloss were measured before toothbrushing and after 5000, 10,000, 15,000, and 20,000 toothbrushing cycles. The data was analysed using 5 × 3 ANOVA to assess surface roughness and gloss values and pairwise comparisons in the form of Tukey post hoc tests were performed to interpret main effects. Results: For all tested materials, surface roughness increased, and gloss decreased after toothbrushing abrasion. Surface roughness (Ra) values ranged from 0.14 to 0.22 μm at baseline and increased to between 0.41 and 0.49 μm after 20,000 toothbrushing cycles. Gloss values ranged between 31.9 and 50.6 GU at baseline and between 5.1 and 19.5 GU after 20,000 toothbrushing cycles. The lowest initial Ra value was detected in Venus Diamond and the highest initial gloss value was detected in Tetric EvoCeram. Conclusions: Simulated toothbrushing abrasion led to an increase in surface roughness and a decrease in gloss for all tested materials. Venus Diamond had the smoothest surface and Tetric EvoCeram had the glossiest surface after polishing and following 20,000 cycles of toothbrushing abrasion. Admira Fusion demonstrated the roughest surface and had the lowest gloss values before and after toothbrushing abrasion.

The effect of various dentifrices on surface roughness and gloss of resin composites

2010 ◽  
Vol 38 ◽  
pp. e123-e128 ◽  
Author(s):  
Juliana da Costa ◽  
Anne Adams-Belusko ◽  
Kelly Riley ◽  
Jack L. Ferracane
Keyword(s):  
Surface Roughness ◽  
Resin Composites

scholarly journals Dense, Strong, and Precise Silicon Nitride-Based Ceramic Parts by Lithography-Based Ceramic Manufacturing

2020 ◽  
Vol 10 (3) ◽  
pp. 996 ◽  
Author(s):  
Altan Alpay Altun ◽  
Thomas Prochaska ◽  
Thomas Konegger ◽  
Martin Schwentenwein
Keyword(s):  
Surface Roughness ◽  
High Temperature ◽  
Light Scattering ◽  
Silicon Nitride ◽  
Material Properties ◽  
Refractive Indices ◽  
High Relative Density ◽  
Ceramic Manufacturing ◽  
High Level ◽  
First Time

Due to the high level of light absorption and light scattering of dark colored powders connected with the high refractive indices of ceramic particles, the majority of ceramics studied via stereolithography (SLA) have been light in color, including ceramics such as alumina, zirconia and tricalcium phosphate. This article focuses on a lithography-based ceramic manufacturing (LCM) method for β-SiAlON ceramics that are derived from silicon nitride and have excellent material properties for high temperature applications. This study demonstrates the general feasibility of manufacturing of silicon nitride-based ceramic parts by LCM for the first time and combines the advantages of SLA, such as the achievable complexity and low surface roughness (Ra = 0.50 µm), with the typical properties of conventionally manufactured silicon nitride-based ceramics, such as high relative density (99.8%), biaxial strength (σf = 764 MPa), and hardness (HV10 = 1500).

Analysis and Prediction of Surface Integrity in Machining: A Review

2014 ◽  
Vol 610 ◽  
pp. 1002-1020 ◽  
Author(s):  
Yuan Gao ◽  
Xin Huang ◽  
Ming Jie Lin ◽  
Zheng Guo Wang ◽  
Rong Lei Sun
Keyword(s):  
Surface Roughness ◽  
Grain Size ◽  
Residual Stresses ◽  
Surface Integrity ◽  
Material Properties ◽  
Cutting Parameters ◽  
Mechanical Parameters ◽  
Factors Affecting ◽  
Grain Size And Shape

Surface integrity is widely used for evaluating the quality of machined components. It has a set of various parameters which can be grouped as: (a) topography parameters such as surface roughness, textures and waviness (b) mechanical parameters such as residual stresses and hardness, and (c) metallurgical state such as microstructure, phase transformation, grain size and shape, inclusions etc. Surface roughness and residual stresses are among the most significant parameters of surface integrity, so that it is worth investigating them particularly. Many factors affect the surface integrity of machined components, including cutting parameters, tool parameters, material properties and vibrations. We can make prediction and optimization for surface integrity by taking advantage of these factors. This paper reviews previous studies and gives a comprehensive summary of surface integrity in the following order: introduction of surface integrity, main parameters of surface integrity, factors affecting surface integrity, prediction and optimization for surface integrity.

Comparisons of Surface Roughness for Precision Ground Different Brittle Materials

2009 ◽  
Vol 416 ◽  
pp. 593-597
Author(s):  
Jian Yun Shen ◽  
Xi Peng Xu
Keyword(s):  
Surface Roughness ◽  
Formation Mechanism ◽  
Material Properties ◽  
Brittle Materials ◽  
Mesh Size ◽  
Surface Characteristics ◽  
Grinding Process ◽  
Surface Formation ◽  
Surface Topographies ◽  
Engineering Materials

Brittle materials are popularly used as engineering materials for excellent properties. But the properties of brittle materials are different and special, and cause to different surface formation mechanism during the grinding process. In the study, surface roughnesses after grinding with different mesh size diamond wheels were measured. Combined with scanned surface topographies, the relation between the surface roughness and the properties of these brittle materials was discussed. It could be found that the material properties led to the different surface characteristics of brittle materials.

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