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.

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 Impact of Polishing Systems on the Surface Roughness and Microhardness of Nanocomposites

2017 ◽  
Vol 18 (8) ◽  
pp. 647-651 ◽  
Author(s):  
Yasser Alfawaz
Keyword(s):  
Surface Roughness ◽  
Composite Materials ◽  
Hardness Test ◽  
Composite Resins ◽  
Control Group ◽  
Surface Microhardness ◽  
Different Types ◽  
One Step ◽  
Polishing Procedures ◽  
And Performance

ABSTRACT Aim The aim of this article is to evaluate the influence of finishing and polishing techniques on the surface roughness and microhardness of two composite resins with two different types of polishing systems. Materials and methods A total of 30 disk-shaped specimens of nanocomposite Filtek™ Z350 and Ceram-X® were prepared. They were divided into three groups. The control group (n = 10) received no finishing and polishing. The remaining specimens were divided into two groups, and they received polishing and finishing either with PoGo or Sof-Lex system. After the polishing procedures, average surface roughness (Ra) was assessed with a surface profilometer. The microhardness was determined using a Vickers hardness test. The data were tabulated and analyzed. Results The smoothest surfaces were noticed with the control group (Mylar strips) in both composite materials tested. The PoGo one-step polishing system showed significantly better surface roughness compared with the Sof-Lex polishing system. The microhardness did not show any significant variations after finishing and polishing. Conclusion It can be concluded that the use of PoGo® onestep polishing system resulted in smoother surface with both composite materials studied compared with the Sof-Lex system. The finishing and polishing system had little influence on the surface microhardness. Clinical significance The finishing procedure and polishing system can affect the physical properties and performance of resin composites. How to cite this article Alfawaz Y. Impact of Polishing Systems on the Surface Roughness and Microhardness of Nanocomposites. J Contemp Dent Pract 2017;18(8):647-651.

scholarly journals Effects of Different Polishing Protocols on Lithium Disilicate Ceramics

2015 ◽  
Vol 26 (5) ◽  
pp. 478-483 ◽  
Author(s):  
Tânia Mara da Silva ◽  
Ana Carolina Rodrigues Danzi Salvia ◽  
Rodrigo Furtado de Carvalho ◽  
Eduardo Galera da Silva ◽  
Clóvis Pagani
Keyword(s):  
Surface Roughness ◽  
Lithium Disilicate ◽  
Sem Analysis ◽  
Surface Treatments ◽  
Control Group ◽  
Morphological Pattern ◽  
Tukey Test ◽  
Polishing Procedures ◽  
Diamond Paste

Abstract: The aim of this study was to evaluate the effect of different polishing protocols on surface roughness and morphology of lithium disilicate ceramics (IPS e.max CAD). Fifty ceramic bars (2.0x3.0x2.5 mm) were produced and randomly divided into five groups (n=10), according to surface treatments: C: Control; Cer: Ceramaster (60 s); CW: cloth wheel with large-grit diamond (30 s) + cloth wheel with fine-grit diamond paste (30 s); E: grey Exa-Cerapol (20 s) + pink Exa-Cerapol (20 s) + Cerapol Super (20 s); F: Felt wheel with large-grit diamond paste (30 s) + Felt wheel with fine-grit diamond paste (30 s). The samples were evaluated quantitatively for surface roughness (Ra) and qualitatively by SEM, at different moments: initial (prior to roughening), after roughening and after polishing procedures. Ra means were submitted to two-way ANOVA and Tukey test (p<0.05). After the different polishing protocols, no statistically significant differences were observed between the Cer and E groups (p=0.6347), E and CW groups (p=0.1366), and CW and FW groups (p=0.5433). Comparing different stages in the same group, it was possible to observe that CW (p<0.0001) and FW groups (p<0.0001) showed significant differences. SEM analysis revealed that both Cer and E groups exhibited a surface morphological pattern similar to that of control group. All polishing systems were effective in reducing the surface roughness of the studied ceramic type.

scholarly journals Durability of Enamel Bonding Using One-step Self-etch Systems on Ground and Unground Enamel

10.2341/08-58 ◽  
2009 ◽  
Vol 34 (2) ◽  
pp. 181-191 ◽  
Author(s):  
A. Reis ◽  
S. K. Moura ◽  
A. Pellizzaro ◽  
K. Dal-Bianco ◽  
A. M. Andrade ◽  
...  
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Water Storage ◽  
Adhesive System ◽  
One Step ◽  
Bond Strengths ◽  
Self Etch

Clinical Relevance The improvement of resin-enamel bond strengths after using Si-C paper and diamond burs for enamel preparation is material dependent. No degradation of enamel bond strength could be observed for any one-step self-etch adhesive system after 12 months of water storage.

Clinical Evaluation of Indirect Composite Restorations at Baseline and 36 Months After Placement

2010 ◽  
Vol 35 (2) ◽  
pp. 156-164 ◽  
Author(s):  
W. Dukic ◽  
O. L. Dukic ◽  
S. Milardovic ◽  
B. Delija
Keyword(s):  
Clinical Evaluation ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Good Choice ◽  
Hybrid Resin ◽  
Composite Restorations ◽  
Clinical Difference ◽  
Indirect Composite

Clinical Relevance Indirect resin composite restorations represent a good choice for the therapy of severely damaged teeth. There is no clinical difference between Ormocer and nano-hybrid resin composite after 36 months.

Effect of Cyclic Loading on the Microtensile Bond Strengths of Total-etch and Self-etch Adhesives

2006 ◽  
Vol 31 (1) ◽  
pp. 25-32 ◽  
Author(s):  
M. Toledano ◽  
R. Osorio ◽  
A. Albaladejo ◽  
F. S. Aguilera ◽  
F. R. Tay ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Clinical Relevance ◽  
Acid Etching ◽  
One Step ◽  
Bond Strengths ◽  
Self Etch ◽  
Etching System ◽  
Better Than

Clinical Relevance Resin-dentin bonds, which may have an influence on the long-term success of restorations, are prone to deterioration after cyclic loading. The tested one-step self-etching system (Etch&Prime 3.0) provided the least reliable dentin adhesion. After acid etching of dentin, alcohol/based adhesives performed better than those containing acetone as solvent.

Influence of the Finishing Technique on Surface Roughness of Dental Porcelains with Different Microstructures

2006 ◽  
Vol 31 (5) ◽  
pp. 577-583 ◽  
Author(s):  
R. M. C. Sasahara ◽  
F. C. Ribeiro ◽  
P. F. Cesar ◽  
H. N. Yoshimura
Keyword(s):  
Surface Roughness ◽  
Clinical Relevance

Clinical Relevance After the glaze layer of a ceramic restoration is broken, the clinician should pay attention to the specific porcelain used in the prosthetic work, since the best finishing technique (reglazing versus polishing) depends on the porcelain's characteristics.

Effect of Polishing Systems on Surface Roughness and Topography of Monolithic Zirconia

2016 ◽  
Vol 41 (4) ◽  
pp. 417-423 ◽  
Author(s):  
CL Goo ◽  
AUJ Yap ◽  
KBC Tan ◽  
AS Fawzy
Keyword(s):  
Surface Roughness ◽  
Sem Images ◽  
Group 4 ◽  
Diamond Bur ◽  
Before And After ◽  
Monolithic Zirconia ◽  
Polishing Procedures ◽  
Group 5 ◽  
Group 2 ◽  
Post Hoc

SUMMARY This study evaluated the effect of different chairside polishing systems on the surface roughness and topography of monolithic zirconia. Thirty-five monolithic zirconia specimens (Lava PLUS, 3M ESPE) were fabricated and divided into five groups of seven and polished with the following: Group 1 (WZ)—Dura white stone followed by Shofu zirconia polishing kit; Group 2 (SZ)—Shofu zirconia polishing kit; Group 3 (CE)—Ceramiste porcelain polishers; Group 4 (CM)—Ceramaster porcelain polishers; and Group 5 (KZ)—Komet ZR zirconia polishers. All specimens were ground with a fine-grit diamond bur prior to polishing procedures to simulate clinical finishing. Baseline and post-polishing profilometric readings were recorded and delta Ra values (difference in mean surface roughness before and after polishing) were computed and analyzed using one-way analysis of variance and Scheffe post hoc test (p&lt;0.05). Representative scanning electron microscopy (SEM) images of the ground but unpolished and polished specimens were acquired. Delta Ra values ranged from 0.146 for CE to 0.400 for KZ. Delta Ra values for KZ, WZ, and SZ were significantly greater than for CE. Significant differences in delta Ra values were also observed between KZ and CM. The SEM images obtained were consistent with the profilometric findings. Diamond-impregnated polishing systems were more effective than silica carbide–impregnated ones in reducing the surface roughness of ground monolithic zirconia.

scholarly journals Surface Roughness in Ceramics with Different Finishing Techniques Using Atomic Force Microscope and Profilometer

10.2341/05-54 ◽  
2006 ◽  
Vol 31 (4) ◽  
pp. 442-449 ◽  
Author(s):  
B. Tholt ◽  
W. G. Miranda-Júnior ◽  
R. Prioli ◽  
J. Thompson ◽  
M. Oda
Keyword(s):  
Surface Roughness ◽  
Atomic Force Microscope ◽  
Clinical Relevance ◽  
Ceramic Surface ◽  
Surface Smoothness ◽  
Atomic Force ◽  
Ceramic Surfaces ◽  
Ceramic Restorations

Clinical Relevance Ceramic restorations often require intraoral adjustment and the use of a polishing kit is mandatory to re-establish surface smoothness. When the ceramic surface was ground and polished, the 3 types of ceramic restorations reacted differently to each tested polishing kit. Some of the polished surfaces obtained were at least equivalent to glaze-fired ceramic surfaces.

scholarly journals Effect of two polishing systems on color and surface roughness of feldspathic porcelain following orthodontic bracket debonding and composite resin removal

2019 ◽  
Vol 9 ◽  
pp. 105-110
Author(s):  
Nazila Ameli ◽  
Reihane Talaei ◽  
Saeedeh Saeedi ◽  
Raheb Ghorbani ◽  
Bahareh Ali Askari
Keyword(s):  
Surface Roughness ◽  
Color Change ◽  
Orthodontic Bracket ◽  
Force Microscopy ◽  
Color Parameters ◽  
Atomic Force ◽  
Polishing Procedures ◽  
Feldspathic Porcelain ◽  
Group 2 ◽  
Level Of Significance

Objectives Orthodontic bracket removal from a porcelain crown can roughen the surface and lead to plaque accumulation, discoloration, and esthetic problems. Porcelain polishing after debonding is one strategy to decrease such consequences. This study aimed to compare the efficacy of two polishing systems (Sof-Lex discs and Meisinger polishing system) for correction of surface roughness and discoloration of porcelain after orthodontic bracket debonding. Materials and Methods Twenty porcelain blocks were evaluated in two groups of 10. First, the baseline surface roughness and color parameters of the samples were measured using atomic force microscopy and spectrophotometry, respectively. After bracket bonding, a fine cutter was used for bracket debonding, and resin remnants were removed by a tungsten carbide bur and low-speed handpiece. Samples were then polished using Sof-Lex discs (group 1) and Meisinger porcelain polishing kit (group 2). Surface roughness and color parameters were measured again. Data were analyzed using SPSS 18 through the Shapiro–Wilk test, Student’s t-test, and paired t-test at 5% level of significance. Results Porcelain color change (ΔE) was significantly greater in the Meisinger system than Sof-Lex (P < 0.001). The Rq, Ra, and Rt surface roughness parameters significantly increased in both the groups after the intervention compared to baseline (P < 0.05), but the two groups were not significantly different in this respect after the polishing procedures (P > 0.05). Conclusion The porcelain color after polishing with Sof-Lex discs was closer to the baseline. Furthermore, the two systems were not significantly different regarding surface roughness. However, Sof-Lex discs may be recommended due to lower cost.

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