Effect of Curing Lights and Bleaching Agents on Physical Properties of a Hybrid Composite Resin

ABSTRACT:Composite resins are currently the most popular restorative material in dentistry. This is due to good aesthetics and maximum conservation ability. Behind these advantages, there are disbenefits of composite resin materials, such as polymerization shrinkage, which can lead to restoration failure. Various attempts have been investigated to reduce the shrinkage incidence of composite resins, one of which is the technique of placing the restorative material into the cavity. The restoration filling technique is recognized as a significant factor in shrinkage stress. By using a special filling technique, the polymerization shrinkage damage stress can be reduced. There are several techniques in performing composite resin fillings, including bulk and incremental techniques. These techniques have their respective advantages and disadvantages. The aim of this literature review was to compare the physical properties of composite resin restorations with bulk filling and incremental techniques. Physical properties that being studied include polymerization shrinkage, stress shrinkage, degree of conversion, bonding strength, water resorption, color stability, and temperature increase. Comparing the two techniques, composite resin with incremental filling technique has superior physical properties compared to bulk technique. From the comparison of the two techniques, the composite resin with incremental filling technique has superior physical properties compared to the bulk technique, especially in higher conversion which causes lower shrinkage stress. This situation makes the incremental technique provide better bond strength, water resorption, color stability, and lower temperature rise.Keywords: Bulk, Composite Resin, Incremental, Physical Properties, Restoration, Restoration Technique

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Evaluating the Effect of Addition of Titanium Dioxide Nanoparticle on Some Physical Properties of Flowable Composite Resin

Indian Journal of Forensic Medicine & Toxicology ◽

10.37506/ijfmt.v14i4.12023 ◽

2020 ◽

Keyword(s):

Titanium Dioxide ◽

Physical Properties ◽

Composite Resin ◽

Titanium Dioxide Nanoparticle ◽

Flowable Composite

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Compressive strength measurements of hybrid dental composites treated with dry heat and light emitting diodes (LED) post cure treatment

Padjadjaran Journal of Dentistry ◽

10.24198/pjd.vol26no3.14008 ◽

2014 ◽

Vol 26 (3) ◽

Author(s):

Jenny Krisnawaty ◽

Setiawan Natasasmita ◽

Dudi Aripin

Keyword(s):

Compressive Strength ◽

Hybrid Composite ◽

Light Emitting Diodes ◽

Composite Resin ◽

Hybrid Composites ◽

Testing Machine ◽

Dental Composite ◽

Light Emitting ◽

Led Light ◽

Dry Heat

Hybrid composites are mostly used on large cavities as restorative dental materials, whether it is used directly or indirectly. The mechanical properties of composite resin shall increase if it is treated with post cure treatment. The aim of this study is to evaluate compressive strength differences between dry heat and Light Emitting Diodes (LED) treatment on the hybrid dental composite. A quasi-experimental was applied on this research with a total of 30 samples that were divided into two groups. Each sample was tested using LLOYD Universal Testing Machine with 1 mm/min speed to evaluate the compressive strength. The compressive strength results were marked when the sample was broken. The results of two groups were then analyzed using t-test statistical calculation. The results of this study show that post cure treatment on hybrid composite using LED light box (194.138 MPa) was lower than dry heat treatment (227.339 MPa), which was also significantly different from statistical analysis. It can be concluded that compressive strength of LED light box was lower than dry heat post-cure treatment on the hybrid composite resin.

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In vitro analysis and comparison on depth of cure in newer bulk fill composite resin with conventional micro- and nano-hybrid composite resin using two different light sources quartz-tungsten-halogen and light emitting diode with three varying intensities

Journal of International Oral Health ◽

10.4103/jioh.jioh_24_16 ◽

2017 ◽

Vol 9 (1) ◽

pp. 12 ◽

Cited By ~ 2

Author(s):

KamatchiSubramani Savadamoorthi ◽

Swathi Priyadharshini ◽

Anand Sherwood ◽

KandasamyPaulraj Jesudoss ◽

VasanthanVignesh Kumar ◽

...

Keyword(s):

Hybrid Composite ◽

Composite Resin ◽

Light Emitting Diode ◽

Light Sources ◽

Light Emitting ◽

Depth Of Cure ◽

Quartz Tungsten Halogen ◽

Vitro Analysis ◽

In Vitro Analysis

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Effect of different finishing and polishing techniques on the surface roughness of microfilled, hybrid and packable composite resins

Brazilian Dental Journal ◽

10.1590/s0103-64402005000100007 ◽

2005 ◽

Vol 16 (1) ◽

pp. 39-44 ◽

Cited By ~ 31

Author(s):

Silvia Helena Barbosa ◽

Régia Luzia Zanata ◽

Maria Fidela de Lima Navarro ◽

Osvaldo Benoni Nunes

Keyword(s):

Surface Roughness ◽

Aluminum Oxide ◽

Hybrid Composite ◽

Composite Resin ◽

Complete Sequence ◽

Composite Resins ◽

Average Surface Roughness ◽

Surface Smoothness ◽

Average Surface ◽

System Data

This study examined the average surface roughness (Ra, µm) of 2 microfilled (Durafill and Perfection), 1 hybrid (Filtek Z250) and 2 packable composite resins (Surefil and Fill Magic), before (baseline) and after eight different finishing and polishing treatments. The surface roughness was assessed using a profilometer. Ten specimens of each composite resin were randomly subjected to one of the following finishing/polishing techniques: A - carbide burs; B - fine/extrafine diamond burs; C - Sof-Lex aluminum oxide discs; D - Super-Snap aluminum oxide discs; E - rubber polishing points + fine/extrafine polishing pastes; F - diamond burs + rubber polishing points + fine/extrafine polishing pastes; G - diamond burs + Sof-Lex system; H - diamond burs + Super-Snap system. Data were analyzed using two-way ANOVA and Tukey's HSD test. Significant differences (p<0.05) were detected among both the resins and the finishing/polishing techniques. For all resins, the use of diamond burs resulted in the greatest surface roughness (Ra: 0.69 to 1.44 µm). The lowest Ra means were obtained for the specimens treated with Sof-Lex discs (Ra: 0.11 to 0.25 µm). The Ra values of Durafill were lower than those of Perfection and Filtek Z250, and these in turn had lower Ra than the packable composite resins. Overall, the smoothest surfaces were obtained with the use the complete sequence of Sof-Lex discs. In areas that could not be reached by the aluminum oxide discs, the carbide burs and the association between rubber points and polishing pastes produced satisfactory surface smoothness for the packable and hybrid composite resins, respectively.

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