Photopolymerization of dental resin as restorative material using an argon laser

Khosroshahi, Mohammad E.; Atai, Mohammad; Nourbakhsh, Mohammad Sadegh

doi:10.1007/s10103-007-0487-1

Cited by 17 publications

(10 citation statements)

References 24 publications

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“…Indeed, metal complexes are highly controversed photoinitiators/photosensitizers due to their potential toxicities and the resulting photopolymers can't be used for food packaging [290][291] or medical applications. [292][293][294][295][296][297][298][299][300][301] Recently, a great deal of efforts has been devoted to develop biosourced or bioinspired photoinitiating systems. The recent development of chalcones-based photosensitizers corresponds to this new interest, and ferrocene is also well-known to exhibit a low toxicity.…”

Section: Free Radical Polymerization Using Ferrocene-based Chalconesmentioning

confidence: 99%

Recent advances on ferrocene-based photoinitiating systems

Dumur

2021

European Polymer Journal

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Photoinitiators of polymerization with reversible electrochemical properties are actively researched as these molecules can advantageously be used in photocatalytic systems, enabling to reduce the photoinitiators content within the photocurable resins. In this field, ferrocene which is extensively used by electrochemists as a reference compound for cyclic voltammetry also exhibits a significant absorption in the visible range as well as a low oxidation potential so that this metallocene was used as a potential candidate for the design of photoinitiators of polymerization. Over the years, ferrocene has been examined in numerous polymerization processes going from anionic to cationic polymerizations, but also for the freeradical polymerization of acrylates or as a sacrificial electron donor in free radical polymerization processes. Parallel to this, the development of cheap, compact and energysaving irradiation setups based on light-emitting diodes (LEDs) have clearly favored the development of visible light photoinitiators and this technology has nowadays the potential to replace the well-established UV photopolymerization. In this review, an overview of the recent development of the ferrocene-based photoinitiating systems is provided. To evidence the interest of the ferrocene derivatives recently developed, comparisons with benchmark photoinitiators will be provided.

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Section: Free Radical Polymerization Using Ferrocene-based Chalconesmentioning

confidence: 99%

Recent advances on ferrocene-based photoinitiating systems

Dumur

2021

European Polymer Journal

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“…The argon ion laser has arisen as an alternative light source for polymerizing resin composites, resin luting cements, and for bleaching procedures [19][20][21]. For camphorquinone-based resins, the activation emits a blue light in the wavelength range 400-500 nm with peak values at about 468 and 480 nm, depending on the monomer formulation, and it has an irradiance at up to 2,000 mW/cm 2 [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

The effect of curing light and chemical catalyst on the degree of conversion of two dual cured resin luting cements

et al. 2010

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The aim of this study was to evaluate the influence of different curing lights and chemical catalysts on the degree of conversion of resin luting cements. A total of 60 disk-shaped specimens of RelyX ARC or Panavia F of diameter 5 mm and thickness 0.5 mm were prepared and the respective chemical catalyst (Scotchbond Multi-Purpose Plus or ED Primer) was added. The specimens were lightcured using different curing units (an argon ion laser, an LED or a quartz-tungsten-halogen light) through shade A2 composite disks of diameter 10 mm and thickness 2 mm. After 24 h of dry storage at 37°C, the degree of conversion of the resin luting cements was measured by Fouriertransformed infrared spectroscopy. For statistical analysis, ANOVA and the Tukey test were used, with p≤0.05. Panavia F when used without catalyst and cured using the LED or the argon ion laser showed degree of conversion values significantly lower than RelyX ARC, with and without catalyst, and cured with any of the light sources. Therefore, the degree of conversion of Panavia F with ED Primer cured with the quartz-tungsten-halogen light was significantly different from that of RelyX ARC regardless of the use of the chemical catalyst and light curing source. In conclusion, RelyX ARC can be cured satisfactorily with the argon ion laser, LED or quartz-tungsten-halogen light with or without a chemical catalyst. To obtain a satisfactory degree of conversion, Panavia F luting cement should be used with ED Primer and cured with halogen light.

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“…However, with most current products, filler particle sizes have become much smaller (<1 pm), and the microhardness values appear more reliable [62].…”

Section: Knoop Hardnessmentioning

confidence: 99%

“…Thermal changes are also cyclic in nature, and although the entire restoration may never reach thermal equilibrium during the application of either hot or cold stimuli, the cyclic effect can lead to material fatigue and early bond failure. If a gap were formed, the difference between the thermal coefficient of expansion of composites and teeth could allow for the percolation of oral fluids [62]. …”

Section: Thermal Propertiesmentioning

confidence: 99%