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Nicoleta Ilie - One of the best experts on this subject based on the ideXlab platform.

  • evaluation of a Conventional Glass ionomer cement with new zinc formulation effect of coating aging and storage agents
    Clinical Oral Investigations, 2013
    Co-Authors: Julius Zoergiebel, Nicoleta Ilie
    Abstract:

    Objective The study focused on a recently launched Conventional Glass ionomer cement (GIC) with a particular chemical formulation of both, filler and acrylic liquid, by analysing its mechanical behaviour in comparison to three Conventional GICs. Furthermore, the effect of resin coating and storage conditions was evaluated.

  • Evaluation of a Conventional Glass ionomer cement with new zinc formulation: effect of coating, aging and storage agents
    Clinical Oral Investigations, 2013
    Co-Authors: Julius Zoergiebel, Nicoleta Ilie
    Abstract:

    Objective The study focused on a recently launched Conventional Glass ionomer cement (GIC) with a particular chemical formulation of both, filler and acrylic liquid, by analysing its mechanical behaviour in comparison to three Conventional GICs. Furthermore, the effect of resin coating and storage conditions was evaluated. Materials and methods Three commercially available GICs were chosen: Riva Self Cure (SDI), Fuji IX Fast (GC) and Fuji IX GP Extra/Equia (GC). Additionally a newly developed zinc-containing GIC—ChemFil Rock (Dentsply)—was tested. Mechanical properties were determined at macro- [flexural strength (FS) and modulus of elasticity ( E _flexural)] and micro-scale [Vickers hardness (VH) and indentation modulus ( E )] after storing coated and uncoated specimens in artificial saliva and distilled water for 7 and 30 days. Results ChemFil Rock revealed the highest FS, but the lowest VH and E . The micro-mechanical properties of the analysed GICs did neither benefit from the new zinc formulation nor from resin coating. A resin coating is nevertheless a valuable support for GIC fillings, since it offers the absence of visible surface defects like crazing and voids, and thus, it led to significant improvements in flexural strength. This statement is also valid for ChemFil Rock, contrary to manufacture recommendation. The impact of storage agent and storage duration on the measured properties was low. Conclusions The new development (ChemFil Rock) might represent a promising approach regarding longevity of GIC fillings in molar regions, due to the high flexural strength and the absence of visible surface defects like crazing and voids. Clinical relevance All GICs should receive surface protection in order to perform their maximum in stability.

Norbert Gutknecht - One of the best experts on this subject based on the ideXlab platform.

  • Effect of radiant heat on Conventional Glass ionomer cements during setting by using a blue light diode laser system (445 nm)
    Lasers in Medical Science, 2017
    Co-Authors: Dimitrios Dionysopoulos, Kosmas Tolidis, Dimitrios Strakas, Paris Gerasimou, Thrasyvoulos Sfeikos, Norbert Gutknecht
    Abstract:

    The aim of this in vitro study was to evaluate the effect of radiant heat on surface hardness of three Conventional Glass ionomer cements (GICs) by using a blue diode laser system (445 nm) and a light-emitting diode (LED) unit. Additionally, the safety of the laser treatment was evaluated. Thirty disk-shaped specimens were prepared of each tested GIC (Equia Fil, Ketac Universal Aplicap and Riva Self Cure). The experimental groups ( n  = 10) of the study were as follows: group 1 was the control group of the study; in group 2, the specimens were irradiated for 60 s at the top surface using a LED light-curing unit; and in group 3, the specimens were irradiated for 60 s at the top surface using a blue light diode laser system (445 nm). Statistical analysis was performed using one-way ANOVA and Tukey post-hoc tests at a level of significance of a  = 0.05. Radiant heat treatments, with both laser and LED devices, increased surface hardness ( p  

  • Effect of radiant heat on Conventional Glass ionomer cements during setting by using a blue light diode laser system (445 nm).
    Lasers in medical science, 2017
    Co-Authors: Dimitrios Dionysopoulos, Kosmas Tolidis, Dimitrios Strakas, Paris Gerasimou, Thrasyvoulos Sfeikos, Norbert Gutknecht
    Abstract:

    The aim of this in vitro study was to evaluate the effect of radiant heat on surface hardness of three Conventional Glass ionomer cements (GICs) by using a blue diode laser system (445 nm) and a light-emitting diode (LED) unit. Additionally, the safety of the laser treatment was evaluated. Thirty disk-shaped specimens were prepared of each tested GIC (Equia Fil, Ketac Universal Aplicap and Riva Self Cure). The experimental groups (n = 10) of the study were as follows: group 1 was the control group of the study; in group 2, the specimens were irradiated for 60 s at the top surface using a LED light-curing unit; and in group 3, the specimens were irradiated for 60 s at the top surface using a blue light diode laser system (445 nm). Statistical analysis was performed using one-way ANOVA and Tukey post-hoc tests at a level of significance of a = 0.05. Radiant heat treatments, with both laser and LED devices, increased surface hardness (p < 0.05) but in different extent. Blue diode laser treatment was seemed to be more effective compared to LED treatment. There were no alterations in surface morphology or chemical composition after laser treatment. The tested radiant heat treatment with a blue diode laser may be advantageous for the longevity of GIC restorations. The safety of the use of blue diode laser for this application was confirmed.

Julius Zoergiebel - One of the best experts on this subject based on the ideXlab platform.

  • evaluation of a Conventional Glass ionomer cement with new zinc formulation effect of coating aging and storage agents
    Clinical Oral Investigations, 2013
    Co-Authors: Julius Zoergiebel, Nicoleta Ilie
    Abstract:

    Objective The study focused on a recently launched Conventional Glass ionomer cement (GIC) with a particular chemical formulation of both, filler and acrylic liquid, by analysing its mechanical behaviour in comparison to three Conventional GICs. Furthermore, the effect of resin coating and storage conditions was evaluated.

  • Evaluation of a Conventional Glass ionomer cement with new zinc formulation: effect of coating, aging and storage agents
    Clinical Oral Investigations, 2013
    Co-Authors: Julius Zoergiebel, Nicoleta Ilie
    Abstract:

    Objective The study focused on a recently launched Conventional Glass ionomer cement (GIC) with a particular chemical formulation of both, filler and acrylic liquid, by analysing its mechanical behaviour in comparison to three Conventional GICs. Furthermore, the effect of resin coating and storage conditions was evaluated. Materials and methods Three commercially available GICs were chosen: Riva Self Cure (SDI), Fuji IX Fast (GC) and Fuji IX GP Extra/Equia (GC). Additionally a newly developed zinc-containing GIC—ChemFil Rock (Dentsply)—was tested. Mechanical properties were determined at macro- [flexural strength (FS) and modulus of elasticity ( E _flexural)] and micro-scale [Vickers hardness (VH) and indentation modulus ( E )] after storing coated and uncoated specimens in artificial saliva and distilled water for 7 and 30 days. Results ChemFil Rock revealed the highest FS, but the lowest VH and E . The micro-mechanical properties of the analysed GICs did neither benefit from the new zinc formulation nor from resin coating. A resin coating is nevertheless a valuable support for GIC fillings, since it offers the absence of visible surface defects like crazing and voids, and thus, it led to significant improvements in flexural strength. This statement is also valid for ChemFil Rock, contrary to manufacture recommendation. The impact of storage agent and storage duration on the measured properties was low. Conclusions The new development (ChemFil Rock) might represent a promising approach regarding longevity of GIC fillings in molar regions, due to the high flexural strength and the absence of visible surface defects like crazing and voids. Clinical relevance All GICs should receive surface protection in order to perform their maximum in stability.

Dimitrios Dionysopoulos - One of the best experts on this subject based on the ideXlab platform.

  • Effect of radiant heat on Conventional Glass ionomer cements during setting by using a blue light diode laser system (445 nm)
    Lasers in Medical Science, 2017
    Co-Authors: Dimitrios Dionysopoulos, Kosmas Tolidis, Dimitrios Strakas, Paris Gerasimou, Thrasyvoulos Sfeikos, Norbert Gutknecht
    Abstract:

    The aim of this in vitro study was to evaluate the effect of radiant heat on surface hardness of three Conventional Glass ionomer cements (GICs) by using a blue diode laser system (445 nm) and a light-emitting diode (LED) unit. Additionally, the safety of the laser treatment was evaluated. Thirty disk-shaped specimens were prepared of each tested GIC (Equia Fil, Ketac Universal Aplicap and Riva Self Cure). The experimental groups ( n  = 10) of the study were as follows: group 1 was the control group of the study; in group 2, the specimens were irradiated for 60 s at the top surface using a LED light-curing unit; and in group 3, the specimens were irradiated for 60 s at the top surface using a blue light diode laser system (445 nm). Statistical analysis was performed using one-way ANOVA and Tukey post-hoc tests at a level of significance of a  = 0.05. Radiant heat treatments, with both laser and LED devices, increased surface hardness ( p  

  • Effect of radiant heat on Conventional Glass ionomer cements during setting by using a blue light diode laser system (445 nm).
    Lasers in medical science, 2017
    Co-Authors: Dimitrios Dionysopoulos, Kosmas Tolidis, Dimitrios Strakas, Paris Gerasimou, Thrasyvoulos Sfeikos, Norbert Gutknecht
    Abstract:

    The aim of this in vitro study was to evaluate the effect of radiant heat on surface hardness of three Conventional Glass ionomer cements (GICs) by using a blue diode laser system (445 nm) and a light-emitting diode (LED) unit. Additionally, the safety of the laser treatment was evaluated. Thirty disk-shaped specimens were prepared of each tested GIC (Equia Fil, Ketac Universal Aplicap and Riva Self Cure). The experimental groups (n = 10) of the study were as follows: group 1 was the control group of the study; in group 2, the specimens were irradiated for 60 s at the top surface using a LED light-curing unit; and in group 3, the specimens were irradiated for 60 s at the top surface using a blue light diode laser system (445 nm). Statistical analysis was performed using one-way ANOVA and Tukey post-hoc tests at a level of significance of a = 0.05. Radiant heat treatments, with both laser and LED devices, increased surface hardness (p < 0.05) but in different extent. Blue diode laser treatment was seemed to be more effective compared to LED treatment. There were no alterations in surface morphology or chemical composition after laser treatment. The tested radiant heat treatment with a blue diode laser may be advantageous for the longevity of GIC restorations. The safety of the use of blue diode laser for this application was confirmed.

Deivanayagam Kandaswamy - One of the best experts on this subject based on the ideXlab platform.

  • an in vitro study to assess the setting and surface crazing of Conventional Glass ionomer cement when layered over partially set mineral trioxide aggregate
    Journal of Endodontics, 2008
    Co-Authors: Suma Ballal, Nagendrababu Venkateshbabu, Suresh Nandini, Deivanayagam Kandaswamy
    Abstract:

    Abstract The aim of our study was to assess the setting time and surface crazing of Glass ionomer cement when layered over partially set mineral trioxide aggregate (MTA). To assess setting time, 40 hollow, cylindrical stainless steel molds were taken and equally divided into 4 groups. In groups I, II, and III Glass ionomer cement was layered over partially setting MTA at 45 minutes, 4 hours, and 3 days, respectively. Group IV was used as a control. An additional 50 specimens were prepared for assessment of surface crazing. Twenty specimens (groups I and II) were prepared to study normal and desiccated patterns of Conventional Glass ionomer cement, respectively. Thirty specimens (groups III, IV, and V) were prepared by layering Glass ionomer cement over partially set MTA at various time intervals. All the specimens were stained with red ink and analyzed for craze lines by light microscopy. From our study, it was observed that there was no statistical difference in setting time of Glass ionomer cement when layered over partially set MTA in comparison to that of the control group. No craze lines were observed in those specimens (groups III, IV, and V) when viewed under staining and light microscopy. It could be concluded that Conventional Glass ionomer cement might be layered over partially set MTA after 45 minutes and could be used for single visit procedures.

  • Comparative Study Of Surface Finish Of Conventional Glass Ionomer Cement With Fast Setting Glass Ionomer Cement – In Vitro Study
    Journal of Conservative Dentistry, 1999
    Co-Authors: Kadandale Sadasiva, C. V Subbarao, Deivanayagam Kandaswamy
    Abstract:

    An in-vitro study was done to compare the surface finish of Conventional Glass Ionomer Cement with that of fast setting Glass Ionomer cement. (In-vitro study) Ten intact non-carious central incisors were selected and Non-retentive class V cavities were prepared and 5 teeth were filled with Conventional Glass Ionomer Cement (Group I) and remaining 5 teeth were filled with fast setting Glass Ionomer (Group II). All the samples were finished and polished. The samples were subjected to Scanning Electron Microscope (SEM) analysis. Results showed that under all magnifications fast setting Glass Ionomer Cement exhibits better surface finish and marginal integrity when compared to Conventional Glass Ionomer Cement.