HEMA release and degree of conversion from a resin-modified glass ionomer cement after various delays of light activation

Dursun, Elisabeth; Nguyen, Jean‐François; Tang, Mie-leng; Attal, Jean‐Pierre; Sadoun, Michaël

doi:10.1016/j.dental.2016.02.003

Cited by 20 publications

(29 citation statements)

References 16 publications

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“…These observations were related to the cement chemical compositions, in which ZP cements contain phosphoric acid, ZOE cements contain eugenol, and R cements are acrylate‐based, with these components being known skin irritants . Furthermore, studies have shown that R and RMGIC cements leach unreacted hydroxyethyl methacrylate (HEMA) and triethylene glycol dimethacrylate (TEGDMA) monomers and fluoride ions over a period of several weeks, which can lead to pulpal inflammation and cytotoxicity in preosteoblast and fibroblast cells . High concentrations of eugenol have long been associated with adverse inflammatory reaction, hypersensitivity, and cytotoxicity when in contact with soft‐tissue‐forming and osteoblastic cells .…”

Section: Discussionmentioning

confidence: 99%

“…38 Furthermore, studies have shown that R and RMGIC cements leach unreacted hydroxyethyl methacrylate (HEMA) and triethylene glycol dimethacrylate (TEGDMA) monomers and fluoride ions over a period of several weeks, which can lead to pulpal inflammation and cytotoxicity in preosteoblast and fibroblast cells. [39][40][41][42][43][44] High concentrations of eugenol have long been associated with adverse inflammatory reaction, hypersensitivity, and cytotoxicity when in contact with soft-tissue-forming and osteoblastic cells. 45,46 The observations of increased cytotoxicity for R, RMGIC, and ZOE cement compositions in this study can be related to these previous observations in the literature.…”

Section: Discussionmentioning

confidence: 99%

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In Vitro Evaluation of Cell Compatibility of Dental Cements Used with Titanium Implant Components

Marvin

Gallegos

Parsaei

et al. 2018

Journal of Prosthodontics

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Despite previous studies that showed enhanced cpTi corrosion activity for fluoride-containing compositions (NIB and ZP), there was no significant difference in cytotoxicity between cement alone and cemented-cpTi. In general, the MC3T3-E1 preosteoblast cells were more sensitive than HGF cells to cement composition. Ultimately, cement composition played a significant role in maintaining host cell compatibility. Results of this work help illustrate the impact of different cement formulations on host cell health and emphasize the need for understanding material properties when selecting certain formulations of dental cements, which can ultimately influence the survival of dental implant systems.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

In Vitro Evaluation of Cell Compatibility of Dental Cements Used with Titanium Implant Components

Marvin

Gallegos

Parsaei

et al. 2018

Journal of Prosthodontics

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“…Commercial materials and their compositions used in the study are provided in Table 1 8,[18][19][20] . Materials that require mixing were prepared according to their manufacturer instructions.…”

Section: Methodsmentioning

confidence: 99%

“…Resin-modified glass ionomer cements (RMGICs) has been developed to enable the command setting by photo-polymerization in addition to acid-base neutralization reaction 7) . However, it has been demonstrated that the polymerization of methacrylate monomers may be affected by the restricted radicals mobility from cement hardening through acid-base reaction 8) . This may reduce early strength and increase the risk of toxic monomer release from RMGICs 9) .…”

Section: Introductionmentioning

confidence: 99%

Monomer conversion, dimensional stability, biaxial flexural strength, and fluoride release of resin-based restorative material containing alkaline fillers

Panpisut

Toneluck

2020

Dent. Mater. J.

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The aim of this study was to assess monomer conversion, dimensional stability (mass and volume changes), biaxial flexural strength (BFS), and fluoride release of recently developed resin composites containing alkaline fillers (Cention N; CN) compared with resinmodified glass ionomer cements (RMGICs: Riva LC; RL and Fuji II LC; FL), and conventional composite (Z350). FL showed highest monomer conversion (88±2%) followed by RL (73±10%), CN (59±2%), and Z350 (50±2%). RL exhibited highest mass and volume increase (10.22±0.04 wt% and 19.4±0.2 vol%). CN exhibited higher BFS (180±20 MPa) than RMGICs but lower than Z350 (248±27 MPa). The highest cumulative fluoride release at 6 weeks was observed with RL (136±22 ppm) followed by CN (36±4 ppm) and FL (30±3 ppm). CN exhibited monomer conversion higher than the composite. CN also released fluoride in the range of that observed with RMGICs but with higher flexural strength.

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“…This finding could be related to the incomplete curing reaction of this resin-modified glass ionomer cement during the manufacturer's claimed chemical-curing period of 2.5 min. It was previously shown that chemical-curing without the additional light-curing of a resin-modified glass ionomer resulted in a significantly lower degree of conversion compared to that achieved by light-curing [27]. Exposure of the chemically-cured Vitrebond nonLC to light during the subsequent adhesive curing could facilitate additional polymerization of the uncured methacrylate groups in this material.…”

Section: Discussionmentioning

confidence: 97%

Temperature changes in the pulp chamber induced by polymerization of resin-based dental restoratives following simulated direct pulp capping

Petrović

Stašić

Komlenić

et al. 2019

Hem Ind

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The objective of this study was to measure temperature changes in the pulp chamber induced by polymerization of resin-based dental restoratives following a simulated procedure of direct pulp capping. Class I cavities with a microperforation at the pulp horn were prepared in extracted human molar teeth. The complete procedure of direct pulp capping and cavity restoration was performed with the root part of extracted teeth fixed in a water bath at 37 °C. Mineral trioxide aggregate, bioactive dentin substitute or calciumhydroxide paste were used as pulp capping materials. Cavities were restored with a lightcured or chemically-cured resin-modified glass ionomer, universal adhesive and a bulk-fill composite, cured with a high-intensity LED unit. Pulp capping materials caused a slight temperature decrease. Lower temperature increase was recorded during light-curing of the glass ionomer liner after direct capping with mineral trioxide aggregate and calciumhydroxide than that recorded for the bioactive dentin substitute. Adhesive light-curing increased temperature in all groups with higher mean temperatures in groups with chemically-cured as compared to those for the light-cured glass ionomer liner. Direct pulp capping with mineral trioxide aggregate or calcium-hydroxide followed by the light-cured resin-modified glass ionomer liner and a bonded bulk-fill composite restoration induced temperature changes below the potentially adverse threshold of 42.5 °C.

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HEMA release and degree of conversion from a resin-modified glass ionomer cement after various delays of light activation

Cited by 20 publications

References 16 publications

In Vitro Evaluation of Cell Compatibility of Dental Cements Used with Titanium Implant Components

In Vitro Evaluation of Cell Compatibility of Dental Cements Used with Titanium Implant Components

Monomer conversion, dimensional stability, biaxial flexural strength, and fluoride release of resin-based restorative material containing alkaline fillers

Temperature changes in the pulp chamber induced by polymerization of resin-based dental restoratives following simulated direct pulp capping

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