Elution of monomer from different bulk fill dental composite resins

Cebe, Mehmet Ata; Cebe, Fatma; Cengiz, Mehmet Fatih; Çetin, Ali; Arpağ, Osman Fatih; Öztürk, Burhan

doi:10.1016/j.dental.2015.04.008

Cited by 94 publications

(103 citation statements)

References 48 publications

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“…2). Previous studies also showed increasing the HEMA content resulted in an increase in water sorption4956575859. This may promote the water diffusion into the resin and the ion release as well as recharge and long-term re-release.…”

Section: Discussionmentioning

confidence: 89%

Rechargeable calcium phosphate orthodontic cement with sustained ion release and re-release

Zhang

Weir

Chow

et al. 2016

Sci Rep

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White spot lesions (WSL) due to enamel demineralization are major complications for orthodontic treatments. Calcium phosphate (CaP) dental resins with Ca and P ion releases are promising for remineralization. However, previous Ca and P releases lasted for only weeks. Experimental orthodontic cements were developed using pyromellitic glycerol dimethacrylate (PMGDM) and ethoxylated bisphenol A dimethacrylate (EBPADMA) at mass ratio of 1:1 (PE); and PE plus 10% of 2-hydroxyethyl methacrylate (HEMA) and 5% of bisphenol A glycidyl dimethacrylate (BisGMA) (PEHB). Particles of amorphous calcium phosphate (ACP) were incorporated into PE and PEHB at 40% filler level. Specimens were tested for bracket-enamel shear bond strength, water sorption, CaP release, and ion recharge and re-release. PEHB+40ACP had higher bracket-enamel bond strength and ion release and rechargeability than PE+40ACP. ACP incorporation into the novel orthodontic cement did not adversely affect the bracket-enamel bond strength. Ion release and re-release from the novel ACP orthodontic cement indicated favorable release and re-release patterns. The recharged orthodontic cement could release CaP ions continuously for four weeks without further recharge. Novel rechargeable orthodontic cement containing ACP was developed with a high bracket-enamel bond strength and the ability to be repeatedly recharged to maintain long-term high levels of CaP ion releases.

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Section: Discussionmentioning

confidence: 89%

Rechargeable calcium phosphate orthodontic cement with sustained ion release and re-release

Zhang

Weir

Chow

et al. 2016

Sci Rep

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“…Resin-based materials are known to show toxic reactions in cell cultures and various studies have shown that toxicity is primarily induced by monomers released from the material 3,6,12,13,[18][19][20] . In this study, the elution of UDMA and TEGDMA from self-adhesive resin cements in artificial saliva with time is evaluated and biological effects of the cumulative monomer amounts are determined.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of residual monomer release and toxicity of self-adhesive resin cements

Kurt

Altıntaş

Kızıltaş

et al. 2018

Dental Materials Journal

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The aim of this study was to evaluate the amount of leached residual monomers from self-adhesive resin cements and evaluate their toxicity in-vitro. A total of 60 disk-shaped specimens (5 mm in diameter and 0.5 mm in thickness) were prepared from each cement (RelyX U200, SpeedCEM, G-Cem) (n=20). Specimens were immersed in artificial saliva and the amount of released monomers [urethane dimethacrylate (UDMA) and triethyleneglycol dimethacrylate (TEGDMA)] was identified. Then, the cytotoxicity and genotoxicity effect on cells were evaluated using the defined amounts of released monomers from cements. The highest monomer release was detected in G-Cem (p<0.05). The highest cytotoxicity value was identified from SpeedCEM (p<0.01) and the highest genotoxicity values were calculated from RelyX U200 (p<0.05). Released UDMA and TEGDMA from self-adhesive resin cements induced cytotoxicity and genotoxicity effect on cells.

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“…Instead, regarding the biological properties, an incomplete curing of the composite might be responsible for bacterial colonization. In fact, the release of monomers (such as EGDMA and TEDGMA) from incompletely cured composites has been reported to promote the proliferation of cariogenic bacteria [10], as well as being associated with the cytotoxicity of gingival and pulp fibroblast cells [11]. Considering that residual monomers can be released even in well-polymerized RBCs [12], a major amount might elute from BFCs.…”

Section: Introductionmentioning

confidence: 99%

New Resin-Based Bulk-Fill Composites: in vitro Evaluation of Micro-Hardness and Depth of Cure as Infection Risk Indexes

et al. 2020

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The current in vitro study evaluated the Vickers hardness number (VHN) and hardness ratio of four bulk-fill composites (VisCalor bulk; Admira Fusion x-tra; x-tra fil; and GrandioSO x-tra-Voco, Cuxhaven, Germany) to assess the risk of bacterial colonization in comparison with standard composite materials. Thirty samples were prepared for each group. The VHN of both the external (top) and internal surface (bottom) was determined with a micro-hardness tester (200 g load for 15 s), and the hardness ratio was also calculated for each sample. Subsequently, storage in an acidic soft drink (Coca-Cola, Coca-Cola Company, Milano, Italy) was performed; for each group, 10 samples were stored for 1 day, while another 10 were stored for 7 days and the remaining 10 were kept in water as controls. A significant reduction in VHN was shown for all the groups when comparing the external versus internal side (P < 0.05), although the hardness ratio was greater than 0.80, resulting in an adequate polymerization. Regarding the acid storage, all the groups showed a significant decrease of VHN when compared with the controls, both after 1 day (P < 0.05) and after 7 days (P < 0.001). All the products showed adequate depth of cure without further risk of bacterial colonization. However, acid exposure negatively affected micro-hardness values, which might promote subsequent colonization.

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Elution of monomer from different bulk fill dental composite resins

Cited by 94 publications

References 48 publications

Rechargeable calcium phosphate orthodontic cement with sustained ion release and re-release

Rechargeable calcium phosphate orthodontic cement with sustained ion release and re-release

Evaluation of residual monomer release and toxicity of self-adhesive resin cements

New Resin-Based Bulk-Fill Composites: in vitro Evaluation of Micro-Hardness and Depth of Cure as Infection Risk Indexes

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