Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

Bosso‐Martelo, Roberta; Guerreiro-Tanomaru, Juliane Maria; Viapiana, Raqueli; Berbert, Fábio Luiz Camargo Vilella; Duarte, Marco Antônio Húngaro; Tanomaru-Filho, Mário

doi:10.1007/s00784-015-1483-7

Cited by 47 publications

(60 citation statements)

References 43 publications

(71 reference statements)

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“…Compared with the regularly used PC, LPC has a slow initial hydration rate and an excellent long-term hardness. On the other hand, the addition of nanoparticulate RA affects some physical properties of the CSC when compared with MTA [10]. In the results, the ZO group exhibited a significantly higher flow value compared with the MTA group ( p < 0.05).…”

Section: Discussionmentioning

confidence: 99%

“…For example, BO has been reported to reduce the compressive strength [8] and extend the setting time [9] of CSCs. Bosso-Martelo et al [10] evaluated the physical and chemical properties of CSCs with different chemical compositions by replacing an RA with other materials. Microsized zirconium oxide (ZO) particles may be considered a potential RA for use in association with CSCs.…”

Section: Introductionmentioning

confidence: 99%

“…Microsized zirconium oxide (ZO) particles may be considered a potential RA for use in association with CSCs. Moreover, the addition of nanoparticulate RA affects some of CSCs' physical properties, such as decreasing their radiopacity and retarding their initial and final setting times when compared with MTA [10]. Additionally, numerous attempts have been made to improve the handling properties of MTA by adding materials to enhance viscosity [7, 11]; Ber et al [11] reported that the addition of methyl cellulose (MC), which is cellulose ether (CE), improved the handling properties of CSCs.…”

Section: Introductionmentioning

confidence: 99%

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Examination of Calcium Silicate Cements with Low-Viscosity Methyl Cellulose or Hydroxypropyl Cellulose Additive

Baba

Tsujimoto

2016

BioMed Research International

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The purpose of this study was to improve the operability of calcium silicate cements (CSCs) such as mineral trioxide aggregate (MTA) cement. The flow, working time, and setting time of CSCs with different compositions containing low-viscosity methyl cellulose (MC) or hydroxypropyl cellulose (HPC) additive were examined according to ISO 6876-2012; calcium ion release analysis was also conducted. MTA and low-heat Portland cement (LPC) including 20% fine particle zirconium oxide (ZO group), LPC including zirconium oxide and 2 wt% low-viscosity MC (MC group), and HPC (HPC group) were tested. MC and HPC groups exhibited significantly higher flow values and setting times than other groups (p < 0.05). Additionally, flow values of these groups were higher than the ISO 6876-2012 reference values; furthermore, working times were over 10 min. Calcium ion release was retarded with ZO, MC, and HPC groups compared with MTA. The concentration of calcium ions was decreased by the addition of the MC or HPC group compared with the ZO group. When low-viscosity MC or HPC was added, the composition of CSCs changed, thus fulfilling the requirements for use as root canal sealer. Calcium ion release by CSCs was affected by changing the CSC composition via the addition of MC or HPC.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Examination of Calcium Silicate Cements with Low-Viscosity Methyl Cellulose or Hydroxypropyl Cellulose Additive

Baba

Tsujimoto

2016

BioMed Research International

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“…Although there are some attepts to use different radiopacifier, like ytterbium trifluoride 18 and zirconium oxide 19 that may improve some other properties, we decided to use Bi 2 O 3 because they provide lower contrast. The same radiocontrast agent was used in the case of MTA + .…”

Section: Mtt Testmentioning

confidence: 99%

In vitro biocompatibility of nanostructured endodontic materials using SCAP cells

Ćetenović¹,

Čolović²,

Vasilijić³

et al. 2017

Balkan J Dent Med

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“…This material has also provided suitable results in regard to proliferation and differentiation of dental pulp cells. 14 Bosso-Martelo et al 15 evaluated the physicochemical properties of calcium silicate cements with additives and resins. Some combinations of silicate-based cements and different radiopacifiers have provided a shorter final setting time, low solubility, alkaline pH and calcium ion release.…”

Section: 11mentioning

confidence: 99%

Cytotoxicity and genotoxicity of calcium silicate-based cements on an osteoblast lineage

et al. 2016

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Cytotoxicity and genotoxicity of calcium silicate-based cements on an osteoblast lineage Abstract: Several calcium silicate-based biomaterials have been developed in recent years, in addition to Mineral Trioxide Aggregate (MTA). The aim of this study was to evaluate the cytotoxicity, genotoxicity and apoptosis/necrosis in human osteoblast cells (SAOS-2) of pure calcium silicate-based cements (CSC) and modified formulations: modified calcium silicate-based cements (CSCM) and three resin-based calcium silicate cements (CSCR1) (CSCR 2) (CSCR3). The following tests were performed after 24 hours of cement extract exposure: methyl-thiazolyl tetrazolium (MTT), apoptosis/necrosis assay and comet assay. The negative control (CT-) was performed with untreated cells, and the positive control (CT+) used hydrogen peroxide. The data for MTT and apoptosis were submitted to analysis of variance and Bonferroni's posttest (p < 0.05), and the data for the comet assay analysis, to the Kruskal-Wallis and Dunn tests (p < 0.05). The MTT test showed no significant difference among the materials in 2 mg/mL and 10 mg/mL concentrations. CSCR3 showed lower cell viability at 10 mg/mL. Only CSC showed lower cell viability at 50 mg/mL. CSCR1, CSCR2 and CSCR3 showed a higher percentage of initial apoptosis than the control in the apoptosis test, after 24 hours exposure. The same cements showed no genotoxicity in the concentration of 2 mg/mL, with the comet assay. CSC and CSCR2 were also not genotoxic at 10 mg/mL. All experimental materials showed viability with MTT. CSC and CSCR2 presented a better response to apoptosis and genotoxicity evaluation in the 10 mg/mL concentration, and demonstrated a considerable potential for use as reparative materials.

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Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

Abstract: The proposed materials, especially when associated with ZrO(2), are potential materials for use as alternatives to MTA.

Cited by 47 publications

References 43 publications

Examination of Calcium Silicate Cements with Low-Viscosity Methyl Cellulose or Hydroxypropyl Cellulose Additive

Examination of Calcium Silicate Cements with Low-Viscosity Methyl Cellulose or Hydroxypropyl Cellulose Additive

In vitro biocompatibility of nanostructured endodontic materials using SCAP cells

Cytotoxicity and genotoxicity of calcium silicate-based cements on an osteoblast lineage

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