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

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Toshiaki Baba ◽  
Yasuhisa Tsujimoto
Keyword(s):  
Calcium Ion ◽  
Calcium Silicate ◽  
Zirconium Oxide ◽  
Setting Time ◽  
Mineral Trioxide Aggregate ◽  
Methyl Cellulose ◽  
Hydroxypropyl Cellulose ◽  
Ion Release ◽  
Low Viscosity ◽  
Calcium Silicate Cements

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.

scholarly journals Evaluation of Physicochemical Properties of New Calcium Silicate-Based Sealer

2018 ◽  
Vol 29 (6) ◽  
pp. 536-540 ◽  
Author(s):  
Aline Teixeira Mendes ◽  
Paula Barcellos da Silva ◽  
Bruna Barcelos Só ◽  
Lina Naomi Hashizume ◽  
Rodrigo Ricci Vivan ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Calcium Ion ◽  
Calcium Silicate ◽  
Calcium Release ◽  
Setting Time ◽  
Porto Alegre ◽  
Ion Release ◽  
Ph Values ◽  
Time Flow ◽  
Ah Plus

Abstract This study aimed to evaluate the physicochemical properties of a calcium silicate-based sealer (Sealer Plus BC; MK Life, Porto Alegre, Brazil) compared with an epoxy-resin sealer (AH Plus; Dentsply DeTrey GmbH, Konstanz, Germany). Initial and final setting time was assessed based on ISO 6876:2012 and ASTM C266:03. Calcium ion release and pH were evaluated by filling polyethylene tubes with sealers and then immersing them in 10 mL of deionized water. Following experimental periods of 1, 24, 72 and 168 hours, the samples were measured regarding pH and calcium ion release with a pH meter and a colorimetric spectrophotometer, respectively. The flow was examined based on ISO 6876:2012. Rings of 10 mm in diameter with 1 mm thickness were prepared to analyze the radiopacity (ISO 6876:2012 and ADA n.57) and solubility (ISO 6876:2012). The data were analyzed by variance analysis, Student-T and Tukey tests (p<0.05). The calcium ion release and pH values were significantly higher for the Sealer Plus BC compared with the AH Plus (p<0.05). Lower setting time, flow and radiopacity were observed for the bioceramic sealer than for AH Plus (p<0.05). Sealer Plus BC exhibited higher solubility compared with AH Plus (p<0.05). Sealer Plus BC showed physicochemical properties as setting time, pH, calcium release, flow, and radiopacity following the required standards, but higher solubility than the minimum values required by ISO 6876:2012.

scholarly journals Effect of Silver Nanoparticles on Physicochemical and Antibacterial Properties of Calcium Silicate Cements

2016 ◽  
Vol 27 (5) ◽  
pp. 508-514 ◽  
Author(s):  
Fernando Vazquez-Garcia ◽  
◽  
Mário Tanomaru-Filho ◽  
Gisselle Moraima Chávez-Andrade ◽  
Roberta Bosso-Martelo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silver Nanoparticles ◽  
Compressive Strength ◽  
Antibacterial Activity ◽  
Calcium Silicate ◽  
Setting Time ◽  
Antibacterial Properties ◽  
Mineral Trioxide Aggregate ◽  
Biological Properties ◽  
Calcium Silicate Cements

Abstract Mineral trioxide aggregate (MTA) and Portland cement (PC) are calcium silicate cements. They have similar physicochemical, mechanical and biological properties. The addition of zirconium oxide (ZrO2) to PC provides radiopacity. Silver nanoparticles (AgNPs) may improve some properties of cements. The aim of this study was to evaluate the effect of AgNPs on physicochemical/mechanical properties and antibacterial activity of white MTA (WMTA) and PC associated with ZrO2. The following materials were evaluated: WMTA; PC 70% + ZrO2 30%; WMTA+ AgNPs; and PC 70% + ZrO2 30% + AgNPs. The study evaluated radiopacity, setting time, pH, compressive strength and solubility. For radiopacity analysis, radiographs were made alongside an aluminum (Al) step wedge. To evaluate the antibacterial activity, direct contact test was performed on planktonic cells and Enterococcus faecalis biofilm induced on bovine root dentin for 14 days. The experimental periods were 5 and 15 h. Data were obtained as CFU mL-1. The obtained data were submitted to ANOVA and Tukey tests (p<0.05). The addition of AgNPs to WMTA increased the pH, lowered the solubility and the initial and final setting times. The addition of AgNPs to PC/ZrO2 maintained the pH, lowered the solubility, and increased the setting time and compressive strength. The radiopacity of all materials was higher than 4 mmAl. The addition of AgNPs promoted an increase in antibacterial activity for calcium silicate cements and favored the physicochemical and mechanical properties of the materials.

Influence of powder-to-water ratio on radiopacity, setting time, pH, calcium ion release and a micro-CT volumetric solubility of white mineral trioxide aggregate

2013 ◽  
Vol 47 (2) ◽  
pp. 120-126 ◽  
Author(s):  
B. C. Cavenago ◽  
T. C. Pereira ◽  
M. A. H. Duarte ◽  
R. Ordinola-Zapata ◽  
M. A. Marciano ◽  
...  
Keyword(s):  
Calcium Ion ◽  
Setting Time ◽  
Mineral Trioxide Aggregate ◽  
Micro Ct ◽  
Ion Release ◽  
Water Ratio ◽  
White Mineral

pH, Calcium Ion Release, and Setting Time of an Experimental Mineral Trioxide Aggregate–based Root Canal Sealer

2011 ◽  
Vol 37 (6) ◽  
pp. 844-846 ◽  
Author(s):  
Santiago Massi ◽  
Mário Tanomaru-Filho ◽  
Guilherme Ferreira Silva ◽  
Marco Antonio Hungaro Duarte ◽  
Larissa Tercilia Grizzo ◽  
...  
Keyword(s):  
Root Canal ◽  
Calcium Ion ◽  
Setting Time ◽  
Mineral Trioxide Aggregate ◽  
Root Canal Sealer ◽  
Ion Release

Evaluation of pH and Calcium Ion Release of a Dual-cure Bisphenol A Ethoxylate Dimethacrylate/Mineral Trioxide Aggregate–based Root-end Filling Material

2013 ◽  
Vol 39 (12) ◽  
pp. 1603-1606 ◽  
Author(s):  
Giane da Silva Linhares ◽  
Maximiliano Sérgio Cenci ◽  
César Blaas Knabach ◽  
Camila Mizette Oliz ◽  
Mariana Antunes Vieira ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Calcium Ion ◽  
Mineral Trioxide Aggregate ◽  
Filling Material ◽  
Ion Release

The Use of a Setting Accelerator and Its Effect on pH and Calcium Ion Release of Mineral Trioxide Aggregate and White Portland Cement

2006 ◽  
Vol 32 (12) ◽  
pp. 1194-1197 ◽  
Author(s):  
E ANTUNESBORTOLUZZI ◽  
N JUAREZBROON ◽  
M ANTONIOHUNGARODUARTE ◽  
A DEOLIVEIRADEMARCHI ◽  
C MONTEIROBRAMANTE
Keyword(s):  
Portland Cement ◽  
Calcium Ion ◽  
Mineral Trioxide Aggregate ◽  
Ion Release ◽  
White Portland Cement

scholarly journals Solubility of Calcium Silicate Based Cements – a Comparative Study

2020 ◽  
Vol 47 (2) ◽  
pp. 27-29
Author(s):  
Y. Kouzmanova ◽  
I. Dimitrova
Keyword(s):  
Treatment Failure ◽  
Physicochemical Properties ◽  
Calcium Silicate ◽  
Mineral Trioxide Aggregate ◽  
Distilled Water ◽  
Tissue Fluid ◽  
Before And After ◽  
Calcium Silicate Cements ◽  
Low Solubility ◽  
As Solubility

AbstractCalcium silicate based cement is a group of biomaterials, based on Portland cement. Its physicochemical properties such as solubility are of the utmost importance. It should have low solubility in tissue fluid since the dissolution of materials may lead to treatment failure.The aim of this study is to evaluate the solubility of five calcium silicate cements after being placed in distilled water for a period of 28 days.Material and methods: The purpose of this study was to compare solubility of a four new calcium silicate-based cements, such as: gray MTA Angelus; white MTA Angelus; BioAggregate and Biodentine with conventional mineral trioxide aggregate White ProRoot. Solubility is evaluated using standardized samples of materials, which are weighed before and after 28-day immersion in distilled water.Results: The lowest solubility is found at White ProRoot and the significantly highest solubility – at Biodentine.

scholarly journals Evaluation of pH, Calcium Ion Release, and Dimensional Stability of an Experimental Silver Nanoparticle-Incorporated Calcium Silicate-Based Cement

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Teena Sheethal Dsouza ◽  
Aditya Shetty ◽  
Neevan Dsouza
Keyword(s):  
Physicochemical Properties ◽  
Dimensional Stability ◽  
Calcium Ion ◽  
Calcium Silicate ◽  
Filling Material ◽  
Ion Release ◽  
Filling Materials ◽  
Sample Test ◽  
Initial Ph ◽  
Experimental Group

An experimental calcium silicate-based root-end filling material incorporated with silver nanoparticles intended for use in periapical surgeries was developed with the purpose to overcome the drawbacks of existing materials and to satisfy the ideal requirements of root-end filling materials. This study was designed to evaluate the physicochemical properties, pH, calcium ion release, and dimensional stability of the experimental cement, and compare the results with commercially available ProRoot MTA (Dentsply). An independent sample test was used to analyze the data. Mean initial pH (immediately after mixing) of the experimental cement was 10.42 ± 0.04 which was higher than that of MTA. However, there was a significant increase in pH of MTA at 1 day, 2 days, and 7 days. Presence of calcium chloride favored the release of calcium ions which was significantly increased in the experimental group at 24 hours. At the end of 30 days, MTA showed a significant expansion when compared to the experimental cement p < 0.001 . In conclusion, the experimental nanoparticle-incorporated calcium silicate-based cement showed clinically acceptable physicochemical properties.

Sign in / Sign up

Export Citation Format

Share Document