Restorative Dentistry & Endodontics

Research Article

Cytotoxicity and physical properties of tricalcium silicate-based endodontic materials: Young-Eun Jang, Bin-Na Lee, Jeong-Tae Koh, Yeong-Joon Park, Nam-Eok Joo, Hoon-Sang Chang, In-Nam Hwang, Won-Mann Oh, Yun-Chan Hwang; Restor Dent Endod 2014;39(2):89-94. Published online March 21, 2014; DOI: https://doi.org/10.5395/rde.2014.39.2.89

Objectives

The aim of this study was to evaluate the cytotoxicity, setting time and compressive strength of MTA and two novel tricalcium silicate-based endodontic materials, Bioaggregate (BA) and Biodentine (BD).

Materials and Methods

Cytotoxicity was evaluated by using a 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-5-((phenylamino)carbonyl)-2H-tetrazolium hydroxide (XTT) assay. Measurements of 9 heavy metals (arsenic, cadmium, chromium, copper, iron, lead, manganese, nickel, and zinc) were performed by inductively coupled plasma-mass spectrometry (ICP-MS) of leachates obtained by soaking the materials in distilled water. Setting time and compressive strength tests were performed following ISO requirements.

Results

BA had comparable cell viability to MTA, whereas the cell viability of BD was significantly lower than that of MTA. The ICP-MS analysis revealed that BD released significantly higher amount of 5 heavy metals (arsenic, copper, iron, manganese, and zinc) than MTA and BA. The setting time of BD was significantly shorter than that of MTA and BA, and the compressive strength of BA was significantly lower than that of MTA and BD.

Conclusions

BA and BD were biocompatible, and they did not show any cytotoxic effects on human periodontal ligament fibroblasts. BA showed comparable cytotoxicity to MTA but inferior physical properties. BD had somewhat higher cytotoxicity but superior physical properties than MTA.

Citations

Citations to this article as recorded by

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Basic Researchs

Physical properties of novel composite using Portland cement for retro-filling material: Sang-Jin Lee, Ok-In Cho, Jiwan Yum, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim; J Korean Acad Conserv Dent 2010;35(6):445-452. Published online November 30, 2010; DOI: https://doi.org/10.5395/JKACD.2010.35.6.445

Abstract PDF PubReader ePub

Objectives

The aim of this study was to compare apical sealing ability and physical properties of MTA, MTA - AH-plus mixture (AMTA) and experimental Portland cement - Epoxy resin mixture (EPPC) for a development of a novel retro-filling material.

Materials and Methods

Forty-nine extracted roots were instrumented and filled with gutta-percha. Apical root was resected at 3 mm and the retro-filling cavity was prepared for 3 mm depth. Roots were randomly divided into 3 groups of 15 roots each. The retro-filling was done using MTA, AMTA, and EPPC as the groups divided. Four roots were used as control groups. After setting in humid condition for 24 hours, the roots were immersed in 1% methylene blue dye solution for 72 hours to test the apical leakage. After immersion, the roots were vertically sectioned and photos were taken to evaluate microleakage. Setting times were measured with Vicat apparatus and digital radiographs were taken to evaluate aluminum equivalent thickness using aluminum step wedge. The results of microleakage and setting time were compared between groups using one-way ANOVA and Scheffe's post-hoc comparison at the significance level of 95%.

Results

AMTA and EPPC showed less microleakage than MTA group (p < 0.05). AMTA showed the highest radio-opacity than other groups and the novel EPPC showed 5 mm aluminum thickness radio-opacity. EPPC showed the shortest initial and final setting times than other groups while the MTA showed the longest (p < 0.05).

Conclusions

Under the condition of this study, the novel composite using Portland cement-Epoxy resin mixture may useful for retro-filling with the properties of favorable leakage resistance, radio-opacity and short setting time.

Citations

Citations to this article as recorded by

Comparison of Setting Time, Compressive Strength, Solubility, and pH of Four Kinds of MTA
Jing-Ling Che, Jae-Hwan Kim, Seon-Mi Kim, Nam-ki Choi, Hyun-Joo Moon, Moon-Jin Hwang, Ho-Jun Song, Yeong-Joon Park
Korean Journal of Dental Materials.2016; 43(1): 61. CrossRef
Biological Effects and Washout Resistance of a Newly Developed Fast-setting Pozzolan Cement
Yoorina Choi, Su-Jung Park, Seoung-Hoon Lee, Yun-Chan Hwang, Mi-Kyung Yu, Kyung-San Min
Journal of Endodontics.2013; 39(4): 467. CrossRef

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Physical and chemical properties of experimental mixture of mineral trioxide aggregate and glass ionomer cement: Yu-Na Jeong, So-Young Yang, Bum-Jun Park, Yeong-Joon Park, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh; J Korean Acad Conserv Dent 2010;35(5):344-352. Published online September 30, 2010; DOI: https://doi.org/10.5395/JKACD.2010.35.5.344

Abstract PDF PubReader ePub

Objectives

The purpose of this study was to determine the setting time, compressive strength, solubility, and pH of mineral trioxide aggregate (MTA) mixed with glass ionomer cement (GIC) and to compare these properties with those of MTA, GIC, IRM, and SuperEBA.

Materials and Methods

Setting time, compressive strength, and solubility were determined according to the ISO 9917 or 6876 method. The pH of the test materials was determined using a pH meter with specified electrode for solid specimen.

Results

The setting time of MTA mixed with GIC was significantly shorter than that of MTA. Compressive strength of MTA mixed with GIC was significantly lower than that of other materials at all time points for 7 days. Solubility of 1 : 1 and 2 : 1 specimen from MTA mixed with GIC was significantly higher than that of other materials. Solubility of 1 : 2 specimen was similar to that of MTA. The pH of MTA mixed with GIC was 2-4 immediately after mixing and increased to 5-7 after 1 day.

Conclusions

The setting time of MTA mixed with GIC was improved compared with MTA. However, other properties such as compressive strength and pH proved to be inferior to those of MTA. To be clinically feasible, further investigation is necessary to find the proper mixing ratio in order to improve the drawbacks of MTA without impairing the pre-existing advantages and to assess the biocompatibility.

Citations

Citations to this article as recorded by

Comparison of Setting Time, Compressive Strength, Solubility, and pH of Four Kinds of MTA
Jing-Ling Che, Jae-Hwan Kim, Seon-Mi Kim, Nam-ki Choi, Hyun-Joo Moon, Moon-Jin Hwang, Ho-Jun Song, Yeong-Joon Park
Korean Journal of Dental Materials.2016; 43(1): 61. CrossRef
Do conventional glass ionomer cements release more fluoride than resin-modified glass ionomer cements?
Maria Fernanda Costa Cabral, Roberto Luiz de Menezes Martinho, Manoel Valcácio Guedes-Neto, Maria Augusta Bessa Rebelo, Danielson Guedes Pontes, Flávia Cohen-Carneiro
Restorative Dentistry & Endodontics.2015; 40(3): 209. CrossRef
Synthesis and Properties of a New Dental Material Based on Nano‐Structured Highly Active Calcium Silicates and Calcium Carbonates
Vukoman Jokanović, Božana Čolović, Miodrag Mitrić, Dejan Marković, Bojana Ćetenović
International Journal of Applied Ceramic Technology.2014; 11(1): 57. CrossRef
Evaluation of the effect of blood contamination on the compressive strength of MTA modified with hydration accelerators
Kaveh Oloomi, Eshaghali Saberi, Hadi Mokhtari, Hamid Reza Mokhtari Zonouzi, Ali Nosrat, Mohammad Hossein Nekoofar, Paul Michael Howell Dummer
Restorative Dentistry & Endodontics.2013; 38(3): 128. CrossRef
Endodontic management of a maxillary lateral incisor with dens invaginatus and external root irregularity using cone-beam computed tomography
Young-Jun Lim, Sook-Hyun Nam, Sung-Ho Jung, Dong-Ryul Shin, Su-Jung Shin, Kyung-San Min
Restorative Dentistry & Endodontics.2012; 37(1): 50. CrossRef

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Original Article

A study on the material properties of various composite resins for core build-up: Soo-Il Shin, Dong-Hoon Shin; J Korean Acad Conserv Dent 2004;29(2):191-199. Published online March 31, 2004; DOI: https://doi.org/10.5395/JKACD.2004.29.2.191

Abstract PDF PubReader ePub

The purposes of this study were to estimate the material properties of the recently developed domestic composite resins for core filling material (Chemical, Dual A, Dual B; Vericom, Korea) and to compare them with other marketed foreign products (CorePaste, Den-Mat, USA; Ti-Core, Essential Dental Systems, USA; Support, SCI-Pharm, USA). Six assessments were made; working time, setting time, depth of polymerization, flexural strength, bonding strength, and marginal leakage. All items were compared to ISO standards.

All domestic products satisfied the minimum requirements from ISO standards (working time: above 90 seconds, setting time: within 5 minutes), and showed significantly higher flexural strength than Core Paste. Dual A and B could, especially, reduce the setting time to 60 seconds when cured with 600 mW/cm² light intensity. All experimental materials showed 6 mm depth of polymerization.

Bond strengths of Ti-Core and Dual B materials were significantly higher than the other materials. Furthermore, three domestic products and Ti-Core could reduce the microleakage effectively.

Citations

Citations to this article as recorded by

Effect of surface treatments of fiber posts on bond strength to composite resin cores
Hye-Jo Keum, Hyun-Mi Yoo
Journal of Korean Academy of Conservative Dentistry.2010; 35(3): 173. CrossRef

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