Dental Materials
Volume 24, Issue 1 , Pages 74-82, January 2008

Characterization of Ca3SiO5/CaCl2 composite cement for dental application

  • Xiaohong Wang

      Affiliations

    • Department of Oral Pathology, Stomatological College, JiLin University, 418 Ziqiang Street, Changchun City, Jilin Province 130041, PR China
    • Biomaterials & Tissue Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China
    • ,
  • Hongchen Sun

      Affiliations

    • Department of Oral Pathology, Stomatological College, JiLin University, 418 Ziqiang Street, Changchun City, Jilin Province 130041, PR China
    • Corresponding Author InformationCorresponding author. Tel.: +86 431 88913506.
    • ,
  • Jiang Chang

      Affiliations

    • Biomaterials & Tissue Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China
    • Corresponding Author InformationCorresponding author. Tel.: +86 21 52412804; fax: +86 21 52413903.

Received 23 September 2006; received in revised form 19 January 2007; accepted 7 February 2007.

Abstract 

Objectives

The purpose of this study was to investigate the effect of CaCl2 on the setting time, pH values and compressive strength of tricalcium silicate, and the in vitro bioactivity and compatibility of Ca3SiO5/CaCl2 composite paste was also studied to explore the possibility for using as a root canal filling material.

Methods

Composite cements were obtained by mixing Ca3SiO5 and different amounts of CaCl2 (0, 5%, 10% and 15%) with deionized water as liquid phase. The composite cement and pure tricalcium silicate were compared for setting time, pH value, compressive strength, in vitro bioactivity and compatibility.

Results

With the addition of CaCl2 from 0% to 15%, the initial setting time and final setting time decreased obviously from 90 to 50min and from 180 to 90min, respectively. The compressive strength of the Ca3SiO5/CaCl2 composite cement after setting for 7 days increased obviously from 5.28 to 23.46MPa when the content of CaCl2 increased from 0% to 10%. Furthermore, the paste with up to 15% of CaCl2 showed good ability to induce the formation of hydroxyapatite (HA), and the dissolution extracts of the Ca3SiO5/CaCl2 composite paste also have a stimulatory effect on L929 cell proliferation in a certain concentration range.

Significance

The results indicated that the Ca3SiO5/CaCl2 composite cement had good self-setting properties, bioactivity and compatibility, and may be used as a novel root canal filling material.

Keywords: Tricalcium silicate, Calcium chloride, Bioactivity, Root canal

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PII: S0109-5641(07)00052-8

doi:10.1016/j.dental.2007.02.006

Dental Materials
Volume 24, Issue 1 , Pages 74-82, January 2008

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