The Journal of the Korean dental association (대한치과의사협회지)

The Korean Dental Association (대한치과의사협회)
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REVIEW ARTICLE - Chemical and physical properties and biocompatibility of MTA

MTA의 물리화학적 성질 및 생체친화성에 대한 연구

  • Chang, Seok-Woo (Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Oh, Tae-Seok (Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Yoo, Hyun-Mi (Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Park, Dong-Sung (Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Bae, Kwang-Shik (Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry) ;
  • Kum, Kee-Yeon (Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry)
  • 장석우 (성균관대학교 의과대학 삼성서울병원 치과진료부 보존과) ;
  • 오태석 (성균관대학교 의과대학 삼성서울병원 치과진료부 보존과) ;
  • 유현미 (성균관대학교 의과대학 삼성서울병원 치과진료부 보존과) ;
  • 박동성 (성균관대학교 의과대학 삼성서울병원 치과진료부 보존과) ;
  • 배광식 (서울대학교 대학원 치의학과 치과보존학교실, 치의학연구소) ;
  • 금기연 (서울대학교 대학원 치의학과 치과보존학교실, 치의학연구소)
  • Received : 2012.02.08
  • Accepted : 2012.02.23
  • Published : 2012.03.01
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Abstract

Mineral trioxide aggregate (MTA) is mainly composed of lime and silica. Its four major phases are tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracaclcium aluminoferrite. MTA has relatively long initial setting time (2h 45m) and various additives can be added to reduce setting time. Compressive strength of MTA increases with time and reaches 100 MPa after 28 days. MTA has high pH of 9-12.5 because of the formation of calcium hydroxide during its hydration reaction. MTA has superior sealing ability to amalgam and IRM when it is used in perforation repair or root end filling. MTA is safe in cytotoxicity and genotoxicity and have potential to promote pulpal and periapical hard tissue formation.

Keywords

References

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