REVIEW ARTICLE - Chemical and physical properties and biocompatibility of MTA

Chang,  Seok-Woo; Oh,  Tae-Seok; Yoo,  Hyun-Mi; Park,  Dong-Sung; Bae,  Kwang-Shik; Kum,  Kee-Yeon

J Korean Dent Assoc > Volume 50(3); 2012 > Article

The Journal of The Korean Dental Association 2012;50(3):148-154.
Published online March 31, 2012.

MTA의 물리화학적 성질 및 생체친화성에 대한 연구

장석우¹, 오태석², 유현미³, 박동성⁴, 배광식⁵, 금기연⁶

^¹성균관대학교 의과대학 삼성서울병원 치과진료부 보존과
^²성균관대학교 의과대학 삼성서울병원 치과진료부 보존과
^³성균관대학교 의과대학 삼성서울병원 치과진료부 보존과
^⁴성균관대학교 의과대학 삼성서울병원 치과진료부 보존과
^⁵서울대학교 대학원 치의학과 치과보존학교실, 치의학연구소
^⁶서울대학교 대학원 치의학과 치과보존학교실, 치의학연구소

REVIEW ARTICLE - Chemical and physical properties and biocompatibility of MTA

Seok-Woo Chang¹, Tae-Seok Oh², Hyun-Mi Yoo³, Dong-Sung Park⁴, Kwang-Shik Bae⁵, Kee-Yeon Kum⁶

¹Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine
²Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine
³Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine
⁴Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine
⁵Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry
⁶Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry

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.

Key Words: biocompatibility;compressive strength;Mineral Trioxide Aggregate (MTA);pH;sealing ability;setting time;