여러 종류 MTA 변색에 관한 논문, MTA discoloration

MTA변색 비교 논문 : 비스무스옥사이드를 조영제로 사용하는 Proroot MTA나 OrthoMTA에 비해 Ziroconia를 조영제로 사용하는 Endocem ZR, RetroMTA가 변색이 덜 하다.

 

OrthoMTA가 과연 이상적인 근관충전재일까요????

 

J Endod. 2015 May;41(5):737-41. doi: 10.1016/j.joen.2015.01.019. Epub 2015 Feb 27.

Color Changes of Teeth after Treatment with Various Mineral Trioxide Aggregate-based Materials: An Ex Vivo Study.

Kang SH¹, Shin YS¹, Lee HS¹, Kim SO², Shin Y³, Jung IY⁴, Song JS⁵.

Author information

• ¹Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
• ²Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea; Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
• ³Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
• ⁴Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea; Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
• ⁵Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Seoul, Republic of Korea; Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Republic of Korea. Electronic address: songjs@yuhs.ac.

Abstract

INTRODUCTION:

Mineral trioxide aggregate (MTA) materials have been used for many years as a pulp therapy material. The most widely used product, ProRoot MTA (Dentsply, Tulsa, OK), has a major drawback in that it causes tooth discoloration. Alternatives have recently been developed such as ENDOCEM Zr (MARUCHI, Wonju, Korea) and RetroMTA (BioMTA, Seoul, Korea). The purpose of this study was to compare the discoloration of these various MTA-based materials.

METHODS:

Discoloration of discs prepared from 4 different MTA-based materials (ProRoot MTA, MTA Angelus [Angelus, Londrina, PR, Brazil], ENDOCEM Zr, and RetroMTA) were observed at 15 and 30 minutes after exposure to light at an intensity of 1000 mA/cm(2). In a tooth model, 12 premolars were used per each group to retrofill the pulp chamber with MTA-based materials. The degree of discoloration was measured over a 16-week period using a digital spectrophotometer.

RESULTS:

Distinct color changes were observed for discs made from ProRoot MTA and MTA Angelus, but no clear change was observed for those made from either ENDOCEM Zr or RetroMTA. In the tooth model, more distinct, time-dependent color changes were observed for teeth filled with ProRoot MTA and MTA Angelus than for those filled with ENDOCEM Zr and RetroMTA.

CONCLUSIONS:

Less discoloration was observed with ENDOCEM Zr and RetroMTA (which contain zirconium oxide) than with ProRoot MTA and MTA Angelus (which contain bismuth oxide) in both of the test models used.

Copyright © 2015 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

KEYWORDS:

Bismuth oxide; ENDOCEM Zr; RetroMTA; discoloration; mineral trioxide aggregate; zirconium oxide