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X-Ray Diffraction Analysis of Various Calcium Silicate-Based Materials

  • An, So-Youn (Department of Pediatric Dentristry & Wonkwang Bone Regeneration Research Institute, College of Dentistry, Wonkwang University) ;
  • Lee, Myung-Jin (Department of Dental Hygiene, Baekseok University) ;
  • Shim, Youn-Soo (Department of Dental Hygiene, Sunmoon University)
  • 투고 : 2022.09.01
  • 심사 : 2022.09.19
  • 발행 : 2022.09.30

초록

Background: The purpose of this study was to evaluate the composition of the crystal phases of various calcium silicate-based materials (CSMs): ProRoot white MTA (mineral trioxide aggregate) (WMTA), Ortho MTA (OM), Endocem MTA (EM), Retro MTA (RM), Endocem Zr (EN-Z), BiodentineTM (BD), EZ-sealTM (EZ), and OrthoMTA III (OM3). Methods: In a sample holder, 5 g of the powder sample was placed and the top surface of the material was packed flat using a sterilized glass slide. The prepared slides were mounted on an X-ray diffraction (XRD) instrument (D8 Advance; Bruker AXS GmbH, Germany). The X-ray beam 2θ angle range was set at 10~90° and scanned at 1.2° per minute. The Cu X-ray source set to operate at 40 kV and 40 mA in the continuous mode. The peaks in the diffraction pattern of each sample were analyzed using the software Diffrac (version 2.1). Then, the peaks were compared and matched with those of standard materials in the corresponding Powder Diffraction File (PDF-2, JCPDS International Center for Diffraction Data). A powder samples of the materials were analyzed using XRD and the peaks in diffraction pattern were compared to the Powder Diffraction File data. Results: Eight CSMs showed a similar diffraction pattern because their main component was calcium silicate. Eight CSMs showed similar diffraction peaks because calcium silicate was their main component. Two components were observed to have been added as radiopacifiers: bismuth oxide was detected in WMTA, OM, and EM while zirconium oxide was detected in RM, EN-Z, BD, EZ, and OM3. Unusual patterns were detected for the new material, OM3, which had strong peaks at low angles. Conclusion: It was caused by the presence of Brushite, which is believed to have resulted in crystal growth in a particular direction for a specific purpose.

키워드

과제정보

This work was supported by the Sunmoon University University Research Grant of 2022.

참고문헌

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