The effect of human blood on the setting and surface micro-hardness of calcium silicate cements

• Published in: Clinical oral investigations 2016-11, Vol.20 (8), p.1997-2005
• Main Authors: Song, Minju, Yue, Wonyoung, Kim, Soyeon, Kim, Wooksung, Kim, Yaelim, Kim, Jeong-Woong, Kim, Euiseong
• Format: Article
• Language: English
• Subjects: Aluminum Compounds; Blood; Blood groups; Calcium; Calcium Compounds; Contamination; Crystals; Dental cement; Dentistry; Diffraction; Drug Combinations; Electron microscopy; Hardness Tests; Humans; Medicine; Microscopy, Electron, Scanning; Molds & molding; Original Article; Oxides; Polyethylene; Root Canal Filling Materials - chemistry; Scanning electron microscopy; Silicate Cement - chemistry; Silicates; Sodium Chloride; Storage conditions; Surface Properties; X-Ray Diffraction
• ISSN: 1432-6981; 1436-3771
• DOI: 10.1007/s00784-015-1693-z

Objectives The purpose of the present study was to evaluate the effects of human blood on the setting and microhardness of calcium silicate cements. Materials and methods Three types of silicate-based cements were used: ProRoot MTA (PMTA), OrthoMTA (OMTA), and RetroMTA (RMTA). Mixed cement was placed into polyethylene molds with lengths of 2 and 4 mm. After storage for 4 days under three different storage conditions, i.e., saline, saline after 5 min of human blood, and human blood, the polyethylene molds were removed. With the specimens set, the surface microhardness was measured using a Vickers microhardness tester, crystalline structure was analyzed with X-ray diffraction (XRD), and the surface characteristics were examined with scanning electron microscopy (SEM). Results All specimens of 4 mm in length were set with all materials, and the blood groups exhibited lower microhardnesses than did the saline groups ( p