title: Comparative chemical study of MTA and Portland cements.
abstract: Portland cement has been analyzed and compared to mineral trioxide aggregate (MTA) because of their chemical similarity. The possibility of using this material as a less expensive alternative to MTA in dental practice should be considered. In view of this, the present study compared the components of a Portland cement (Votoran) to two commercial brands of MTA (Pro-Root and MTA-Angelus). Twelve specimens of each material were fabricated and examined by scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) to obtain their percentage of chemical elements. The means of the chemical elements found in each material was compared by descriptive statistics. Bismuth was present only in MTA cements to provide radiopacity. In conclusion, the tested cements have similar components, which supports, as far as composition is concerned, the possible clinical use of Portland as an option to MTA.
authors.affiliation: Department of Surgery, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil. mogerhardt@pucrs.br
authors.forename: Marília Gerhardt de
authors.initials: MG
authors.lastname: Oliveira
authors.forename: Cristina Braga
authors.initials: CB
authors.lastname: Xavier
authors.forename: Flávio Fernando
authors.initials: FF
authors.lastname: Demarco
authors.forename: Antônio Luis Barbosa
authors.initials: AL
authors.lastname: Pinheiro
authors.forename: Aline Tempel
authors.initials: AT
authors.lastname: Costa
authors.forename: Daniel Humberto
authors.initials: DH
authors.lastname: Pozza
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry* / Q000191:economics; D001729:Bismuth / Q000032:analysis / Q000737:chemistry / Q000191:economics; D017610:Calcium Compounds / Q000737:chemistry* / Q000191:economics; D003738:Dental Cements / Q000737:chemistry* / Q000191:economics; D004338:Drug Combinations; D008855:Microscopy, Electron, Scanning / Q000379:methods; D010087:Oxides / Q000737:chemistry* / Q000191:economics; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000191:economics; D017640:Silicates / Q000737:chemistry* / Q000191:economics; D046590:Spectroscopy, Electron Energy-Loss / Q000379:methods
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003738:Dental Cements; D004338:Drug Combinations; C475480:MTA-Angelus; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; C033301:bismuth oxide; D001729:Bismuth