title: Mineral trioxide aggregate (MTA) and calcium hydroxide as pulp-capping agents in human teeth: a preliminary report.
abstract: OBJECTIVE
  To compare mineral trioxide aggregate (MTA) with calcium hydroxide when used as pulp-capping materials in human teeth.
  
  
  METHODS
  Eleven pairs of maxillary third molars in subjects between 20 and 25 years of age were subjected to mechanical pulp exposure. The exposed pulps were capped with MTA or calcium hydroxide, covered with ZOE and restored with amalgam. A total of 14 teeth were extracted after periods of 1 week (two molars) 2 months (three molars), 3 months (five molars), 4 months (two molars) and 6 months (two molars).
  
  
  RESULTS
  Histological evaluation demonstrated less inflammation, hyperaemia and necrosis plus thicker dentinal bridge and more frequent odontoblastic layer formation with MTA than calcium hydroxide.
  
  
  CONCLUSIONS
  Although the results favour the use of MTA, more studies with larger samples and a longer follow up are suggested.
authors.affiliation: Department of Endodontics, Azad University School of Dentistry, Tehran, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Aeinehchi
authors.forename: B
authors.initials: B
authors.lastname: Eslami
authors.forename: M
authors.initials: M
authors.lastname: Ghanbariha
authors.forename: A S
authors.initials: AS
authors.lastname: Saffar
mesh_terms: D000328:Adult; D017607:Aluminum Compounds; D017610:Calcium Compounds; D002126:Calcium Hydroxide; D003785:Dental Pulp Capping / Q000379:methods*; D003809:Dentin, Secondary / Q000254:growth & development / Q000378:metabolism; D004338:Drug Combinations; D006801:Humans; D008963:Molar; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide