title: Evaluation of pulpal response of deciduous teeth after direct pulp capping with bioactive glass and mineral trioxide aggregate.
abstract: OBJECTIVE
  The aim of this study was to evaluate the pulpal response of primary teeth after direct pulp capping (DPC) with two biocompatible materials namely mineral trioxide aggregate (MTA) and bioactive glass (BAG).
  
  
  METHODS
  This study was a randomized clinical trial.
  
  
  METHODS
  A total of 22 healthy primary canine teeth scheduled for extraction for orthodontic reasons were selected. The teeth were divided into two groups of 11 and underwent DPC. The exposure sites were randomly capped with MTA or BAG in the two groups. After 2 months, the teeth were extracted and prepared for histopathologic evaluation.
  
  
  METHODS
  The data were analyzed using Fisher's exact test.
  
  
  RESULTS
  In the BAG group, inflammation was seen in three patients; internal resorption and abscess were not seen at all. In the MTA group, inflammation was seen in one patient and internal resorption and abscess were not seen in any patient. Fisher's exact test showed no significant difference between the two groups (P > 0.05). Dentinal bridge formation was noted in five patients in the BAG group and six patients in the MTA group. No significant difference was observed between the BAG and MTA groups using Chi-square analysis (P = 0.67).
  
  
  CONCLUSIONS
  Based on the results of this study, MTA and BAG can be used for DPC of primary teeth.
authors.affiliation: Department of Pediatric Dentistry, Dental School, Shahed University, Tehran, Iran.
authors.forename: Roza
authors.initials: R
authors.lastname: Haghgoo
authors.affiliation: Department of Pediatric Dentistry, Dental School, Shahed University, Tehran, Iran.
authors.forename: Motahare
authors.initials: M
authors.lastname: Ahmadvand
keywords: Deciduous tooth; dental pulp capping; mineral trioxide aggregate