title: Comparison of pulp response to mineral trioxide aggregate and a bioceramic paste in partial pulpotomy of sound human premolars: a randomized controlled trial.
abstract: OBJECTIVE
  This randomized clinical trial evaluated clinical sign/symptoms as well as histological pulp reactions in terms of inflammation and mineralized bridge formation after partial pulpotomy of sound human premolars and placement of a bioceramic paste (iRoot BP) or tooth-colored ProRoot MTA as pulp-covering biomaterials.
  
  
  METHODS
  Twenty-four human sound premolars were randomly allocated into two experimental groups (n = 12) treated either with iRoot BP or MTA subsequent to partial pulpotomy. Six weeks after treatment, clinical sign/symptoms and radiographic changes were evaluated. The teeth were then extracted and examined histologically for inflammatory status of the pulp, formation of hard tissue bridge and appearance of the bridge. In terms of pulp inflammation and dentinal bridge formation, the Mann-Whitney U, and for clinical signs, the chi-square test was used (α = 0.05).
  
  
  RESULTS
  In terms of pulp inflammation, formation of hard tissue bridge and its appearance, the differences between the two experimental groups were not significant. However, clinical sensitivity to cold was significantly less for teeth treated with MTA (P < 0.05). All cases had formed a hard tissue bridge, and none of the specimens in either group had pulpal necrosis.
  
  
  CONCLUSIONS
  When treating teeth with healthy pulps, the response to partial pulpotomy treatment with both MTA and iRoot BP was favourable. However, pulps covered with iRoot BP were more sensitive to cold stimuli.
authors: Department of Endodontics, Islamic Azad University, Dental Branch, Tehran, Iran.
authors: S
authors: S
authors: Azimi
authors: M
authors: M
authors: Fazlyab
authors: D
authors: D
authors: Sadri
authors: M A
authors: MA
authors: Saghiri
authors: B
authors: B
authors: Khosravanifard
authors: S
authors: S
authors: Asgary
mesh_terms: D001641:Bicuspid / Q000601:surgery*; D002516:Ceramics; D003782:Dental Pulp / Q000187:drug effects*; D006801:Humans; D011672:Pulpotomy / Q000379:methods*
keywords: Cvek pulpotomy; MTA; bioceramics; iRoot BP; mineral trioxide aggregate; partial pulpotomy