title: In vitro evaluation of tooth discolouration induced by mineral trioxide aggregate Fillapex and iRoot SP endodontic sealers.
abstract: The purpose of this study was to evaluate the tooth discolouration potential of two new calcium-silicate-based sealers (mineral trioxide aggregate (MTA) Fillapex and iRoot SP). Sixty premolars were resected below the coronal third of the root. Pulp chamber was instrumented and irrigated via the apical access. Samples were randomly assigned into groups A (MTA Fillapex), B (AH plus), C (iRoot SP) and D (unfilled as control). Colour assessment was performed at baseline, 1st, 3rd and 6th months with an intraoral spectrophotometer. Analysis of variance with additional multiple comparisons of post hoc were used for statistical analysis. All sealers caused perceptible tooth discolouration and there was no statistically significant difference between them. Discolouration progressed within the first 3 months and then decreased until the 6th month.
authors.affiliation: Dental Research Center and Department of Endodontics, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Forghani
authors.affiliation: Dental Materials Research Center and Department of Endodontics, Faculty of dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Gharechahi
authors.affiliation: Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Sahar
authors.initials: S
authors.lastname: Karimpour
mesh_terms: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D006801:Humans; D008422:Materials Testing; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; D014075:Tooth Discoloration
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C000621519:iRoot SP; C086631:mineral trioxide aggregate
keywords: AH plus; MTA Fillapex; calcium-silicate based sealer; iRoot SP; tooth discolouration