title: Depth of penetration of four resin sealers into radicular dentinal tubules: a confocal microscopic study.
abstract: BACKGROUND
  The aim of this in vitro study was to evaluate the depth of penetration of 4 different endodontic resin sealers into the radicular dentinal tubules with the aid of confocal microscopy.
  
  
  METHODS
  Eighty single-rooted teeth were instrumented and divided into 4 groups composed of 20 teeth each. The samples were obturated with AH Plus, RealSeal, EndoRez, and RoekoSeal resin sealers, respectively. The core material in all the groups was Resilon. The teeth were sectioned at the coronal, middle, and apical thirds and viewed under confocal microscope to determine the depth of penetration of the sealer into the dentinal tubules.
  
  
  RESULTS
  The results showed that the maximum penetration was exhibited by RealSeal resin sealer, followed by AH Plus, RoekoSeal, and EndoRez. The coronal third showed the maximum penetration, followed by middle third and least at the apical third.
  
  
  CONCLUSIONS
  Under the parameter of this study, RealSeal resin sealer exhibited the maximum penetration.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Ragas Dental College and Hospital, Chennai, India. saurabhchandra@yahoo.com
authors.forename: Saurabh S
authors.initials: SS
authors.lastname: Chandra
authors.forename: Padmanabhan
authors.initials: P
authors.lastname: Shankar
authors.forename: Rajamani
authors.initials: R
authors.lastname: Indira
mesh_terms: D001641:Bicuspid; D003188:Composite Resins; D003738:Dental Cements; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging; D003804:Dentin / Q000033:anatomy & histology; D003806:Dentin Permeability; D019234:Dentinal Fluid; D004853:Epoxy Resins; D006801:Humans; D018613:Microscopy, Confocal; D019252:Radiography, Dental, Digital; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D018915:Root Canal Preparation
chemical_list: D003188:Composite Resins; D003738:Dental Cements; C481259:EndoRez; D004853:Epoxy Resins; C511498:Real Seal composite resin; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; C465381:roeko seal