title: In vitro evaluation of the apical seal of two different retrograde filling materials.
abstract: To determine whether the selection of retrograde filling material or the choice of instruments in root tip resection influences the seal of the retrograde root filling. Seventy-two single-rooted teeth were used. Root resection was performed using a Lindemann bone cutter, a Lindemann bone cutter with A-shaped cutting design or a diamond-coated bur. Retro-cavities were prepared by piezo-tips and filled with Super-EBA or MTA. Teeth were made transparent and dye penetration was assessed. Teeth filled with MTA, irrespective of the resection instrument, showed no measurable dye penetration. All groups filled with Super-EBA showed an apical leakage. There were no significant differences between the three groups filled with Super-EBA (P = 0.09). The comparison of MTA versus Super-EBA showed significant superiority in apical seal in favour of MTA (P < 0.0001). To use MTA as a retrograde filling material showed superior results in terms of the tightness of the apical seal as compared to Super-EBA.
authors.affiliation: Department of Health, Department of Oral Surgery and Policlinical Ambulance, Faculty of Dental Medicine, University of Witten/Herdecke, Witten, Germany.
authors.forename: Korbinian
authors.initials: K
authors.lastname: Benz
authors.affiliation: Department of Health, Department of Operative and Preventive Dentistry, Faculty of Dental Medicine, University of Witten/Herdecke, Witten, Germany.
authors.forename: Ljubisa
authors.initials: L
authors.lastname: Markovic
authors.affiliation: Department I: Epidemiology and Delivery of Health Care Services, Institute of German Dentists, Cologne, Germany.
authors.forename: R A
authors.initials: RA
authors.lastname: Jordan
authors.affiliation: Private Practice, Deggendorf, Germany.
authors.forename: Claudia
authors.initials: C
authors.lastname: Novacek
authors.affiliation: Faculty of Dental Medicine, Department of Oral Surgery and Policlinical Ambulance, University of Witten/Herdecke, Witten, Germany.
authors.forename: Jochen
authors.initials: J
authors.lastname: Jackowski
mesh_terms: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003763:Dental Leakage; D010087:Oxides; D012184:Retrograde Obturation; D012387:Root Canal Filling Materials; D017640:Silicates
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates
keywords: Lindemann bone cutter; Super-EBA; apicoectomy; mineral trioxide aggregate; retrograde filling