title: Artificial floor technique used for the repair of furcation perforations: a microleakage study.
abstract: Access openings and furcation perforations were prepared in 45 human extracted teeth randomly divided into three equal groups. Furcation perforations were obtruded using only a resin-modified, glass-ionomer material (Vitrebond) in the first group. Calcium sulfate and hydroxylapatite were used as artificial floors under the Vitrebond in the second and third groups, respectively. Pulp chambers and access openings were filled with composite resin. After immersion in 2% methylene blue solution for 2 wk, the teeth were sectioned and dye penetration was measured under a stereomicroscope using a NIH Image 1.47 Macintosh program. Results indicated that calcium sulfate and hydroxylapatite artificial floors significantly improved the sealing ability of Vitrebond and provided successful barriers against its overextension.
authors.affiliation: Department of Restorative Dentistry, College of Dentistry, University of Tanta, Egypt.
authors.forename: H A
authors.initials: HA
authors.lastname: Alhadainy
authors.forename: A I
authors.initials: AI
authors.lastname: Abdalla
mesh_terms: D001672:Biocompatible Materials / Q000627:therapeutic use; D002133:Calcium Sulfate / Q000627:therapeutic use; D003188:Composite Resins; D003763:Dental Leakage / Q000517:prevention & control*; D003764:Dental Materials / Q000627:therapeutic use; D003786:Dental Pulp Cavity / Q000187:drug effects; D003804:Dentin / Q000187:drug effects; D004353:Drug Evaluation, Preclinical; D017886:Durapatite / Q000627:therapeutic use; D017823:Furcation Defects / Q000628:therapy*; D005899:Glass Ionomer Cements / Q000627:therapeutic use; D006801:Humans; D066298:In Vitro Techniques; D011897:Random Allocation; D012387:Root Canal Filling Materials / Q000627:therapeutic use
chemical_list: D001672:Biocompatible Materials; D003188:Composite Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements; D012387:Root Canal Filling Materials; C067790:Vitrabond; D017886:Durapatite; D002133:Calcium Sulfate