title: An evaluation of smear layer with various desensitizing agents after tooth preparation.
abstract: According to hydrodynamics, any agent blocking the dentinal tubules reduces the flow of fluids and diminishes hypersensitivity. The properties of the desensitizing agents that sponsor tubular occlusion and the barrier efficiency resulting from the interaction of the smear layer with test materials were examined with the scanning electron microscope and energy-dispersive x-ray microanalysis. Selected dentinal desensitizing was accomplished with burnishing procedures, cavity varnish, calcium hydroxide, and topical fluoride. Subjective evaluations were also recorded clinically after tooth preparation. This investigation indicated that the smear layer did not protect against zinc phosphate cement, and that cavity varnish prevented the formation of the smear plugs. The smear layer and plugs were basically composed of calcium and phosphorus, the major ingredients of dentin.
authors.affiliation: Department of Prosthodontics, University of Ankara, Faculty of Dentistry, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Zaimoglu
authors.forename: A K
authors.initials: AK
authors.lastname: Aydin
mesh_terms: D000328:Adult; D002118:Calcium / Q000032:analysis; D002126:Calcium Hydroxide / Q000627:therapeutic use; D003736:Dental Cavity Lining; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure; D003806:Dentin Permeability / Q000187:drug effects; D003807:Dentin Sensitivity / Q000209:etiology / Q000517:prevention & control*; D004577:Electron Probe Microanalysis; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D010758:Phosphorus / Q000032:analysis; D016369:Smear Layer; D012969:Sodium Fluoride / Q000627:therapeutic use; D015036:Zinc Phosphate Cement / Q000009:adverse effects*
chemical_list: D010758:Phosphorus; D015036:Zinc Phosphate Cement; D012969:Sodium Fluoride; D002126:Calcium Hydroxide; D002118:Calcium