title: Methodologies for assessment of apical and coronal leakage of endodontic filling materials: a critical review.
abstract: Apical leakage continues to be a topic of great interest, because in spite of the advances in Endodontics, clinical failures still occur. Most failures are probably attributed to the proliferation of bacteria that remain viable after chemical-mechanical preparation and cause periapical tissue irritation. Coronal leakage has aroused researchers' interest over the last few years, since canals may be re-contaminated after loss of coronal sealing or fracture of the remaining tooth. In this review, the various methodologies used for assessing root canal sealing capacity are critically analyzed, as they are not standardized, which makes it difficult to compare the results obtained when different methodologies are used, even though the same substrate is being assessed.
authors.affiliation: Department of Dental Clinic, Dentistry School, Federal University of Ceará, Brazil. denusa.verissimo@terra.com.br
authors.forename: Denusa Moreira
authors.initials: DM
authors.lastname: Veríssimo
authors.forename: Mônica Sampaio
authors.initials: MS
authors.lastname: do Vale
mesh_terms: D001419:Bacteria / Q000302:isolation & purification; D004396:Coloring Agents; D003763:Dental Leakage / Q000175:diagnosis*; D004395:Dye Dilution Technique; D004731:Endotoxins / Q000032:analysis; D005374:Filtration / Q000379:methods; D006801:Humans; D009391:Nephelometry and Turbidimetry; D012387:Root Canal Filling Materials
chemical_list: D004396:Coloring Agents; D004731:Endotoxins; D012387:Root Canal Filling Materials