title: The effect of tubular penetration of root canal sealers on dye microleakage.
abstract: An in vitro study of a possible correlation between penetration of dentinal tubules by four root canal sealers and microleakage of external fluids into the canal was done using a dye leakage method and scanning electron microscopy. The root canals of 45 teeth were instrumented and the smear layer removed prior to obturation of root canals with gutta-percha and one of four sealers: Diaket, Endomethasone, CRCS or Ketac-Endo. The extent of leakage was scored after immersion in India ink for 72 h. The same specimens were also used for scanning electron microscopic evaluation. There was a statistical difference in leakage patterns between the groups (P < 0.05). Diaket had lower microleakage scores than the other sealers (P < 0.05). When the scores for penetration of sealers into the tubules were analysed, Ketac-Endo demonstrated the least penetration (P < 0.01). There appeared to be a converse relation between tubular penetration and dye leakage, but the correlation was not statistically significant (P > 0.05).
authors.affiliation: Department of Endodontics, School of Dentistry, Ege University, Izmir, Turkey.
authors.forename: B H
authors.initials: BH
authors.lastname: Sen
authors.forename: B
authors.initials: B
authors.lastname: Pişkin
authors.forename: N
authors.initials: N
authors.lastname: Baran
mesh_terms: D000287:Administration, Topical; D000704:Analysis of Variance; D000893:Anti-Inflammatory Agents; D001729:Bismuth; D002126:Calcium Hydroxide; D003763:Dental Leakage; D003804:Dentin / Q000648:ultrastructure; D003806:Dentin Permeability; D003907:Dexamethasone; D004338:Drug Combinations; D005557:Formaldehyde; D005899:Glass Ionomer Cements; D006801:Humans; D006854:Hydrocortisone; D008855:Microscopy, Electron, Scanning; D011145:Polyvinyls; D012387:Root Canal Filling Materials; D018709:Statistics, Nonparametric; D013943:Thymol / Q000031:analogs & derivatives; D015034:Zinc Oxide
chemical_list: D000893:Anti-Inflammatory Agents; D004338:Drug Combinations; D005899:Glass Ionomer Cements; C074934:Ketac Endo; D011145:Polyvinyls; D012387:Root Canal Filling Materials; C011244:corticosteroid methanetriol mixture; C075563:Calcibiotic Root Canal Sealer; D005557:Formaldehyde; D013943:Thymol; C014457:bismuth phosphate, copolymers of vinyl acetate, dichlorophen, propionyl-acetophenone, triethanolamine, vinyl chloride, vinylisobutyl ether, zinc oxide drug combination; D003907:Dexamethasone; D002126:Calcium Hydroxide; D015034:Zinc Oxide; D001729:Bismuth; D006854:Hydrocortisone