title: Leakage in roots coronally sealed with different temporary fillings.
abstract: This study was aimed at determining the ability of different coronal temporary fillings to prevent corono-apical penetration of bacteria. A total of 103 human teeth, including three controls, were instrumented, obturated with gutta-percha, coronally sealed with either Cavit, Intermediate Restorative Material (IRM), glass-ionomer cement, Cavit/glass-ionomer cement, or IRM/glass-ionomer cement, respectively. Each root was fixed with wax between two chambers: the coronal chamber harboring soy broth with 10(8) colony-forming units of Streptococcus mutans/ml, the apical chamber containing sterile soy broth. The latter was checked daily for turbidity, indicating corono-apical penetration of bacteria. The Cavit group, the IRM group, and the Cavit/glass-ionomer cement group showed significantly more leakage than the glass-ionomer cement group of the IRM/glass-ionomer cement group. If a sample leaked, all except one (IRM/glass-ionomer cement) leaked before day 12. This in vitro study seems to indicate that only glass-ionomer cement and IRM combined with glass-ionomer cement may prevent bacterial penetration to the periapex of root-filled teeth over a 1-month period.
authors.affiliation: Department of Operative and Preventive Dentistry and Endodontics, Berlin, Germany.
authors.forename: C R
authors.initials: CR
authors.lastname: Barthel
authors.forename: A
authors.initials: A
authors.lastname: Strobach
authors.forename: H
authors.initials: H
authors.lastname: Briedigkeit
authors.forename: U B
authors.initials: UB
authors.lastname: Göbel
authors.forename: J F
authors.initials: JF
authors.lastname: Roulet
mesh_terms: D002133:Calcium Sulfate / Q000627:therapeutic use; D003738:Dental Cements; D003763:Dental Leakage / Q000382:microbiology / Q000517:prevention & control*; D003794:Dental Restoration, Temporary / Q000379:methods*; D004338:Drug Combinations; D006801:Humans; D008768:Methylmethacrylates / Q000627:therapeutic use; D011145:Polyvinyls / Q000627:therapeutic use; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D013295:Streptococcus mutans; D019227:Tooth Apex; D015034:Zinc Oxide / Q000627:therapeutic use; D015035:Zinc Oxide-Eugenol Cement / Q000627:therapeutic use
chemical_list: D003738:Dental Cements; D004338:Drug Combinations; D008768:Methylmethacrylates; D011145:Polyvinyls; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C031667:IRM cement; C020872:Cavit; D015034:Zinc Oxide; D002133:Calcium Sulfate