title: Microleakage of Cavit, CavitW, CavitG and IRM by impedance spectroscopy.
abstract: The aim of this study was to quantify the sealing ability of four temporary filling materials over 9 days using a new electrochemical technique. Fifty-two extracted human maxillary bicuspids were selected and prepared for the measurements. They were divided into four groups of 12 teeth each, in addition to two positive and two negative controls. After preparation of the endodontic access cavity the sealing ability was registered. After a randomization procedure one group was obturated with IRM, another group with Cavit, a third group with CavitW and the last group with CavitG. The sealability was measured just after obturation (time 0) and after days 1, 2, 3, 4, 7 and 9. The results showed that the IRM group was significantly more watertight than the different Cavit formulations. Throughout the experiment no significant difference was noticed between the Cavit and CavitW groups (P > 0.05). The CavitG group was significantly less watertight throughout the measurements (P < 0.05).
authors.affiliation: Department of Operative Dentistry, Dental Faculty of Nancy, France.
authors.forename: B M
authors.initials: BM
authors.lastname: Jacquot
authors.forename: M M
authors.initials: MM
authors.lastname: Panighi
authors.forename: P
authors.initials: P
authors.lastname: Steinmetz
authors.forename: C
authors.initials: C
authors.lastname: G'Sell
mesh_terms: D002133:Calcium Sulfate / Q000737:chemistry; D003738:Dental Cements; D003763:Dental Leakage; D003794:Dental Restoration, Temporary; D004338:Drug Combinations; D004339:Drug Compounding; D017097:Electric Impedance; D005069:Evaluation Studies as Topic; D006244:Hardness; D006801:Humans; D008768:Methylmethacrylates; D011145:Polyvinyls / Q000737:chemistry; D012387:Root Canal Filling Materials; D018709:Statistics, Nonparametric; D015034:Zinc Oxide / Q000737:chemistry; D015035:Zinc Oxide-Eugenol Cement
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