title: Clinical evaluation of bacterial leakage of endodontic temporary filling materials.
abstract: This study was an in vivo comparison of the bacterial leakage associated with three endodontic temporary restorative materials: Cavit, Intermediate Restorative Material (IRM), and TERM. The access openings of 51 endodontically treated teeth were randomly sealed with a 4-mm thickness of one of the three materials. Three wk after placement of each temporary restoration, bacterial leakage was evaluated by sampling from beneath the temporary restoration and then culturing the samples both aerobically and anaerobically. Positive growth occurred in 4 of 14 TERM samples and in 1 of 18 IRM samples. Cavit did not demonstrate leakage in any of the teeth in which it was used. Cavit provided a significantly better seal than TERM over the study period.
authors.affiliation: Naval Dental School, Bathesda, MD, USA.
authors.forename: C W
authors.initials: CW
authors.lastname: Beach
authors.forename: J C
authors.initials: JC
authors.lastname: Calhoun
authors.forename: J D
authors.initials: JD
authors.lastname: Bramwell
authors.forename: J W
authors.initials: JW
authors.lastname: Hutter
authors.forename: G A
authors.initials: GA
authors.lastname: Miller
mesh_terms: D002133:Calcium Sulfate; D016009:Chi-Square Distribution; D015169:Colony Count, Microbial; D003188:Composite Resins; D003738:Dental Cements; D003763:Dental Leakage / Q000209:etiology / Q000382:microbiology; D018772:Dental Marginal Adaptation; D003786:Dental Pulp Cavity / Q000382:microbiology*; D003794:Dental Restoration, Temporary / Q000009:adverse effects*; D004338:Drug Combinations; D005069:Evaluation Studies as Topic; D006801:Humans; D008768:Methylmethacrylates; D011145:Polyvinyls; D012387:Root Canal Filling Materials / Q000009:adverse effects; D018709:Statistics, Nonparametric; D015034:Zinc Oxide; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D004338:Drug Combinations; D008768:Methylmethacrylates; D011145:Polyvinyls; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C067476:T.E.R.M. composite resin; C031667:IRM cement; C020872:Cavit; D015034:Zinc Oxide; D002133:Calcium Sulfate