title: Microleakage of endodontic temporary restorative materials.
abstract: This study compared the sealing of Caviton, Cavit, and IRM at two powder to liquid ratios of 6 g/ml and 2 g/ml. Standard endodontic access preparations were made in 140 noncarious, nonrestored crowns of extracted human molars. They were divided into six groups, including positive and negative controls. Microleakage assessment was evaluated by basic fuchsin dye penetration after thermal cycling (5 to 55 degrees C for 100 cycles). The results indicated that Caviton provided the best seal, followed by Cavit. Cavit demonstrated better sealing than IRM at the powder to liquid ratio of 6 g/ml and 2 g/ml. There was a statistically significant difference in leakage between the Cavit group and IRM (powder to liquid = 6 g/ml), between the Cavit group and IRM (powder to liquid = 2 g/ml) group (p < 0.05). However, no statistically significant difference between the two different powder to liquid ratio groups of IRM was disclosed.
authors.affiliation: Department of Retorative Dentistry, Veterans General Hospital, Taipei, Taiwan, Republic of China.
authors.forename: Y C
authors.initials: YC
authors.lastname: Lee
authors.forename: S F
authors.initials: SF
authors.lastname: Yang
authors.forename: Y F
authors.initials: YF
authors.lastname: Hwang
authors.forename: L H
authors.initials: LH
authors.lastname: Chueh
authors.forename: K H
authors.initials: KH
authors.lastname: Chung
mesh_terms: D000704:Analysis of Variance; D002133:Calcium Sulfate; D003738:Dental Cements; D003763:Dental Leakage; D003794:Dental Restoration, Temporary; D004338:Drug Combinations; D006801:Humans; D008768:Methylmethacrylates; D008963:Molar; D011145:Polyvinyls; D012387:Root Canal Filling Materials; D012390:Root Canal Therapy / Q000379:methods; D014753:Vinyl Compounds; D015034:Zinc Oxide; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D003738:Dental Cements; D004338:Drug Combinations; D008768:Methylmethacrylates; D011145:Polyvinyls; D012387:Root Canal Filling Materials; D014753:Vinyl Compounds; D015035:Zinc Oxide-Eugenol Cement; C086076:calcium sulfate, zinc oxide, vinyl acetate, zinc phosphate root canal filling; C031667:IRM cement; C020872:Cavit; D015034:Zinc Oxide; D002133:Calcium Sulfate