title: Microleakage of new crown and fixed partial denture luting agents.
abstract: This study measured the in vitro microleakage of conventional and new FPD luting agents. Standardized preparations were made on 42 freshly extracted premolars. Facial and lingual chamfer margins were placed in enamel, mesial and distal in dentin and cementum, and castings were made in Rexillium III alloy and were then cemented with a standardized technique. Six groups of seven samples were tested, (1) polycarboxylate, (2) zinc phosphate, (3) glass ionomer, (4) Den-Mat Thin Film cement, (5) Panavia Ex, and (6) Den-Mat Thin Film cement with Tenure. The ranking of groups for stain ingress was from the greatest (1) to the least (6). A one-way analysis of variance and Tukey-Student range analysis revealed significantly similar groups, p less than 0.05:(1,2,3,4) (5,6).
authors.affiliation: University of Southern California, School of Dentistry, Los Angeles.
authors.forename: S N
authors.initials: SN
authors.lastname: White
authors.forename: J A
authors.initials: JA
authors.lastname: Sorensen
authors.forename: S K
authors.initials: SK
authors.lastname: Kang
authors.forename: A A
authors.initials: AA
authors.lastname: Caputo
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D002484:Cementation; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry; D003442:Crowns; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003743:Dental Enamel / Q000033:anatomy & histology; D003763:Dental Leakage; D003804:Dentin / Q000033:anatomy & histology; D003779:Denture Design; D003830:Denture, Partial, Fixed; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008422:Materials Testing; D010710:Phosphates / Q000737:chemistry; D011076:Polycarboxylate Cement / Q000737:chemistry; D019279:Resin Cements; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry; D015036:Zinc Phosphate Cement / Q000737:chemistry
chemical_list: D000269:Adhesives; D004396:Coloring Agents; D003188:Composite Resins; D003738:Dental Cements; C061504:Flecks; D010710:Phosphates; D011076:Polycarboxylate Cement; D019279:Resin Cements; C031374:zinc polyacrylate; D008277:Magnesium Oxide; D015036:Zinc Phosphate Cement; C040235:Ketac-cem; C052304:Panavia EX; D015034:Zinc Oxide