title: Retention and leakage of implant-supported restorations luted with provisional cement: a pilot study.
abstract: Few data exist regarding cement failure load and marginal leakage of castings cemented to implant-supported abutments subjected to load and thermal cycling, especially with newer cements. This study evaluated the cement failure load and marginal leakage of castings cemented to Steri-Oss abutment/analog assemblies with one of seven luting protocols (n = 5). Protocols consisted of a zinc phosphate control, zinc phosphate with petroleum jelly, TempBond, TempBond NE, ImProv, ImProv with petroleum jelly and Provilink. Cemented castings were subjected to cyclic axial compression of 75 N for 100,000 cycles, 1000 thermal cycles (5-55 degrees C), and immersed 24 h in 0.5% basic fuchsin. The castings were then loaded in tension until cement failure. Cement failure load was analysed using anova and Fischer's PLSD (alpha = 0.05). Marginal leakage on the intaglio of the casting was scored with the unaided eye on a scale of 0-2, and analysed with Duncan's multiple range (alpha = 0.05). Similar groups are noted by superscript. Cement failure load (from lowest to highest): ImProv with petroleum jelly(a), TempBond(a), ImProv(a), Tempbond NE(a), Provilink(a), zinc phosphate with petroleum jelly(b), zinc phosphate(c) (P < 0.0001). Marginal leakage scores (from lowest to highest): ImProv(a), Provilink(a), ImProv with petroleum jelly(a), zinc phosphate(ab), zinc phosphate with petroleum jelly(ab), TempBond(bc), and TempBond NE(c) (P = 0.01). Addition of petroleum jelly to zinc phosphate lowered cement failure load without affecting marginal leakage. ImProv and Provilink demonstrated relatively low cement failure load, as well as lowest marginal leakage.
authors.affiliation: Dental Department, Chang-Gung Memorial Hospital, Keelung, Taiwan, Republic of China. shalom.de@msa.hinet.net
authors.forename: Y-H
authors.initials: YH
authors.lastname: Pan
authors.forename: L C
authors.initials: LC
authors.lastname: Ramp
authors.forename: C-K
authors.initials: CK
authors.lastname: Lin
authors.forename: P-R
authors.initials: PR
authors.lastname: Liu
mesh_terms: D002484:Cementation / Q000379:methods; D000044:Dental Abutments; D003738:Dental Cements / Q000737:chemistry / Q000627:therapeutic use*; D015921:Dental Implants; D017268:Dental Prosthesis Retention / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported / Q000379:methods*; D004643:Emollients / Q000627:therapeutic use; D006801:Humans; D008899:Mineral Oil / Q000737:chemistry / Q000627:therapeutic use; D010577:Petrolatum / Q000627:therapeutic use; D010865:Pilot Projects; D019279:Resin Cements / Q000737:chemistry / Q000627:therapeutic use; D015034:Zinc Oxide / Q000737:chemistry / Q000627:therapeutic use; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry / Q000627:therapeutic use; D015036:Zinc Phosphate Cement / Q000737:chemistry / Q000627:therapeutic use
chemical_list: D003738:Dental Cements; D015921:Dental Implants; D004643:Emollients; C413303:ImProv; D019279:Resin Cements; C474196:Tempbond NE; D015035:Zinc Oxide-Eugenol Cement; D015036:Zinc Phosphate Cement; D010577:Petrolatum; D008899:Mineral Oil; D015034:Zinc Oxide