title: In vivo microleakage of luting cements for cast crowns.
abstract: Standardized tooth preparations were completed on previously intact human molars in vivo, and castings were made with a precious metal ceramic alloy by conventional techniques. The castings were randomly assigned to the following luting agents: zinc phosphate, composite resin-glass ionomer hybrid, and a composite resin-glass ionomer hybrid with a dentinal bonding agent and were cemented in a standardized manner to periodontally compromised molars. After 6 months the teeth were carefully extracted, stained, embedded, and sectioned, and the in vivo microleakage was measured. ANOVA disclosed significant differences between groups, and a multiple comparisons test revealed that the zinc phosphate group leaked significantly more than other cement groups.
authors.affiliation: Department of Restorative Dentistry/Biomaterials, University of Southern California, School of Dentistry, Los Angeles.
authors.forename: S N
authors.initials: SN
authors.lastname: White
authors.forename: Z
authors.initials: Z
authors.lastname: Yu
authors.forename: J F
authors.initials: JF
authors.lastname: Tom
authors.forename: S
authors.initials: S
authors.lastname: Sangsurasak
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D002484:Cementation / Q000009:adverse effects; D003188:Composite Resins / Q000009:adverse effects; D003442:Crowns; D003738:Dental Cements / Q000009:adverse effects*; D003763:Dental Leakage / Q000175:diagnosis / Q000209:etiology* / Q000517:prevention & control; D003793:Dental Restoration, Permanent; D017220:Dentin-Bonding Agents / Q000009:adverse effects*; D004311:Double-Blind Method; D005260:Female; D005899:Glass Ionomer Cements / Q000009:adverse effects; D006801:Humans; D008297:Male; D008689:Methacrylates / Q000009:adverse effects; D015203:Reproducibility of Results; D015036:Zinc Phosphate Cement / Q000009:adverse effects
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D008689:Methacrylates; C074811:Tenure adhesive; D015036:Zinc Phosphate Cement