Prospective clinical trial of a new press-over crown system Public Deposited

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  • March 22, 2019
  • Conard, Kathryn L.
    • Affiliation: School of Dentistry, Department of Prosthodontics
  • Porcelain-fused-to-metal (PFM) and all-ceramic alternatives to metal alloy crowns are preferred in esthetically-oriented communities. When strength is of concern, the PFM crown is an accepted historical reference. Pressed-on-metal (POM) crowns are PFM restorations produced by an alternative method. Their advantages include durability, reduced abrasion, reduced porosity, and pragmatic advantages in mass production. Strong, predictable, wear-resistant, well-fitting, esthetic POM crowns may offer significant advantages over conventional PFMs. This study's aim was to evaluate two-year crown survivability. It required six clinical visits. Evaluation was planned at six, 12 and 24 months after crown cementation using CDA and USPHS quality evaluations. Follow-up evaluations continue for this IRB-approved study, but POM technology has been favorable with few adverse events. Results are 36 patients treated with 40 crowns with good to very good esthetics, veneer porcelain with reproducible quality, lacking surface porosity at the metal-ceramic interface, no voids and acceptable to satisfactory marginal adaptation.
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  • In Copyright
  • "... in partial fulfillment of the requirements for the degree of Master of Science in the School of Dentistry (Prosthodontics)."
  • Cooper, Lyndon F.
Degree granting institution
  • University of North Carolina at Chapel Hill
Place of publication
  • Chapel Hill, NC
  • Open access

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