Evaluation of tensile strength of different esthetic coping materials to Ti-base and monolithic zirconia crowns

Salginci I., YILDIRIM AVCU G. , Ozcan M.

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, 2021 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume:
  • Publication Date: 2021
  • Doi Number: 10.1080/01694243.2021.1940655
  • Keywords: Abutment, adhesion, bond strength, monolithic zirconia, polyetheretherketone, polyvinylidene difluoride, zirconia, IMPLANT-SUPPORTED RESTORATIONS, RESIN CEMENT SELECTION, SHEAR BOND STRENGTH, IN-VITRO FATIGUE, SURFACE TREATMENTS, TITANIUM, ABUTMENTS, COMPOSITE, PERFORMANCE, RESISTANCE


This study evaluated the tensile strength of three aesthetic abutment materials at two different angulations (0 and 15 degrees) to Ti-base and monolithic zirconia crowns. Prefabricated polyvinylidene difluoride (Medentika Implant) abutments were obtained and zirconia (Kingch) and polyetheretherketone (Ceramill) copings were manufactured using a computer-aided design/computer-aided manufacturing system (n = 12). Bonding surfaces of the copings and Ti-bases were air-abraded with alumina and then metal primer was applied. Self-adhesive resin cement (Multilink Hybrid Abutment) was used for cementation of copings to Ti-base. The bonding surfaces of the monolithic zirconia crowns (Upcera ST ML) were air-abraded and crowns were cemented using self-adhesive cement (seT PP). Data were analyzed using Kruskal-Wallis and Mann-Whitney U tests. No significant difference was found in the tensile strength of abutment to the crown interface for 0 degrees tapered abutments (p > 0.05). Regarding 15 degrees tapered abutments, the highest tensile strength values were obtained with zirconia abutments (p < 0.05). The tensile strength of monolithic zirconia crowns was lower than the restorations used in routine clinical practice.