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
  • Title of Journal : JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
  • 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

Abstract

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.