Microscopic evaluation of peri-implant soft tissue cell adherence to different custom abutment materials

When a provisional restoration can be placed at the time of immediate implant placement, it temporarily serves as a functional and esthetic placeholder. Although different surface morphologies of dental implant and abutments have been shown to affect cellular adhesion, the optimal material or its surface is not clearly understood. The aim of this project was to determine the optimal surface of different materials used for provisional abutment for fibroblast and epithelial cell attachment in-vitro. Cellular adhesion was investigated on the specimens in 10 experimental groups: surfaces replicating provisional restoration/abutments made of acrylic resins (smooth and porous), composite resins (flowable and universal), titanium (smooth and etched), polyether polymers (PEEK and PEKK), and zirconia (rough and smooth).   Human gingival fibroblast (HGF) and epithelial cells (NOKSI) were used to test cellular adhesion on these surface materials. HGF and NOKSI cellular attachment and proliferation in different time point will be presented.

Learning objectives

  • To learn the role of provisional restoration/abutment placed at the time of immediate implant placement
  • To learn the surface characteristics of the different materials used for provisional restoration/abutment
  • To learn the appropriate timing for the soft tissue maturation to achieve optimal outcome