An evaluation of effect of implant abutment on human gingival epithelial keratinocytes.

Background: Abutment surfaces are being designed to promote gingival soft tissue attachment and integration. This confirms implant survival for long term by forming a seal around the prosthetics.

Objectives: This study was done to compare the biocompatibility of three implant abutments: titanium uncoated, Ti-nitride coated, and modified polyetheretherketone (PEEK) with human gingival keratinocytes.

An Assessment of Retention Force of ZrO, Polyether Ether Ketone, and ZrO-Polyether Ether Ketone Telescopic Attachment for Mandibular Overdentures.

Objectives: The objective of this study was to compare ZrO, polyether ether ketone (PEEK), and ZrO-PEEK telescopic attachments in terms of retention of overdenture.

Methodology: Forty-five acrylic resin models of the lower arch were divided into 3 groups of 15 each. In Group I, primary and secondary crowns were constructed from all zirconia (ZrO), whereas all PEEK was used for Group II and Group III was made up of ZrO PEEK.