Alpha-defensin-novel synovial fluid biomarker for the diagnosis of periprosthetic joint infection.

Purpose: Periprosthetic joint infection (PJI) continues to be a significant complication after total joint arthroplasty. Diagnosis of PJI can be challenging and elusive in the absence of a gold standard. This purpose of this article is to review the current evidence on the utility of serum and synovial fluid biomarkers to help aid in the diagnosis of PJI with focusing on synovial fluid alpha-defensin.

In vitro deformation of acetyl resin and metal alloy removable partial denture direct retainers.

Statement Of The Problem: Acetyl resin removable partial denture (RPD) direct retainers may provide an esthetic alternative to conventional metal direct retainers. The effect of repeated stress on acetyl resin direct retainers is unknown.

Purpose: This study compared deformation of acetyl resin and metal alloy RPD direct retainers after repeated dislodgments over a test die.