Digital fabrication of polyetheretherketone retentive bar attachment inserts as overdenture maintenance: A dental technique.

A technique for the virtual designing of retentive attachment inserts for bar-retained 2-implant mandibular overdentures is described. The bar attachment is scanned intraorally, the retentive insert designed with the MESHMIXER software program, and the file 3D printed in resin, which is replicated in polyetheretherketone (PEEK). The technique offers high-quality inserts with good retention that can replace the conventional nylon inserts and reduce the number of maintenance visits and the frequency of changing the bar attachment.