Dwayne Lassiter a C-130 Engineer with Warner Robins Air Logistics Complex demonstrates how they repurpose expired Reprosil to recreate parts from hard to reach places or missing due to corrosion Friday March. 13, 2020. Reprosil is a material used to make impressions to create crowns for dental patients. The repurposing of expired Reprosil saves the Air Force $2.5 million annually.