TY - JOUR AU - AB - ORIGINAL RESEARCH An Investigation of the Effect of Modifying and Reusing Impression Copings on Transfer of Implant Analog Position and Angulation 1 2 3 4 5 6 Francisco F Gallardo , Cade A Salmon , Wen Lien , Ryan R Sheridan , Richard C Batzer , Kraig S Vandewalle A b s t r A c t Aim: The aim of this research was to determine whether sterilization and reutilization of impression copings had an impact on the accuracy of casts made for multiimplant restorations. Materials and methods: Four master casts embedded with five implant analogs were fabricated. Polyvinyl siloxane (PVS) impressions of the master cast with copings attached to the analogs were made and poured in dental stone. The impression copings were subjected to cleaning and sterilization. These processes were repeated 30 cycles for each of the two groups of five impression copings: one without modification and one with modification that included air abrasion and PVS adhesive. A coordinate measuring machine (CMM) was used to measure relative angles and distances between the reference analog and analogs. The relative angles and distances measured on the stone casts were compared to the master resin cast to obtain positional and angular TI - An Investigation of the Effect of Modifying and Reusing Impression Copings on Transfer of Implant Analog Position and Angulation JF - The Journal of Contemporary Dental Practice DO - 10.5005/jp-journals-10024-2789 DA - 2020-01-01 UR - https://www.deepdyve.com/lp/unpaywall/an-investigation-of-the-effect-of-modifying-and-reusing-impression-q3oRrRL3DP DP - DeepDyve ER -