Feasibility of digitizing multiple tissue-level implants without scan bodies for fixed dental prostheses

A mandibular typodont model containing two tissue-level implants - a regular-platform (RP) implant in the premolar region and a wide-platform (WP) implant in the molar region - was digitized. Three intraoral scanners (TRIOS 5, Primescan, and DCS Scan) and one laboratory scanner (E4, reference) were used to perform 16 scans each, both with and without a scan body. The resulting dataset comprised three-dimensional coordinate data used to calculate linear deviations (x, y, z), angular deviations, and vector deviations.