| Popis: |
Aim or Purpose: The purpose of this in vitro study was to evaluate the impact of scannable healing abutment shape and height on the accuracy of implant impression. Materials and Methods: IS III active (Neobiotech Co., Seoul, Korea), TS III (Osstem Implant Co., Seoul, Korea), and Bright tissue level (Dentium Co., Seoul, Korea) were installed in the mandibular right second premolar and first molar areas of each 3d-printed partially edentulous mandibular model. With scanbodies and scannable healing abutments connected, reference STL files were generated by the model scanner (inEos X5, Dentsply Sirona, Bensheim, Germany) and 10 STL files of each model were generated with the intraoral scanner (PRIMESCAN®, Dentsply Sirona, Bensheim, Germany). By using exocad DentalCAD (exocad GmbH, Darmstadt, Germany), STL files were aligned on the coordinate system and digital laboratory analogues were matched to each STL file. The deviation of the angle between the long axes of fixtures and the reference plane and the 3d-distance deviation of the fixture tops' centers were measured using the Geomagic® Control X (3D Systems Inc., Rock Hill, SC, USA). Kruskal-Wallis test, Mann-Whitney test and Bonferroni correction were used for statistical analysis. Results: Scannable healing abutments of the three companies showed comparable 3d-distance and angular deviation, although there were some differences depending on the location. Adding a plastic cap on the scannable healing abutment of Bright implant significantly increased the angular deviation, while the 3d-distance deviation was significantly decreased. Conclusions: In the limitation of this study, scannable healing abutment shape did not affect the implant impression accuracy while adding a cap increased the angular deviation. |
