The deviation between digital and silicone impression for abutment teeth

Tóm tắt

The advancement of intraoral scanners has allowed for more efficient workflow in the dental practice. The aim of this research was to analyze the impression deviation between intraoral scan technique and conventional polyvinyl siloxane (PVS) material by 3D software. A case series study was performed with 16 teeth. Tooth preparation was taken with supra- or level- gingival heavy chamfer finishing line, then all samples were taken impression using either digital intraoral scanner (Trios 3th generation, 3Shape, Denmark) (group A) and PVS material (Silagum, DMG, Germany) (group B). The analysis was performed on the abutment teeth with parameters: the number of different areas, the deviation level of the surface area, the disparity value in 3 spatial dimensions. Result showed a notably difference between the two impression methods.