Assessment of Imaging Accuracy Using Different Intraoral Scanner Streaming Modes: An In Vitro Study.

Aim: This in vitro study evaluated the accuracy of two intraoral scanners with different streaming modes (CEREC Omnicam, Dentsply-Sirona, USA; video mode) and (Shining 3D, Aoralscan, China; image mode).

Materials and methods: Three sets of acrylic maxillary typodont were uniformly reduced with known axial wall taper of 10°, 15° and 20°, respectively, using a computer numerical control (CNC) milling machine. Then, abutments were randomly divided into 3 groups: (1) Single abutments; (2) successive abutments; (3) and simple bridge-like abutments. Such abutments were scanned with three scanners: (1) Desktop scanner (InEos X5) that serve as a reference; (2) experimental intraoral scanners (CEREC Omnicam and Shining 3D). The analysis of these scans has been carried out using Geomagic Control X software to assess both IOSs trueness and precision. Each experimental model (CEREC Omnicam and Shining 3D) was scanned three times for precision determination. Descriptive analysis has been carried out by one-way ANOVA and independent t-test to ascertain any significant difference between the two comparing scanners.

Results: Regarding trueness, CEREC Omnicam has significantly better trueness (0.0554 ± 0.0111 mm) than Shining 3D IOS (0.0737 ± 0.0380 mm). Meanwhile, the variance in axial wall taper demonstrated little significant variation in all groups (single, successive, and bridge-like). The significant difference is associated with shallow axial wall taper (10° taper). On the contrary, both 15° and 20° axial wall taper/total occlusal convergence (TOC) revealed no significant difference. However, no significance was revealed in regard to precision.

Conclusions: Within the limitations of this study, the accuracy of the tested video and image streaming mode scanners is within the clinically acceptable range regarding different prosthetic scenarios, as well as different preparation convergences.

Clinical significance: This study provides valuable insights into intraoral scanners' accuracy regarding their different streaming modes, various prosthetic scenarios, and total occlusal convergence (TOC) as well. How to cite this article: Mubarak AKA, Shalaby MM, Bakry AM. Assessment of Imaging Accuracy Using Different Intraoral Scanner Streaming Modes: An In Vitro Study. J Contemp Dent Pract 2025;26(4):397-402.