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CHARLESTON, S.C., U.S.: With intraoral scanning becoming increasingly prevalent in dentistry, knowing which scanner will give the best performance is essential. In a new study led by Dr. Walter Renne, from the Department of Oral Rehabilitation at the Medical University of South Carolina, researchers looked at seven scanners and analyzed their performance based on 3-D comparisons. They found that Planmeca PlanScan and 3Shape’s TRIOS performed the best.
The study’s main objective was to compare the trueness and precision of the scanners in both posterior sextant and complete-arch scenarios. Additionally, it looked at the time each scan required and correlated it with trueness and precision.
To achieve the most accurate and no-bias results, a custom complete-arch model was fabricated with a refractive index similar to that of tooth structure. Six digital intraoral scanners and one digital laboratory scanner were used to scan the custom model for both scenarios. Analysis was performed using 3-D metrology software to measure discrepancies between the master model and experimental casts.
According to the study, Planmeca PlanScan was found to have the best trueness and precision for sextant scanning, and 3Shape’s TRIOS the best balance of speed and accuracy for complete-arch scanning.
The study, titled “Evaluation of the accuracy of 7 digital scanners: An in vitro analysis based on 3-dimensional comparisons,” was published in the July issue of the Journal of Prosthetic Dentistry.
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