In vivo aging-induced surface roughness alterations of Invisalign^® and 3D-printed aligners.

In essence, for the Invisalign ® group of retrieved aligners, the sole parameter that demonstrated a clear trend and dynamic to raise after use was the amplitude parameter Sz; however, in contrast to the rest of the parameters, a substantial variability was detected reaching the levels of approximately 9000 nm in the IQR range for a very similar median value.

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