Effect of posterior span length on the trueness and precision of 3 intraoral digital scanners: A comparative 3-dimensional <i>in vitro</i> study.

Precision For all span lengths, the statistical analysis revealed highly significant differences among all 3 scanners ( P <0.05); the best precision values were recorded for Primescan AC, followed in descending order by Trios 3 and Planmeca Emerald, which was the least precise among the 3 scanners.

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