Effect of Coronal Flaring on Initial Apical File Size Estimation in Curved Canals Using Three Distinct Rotary Instruments: A Comparative In Vitro Study.

The Mann-Whitney U test was utilized to appraise the difference in frequency of file size increase after flaring between the groups, which indicates a statistically highly significant difference (p=0.01) between groups 2, 3, and 4, as shown in Table 4 .

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