The highest occurrences were recorded in the 31–40 and 41–50 years groups, but these differences did not reach statistical significance ( p > 0.05) as shown in S1 and 2.
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Anatomical complexity in mandibular second molars: prevalence of C-shaped canals, radicular grooves, taurodontism, and radices molarum in Saudi population.
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0.0500
0.0500