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Table 3 The distance between canal orifices

From: CBCT evaluation of root canal morphology and anatomical relationship of root of maxillary second premolar to maxillary sinus in a western Chinese population

nal morphology \(\overline{X} \pm S\)(mm)
Type II 2.76 ± 0.55
Type IV 3.02 ± 0.55a
Type VI 2.72 ± 0.32
Type VIII 3.41 ± 0.11
  1. *p < 0.05, independent samples t test, type VI and type VIII not included
  2. aSignificant difference, p = 0.000011 < 0.05