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Table 5 Types of the distance form root to the maxillary sinus floor for both gender

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

 

Type of distance from root to maxillary sinus floor [n,(%)]

Gender

Type I > (0.5 mm)

Type II (≤ 0.05 mm)

Type III (= 0 mm)

Type IV (< 0 mm)

Female

268 (22.7)

25 (2.1)

133 (11.2)

19 (1.6)

Male

424 (35.8)

50 (4.2)

161 (13.7)

103 (8.7)

Total

692 (58.5)

75 (6.3)

294 (24.9)a

122 (10.3)b

  1. *p < 0.05, chi-square test
  2. aSignificant difference, p = 0.002 < 0.05
  3. bSignificant difference, p = 0.000000 < 0.05