Measurements Right side Left side P-value
Diameter of CS
(mm)
Mean (SD) 0.76 (0.02) 0.72 (0.02) 0.034b*
Median (min; max) 0.78 (0.35;1.4) 0.7 (0.22;1.65)
Location
(number [%])
Intercentral 4 (1.1) 4 (1.1) 0.992a
Central incisors 61 (16.7) 68 (18.8)
Central-lateral incisors 24 (6.6) 20 (5.5)
Lateral incisors 66 (18.1) 65 (17.8)
Lateral incisors-canine 10 (2.7) 14 (3.8)
Canine 14 (3.8) 15 (4.1)
CS-NCF
(mm)
Mean (SD) 15.33 (0.26) 15.71 (0.25) 0.539b
Median (min; max) 15.9 (4.5; 24) 16 (5.5; 28.8)
CS-BCB
(mm)
Mean (SD) 7.47 (0.09) 7.24 (0.09) 0.118b
Median (min; max) 7.4 (5.1; 12.5) 7.2 (4.9; 12.2)
CS-ARC
(mm)
Mean (SD) 7.59 (0.25) 7.02 (0.22) 0.13b
Median (min; max) 6.6 (3.7; 21) 6.2 (3.6; 21.5)
CS-NPC
(mm)
Mean (SD) 6.43 (0.24) 6.6 (0.23) 0.408b
Median (min; max) 6.3 (1.4; 17.6) 6.65 (2;14.2)

aChi-square test, bMann-Whitney U test. *Statistically significant at level P < 0.05.
SD = standard deviation; NCF = nasal cavity floor; BCB = buccal cortical bone; ARC = alveolar ridge crest; NPC = nasopalatine canal.