From: Prevalence and location of the secondary mesiobuccal canal in 1,100 maxillary molars using cone beam computed tomography
MB2
Absent
Present
Total
Female
167
105
272
57,2%
40,7%
49,5%
Male
125
153
278
42,8%
59,3%*
50,5%
292
258
550
100%
Rigth Side
151
127
51,7%
49,2%
Left Side
141
131
48,3%
50,8%