Evaluation of Mental Foramen with Cone Beam Computed Tomography: A Systematic Review of Literature

Table 1

Location of the mental foramen (MF) in relation to adjacent teeth n MF (%).

Articles	Anterior to PM1	In line with PM1	Between PM1 and PM2	In line with PM2	Between PM2 and M1	In line with M1 (often to the mesial root)	Between M1 and M2	Total
[14]	0 (0.0)	18 (4.8)	231 (59.8)	120 (30.4)	16 (4.2)	1 (0.3)	0 (0.0)†	386 (100)
[15]	0 (0.0)	7 (4.2)	94 (56)	60 (35.7)	7 (4.2)	0 (0.0)	0 (0.0)	168 (100)
[16]	(0.0^†)	(3.33)	(51.67)	(40.83)	(4.17)	(0.0^†)	(0.0^†)	(100)
	—	(6.66^†)^‡	(20)^‡	(73.33)^‡	0^‡	—	—	(100)
[17]	57 (53.8)			1 (1)	48 (45.3)			106 (100)
[18]	0 (0.0)†	32 (5)	161 (25.3)	369 (57.9)	58 (9.1)	17 (2.7)	0 (0.0)†	637 (100)
[19]	0 (0.0)	1 (2.6)	9 (23.1)	22 (56.4)	7 (17.9)	0 (0.0)	0 (0.0)†	39 (100)
[20]	0 (0.0)†	0† (0.0†)	103 (33.0)	157 (50.3)	52 (16.7)	0 (0.0)†	0 (0.0)†	312 (100)
[21]	(0.0)†	(5.0)	(25.3)	(57.9)	(0.0)†	(2.7)	(9.1)	(100)
[22]	0 (0.0)†	62 (10.3)	179 (29.6)	319 (52.8)	36 (6)	8 (1.3)	0 (0.0)†	604 (100)
[23]	0 (0.0)†	(7.03)	(73.39†)	(17.74)	(1.83†)	(0.0†)	(0.0 †)	(100)
[12]	1 (0.6)	18 (10.7)	75 (44.4)	69 (40.8)	5 (3.0)	1 (0.6)	0 (0.0)†	169 (100)
[24]	0.0	(1.9)	(43.5)	(34.3)	(19.4)	(0.9)	(0.0†)	(100)
	—	—	(41.2)^‡	(37.3)^‡	—	—	—	(100)
[25]	0 (0.0)	5 (3.6)	70 (50.4)	57 (41.0)	7 (5.0)			139 (100)
[26]	2 (0.25)†	66 (8.26)†	495 (61.95)†	219 (27.41)†	11 (1.38)†	6 (0.75)†	—	799† (100)

PM1: first premolar, PM2: second premolar, M1: first molar, and M2: second molar. ^†Values calculated based on data from publications.^‡In the presence of an anterior loop of the inferior alveolar nerve.