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.