Kekere-Ekun T A
Afr Dent J. 1989 Oct;3(2):2-8.
The location of the mental foramen in the horizontal plane was studied in 604 oblique lateral radiographs of the mandible. The foramen was related to the apex of the second premolar root in 55.63 percent of the radiographs, while 26.99 percent occurred in the interdental space between the first and second premolars. Location between the roots of the second premolar and first molar was observed in 12.25 percent while relationship to the roots of the first molar was found in 3.30 percent. Location around the apex of the first premolar accounted for 1.66 percent. Only one foramen (0.17 percent) was found mesial to the first premolar. The radiographs of the right and left sides were available for 277 patients. The location of the mental foramen was asymmetrical in 12.3 percent of these patients, the right foramen being more frequently located posteriorly than the left foramen. The prevalence of asymmetrical location of the foramen was more frequent in females in whom it occurred in 53 percent.
在604张下颌骨斜侧位X线片中研究了颏孔在水平面的位置。在55.63%的X线片中，颏孔与第二前磨牙根尖相关，而26.99%位于第一和第二前磨牙之间的牙间隙。12.25%观察到位于第二前磨牙和第一磨牙牙根之间，3.30%发现与第一磨牙牙根有关。第一前磨牙根尖周围的位置占1.66%。仅1个颏孔（0.17%）位于第一前磨牙近中。277例患者有左右两侧的X线片。这些患者中12.3%颏孔位置不对称，右侧颏孔比左侧颏孔更常位于后方。颏孔位置不对称在女性中更常见，发生率为53%。
