Al-Khateeb Taiseer, Al-Hadi Hamasha Abed, Ababneh Khansa Taha
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.
Surg Radiol Anat. 2007 Apr;29(3):231-7. doi: 10.1007/s00276-007-0199-z. Epub 2007 Mar 21.
The mental foramen is frequently encountered in a number of maxillofacial surgical procedures. Its position has been shown to vary according to race. The aim was to study the position, shape, and appearance of the mental foramen, as seen on panoramic radiographs of Jordanians, and to compare our findings with international values.
Panoramic radiographs were randomly selected from the records of dental patients attending three dental services, and were analyzed according to patients' age and gender, and the mental foramina's anterior-posterior and superior-inferior positions, shape, appearance, and symmetry.
There were 860 cases (1,720 sides) with a female-to-male ratio of 1:1.4, and mean age of 24. The most frequent anterior-posterior position was in the area between the long axes of first and second mandibular premolar teeth. With advancing age, there was an increase in the frequency of more posterior positioning. The anterior-posterior position was asymmetrical in 33% of cases. The most frequent superior-inferior position was below the level of apices of mandibular premolar teeth roots. With advancing age there was an increase in the frequency of more inferior positioning. The superior-inferior position was asymmetrical in 14% of cases. The majority of foramina were round in shape, and the most frequent appearance was the continuous type. Accessory mental foramina were seen in 10% of the cases.
The position of the mental foramen on panoramic radiographs in this selected group of Jordanians is most commonly below and between the mandibular premolar teeth, and the most frequent appearance was the continuous type. These results are similar to previous findings in Caucasian populations.
颏孔在许多颌面外科手术中经常会遇到。其位置已显示会因种族不同而有所变化。目的是研究约旦人全景X线片上颏孔的位置、形状和外观，并将我们的研究结果与国际数据进行比较。
从三家牙科诊所就诊的牙科患者记录中随机选取全景X线片，根据患者的年龄和性别以及颏孔的前后和上下位置、形状、外观及对称性进行分析。
共860例（1720侧），男女比例为1:1.4，平均年龄24岁。最常见的前后位置是在下颌第一和第二前磨牙长轴之间的区域。随着年龄增长，更靠后的位置出现频率增加。33%的病例前后位置不对称。最常见的上下位置是在下颌前磨牙牙根根尖水平以下。随着年龄增长，更低位置的出现频率增加。14%的病例上下位置不对称。大多数孔为圆形，最常见的外观类型是连续型。10%的病例可见副颏孔。
在这组选定的约旦人中，全景X线片上颏孔的位置最常见于下颌前磨牙下方及之间，最常见的外观类型是连续型。这些结果与之前在白种人群中的发现相似。
