Fanourakis J, Kamberos S, Kolokoudias M, Zografos J
Faculty of Dentistry, University of Athens, Greece.
Hell Period Stomat Gnathopathoprosopike Cheir. 1990 Sep;5(3):115-9.
Preoperative planning of surgical extraction of a wisdom tooth is always necessary. Accurate evaluation of its position and relation to the other surrounding anatomical structures is facilitated by radiographic examination. Nine hundred sixty one radiographs of patients who came to the clinic of Exodontia and Radiology were used. Of these radiographs one thousand hundred thirty six impacted and partially impacted mandibular third molars and its relation to the second molar and the anterior border of the ramus were studied. The distance between the anterior border of the ramus and the posterior surface of the second molar in comparison to the crown diameter of the studied wisdom tooth was equal in 12.68 percent, smaller in 66.55 percent (P less than 0.0001) and larger in 20.77 percent. Most of the impacted third molars were located mesio angularly (42.34%, P less than 0.0001), 21.13% were vertical, 20.60% horizontal and 2.73% lingo-angular.
智齿手术拔除的术前规划总是必要的。通过影像学检查有助于准确评估其位置以及与其他周围解剖结构的关系。使用了961例前来牙外科和放射科诊所就诊患者的X光片。在这些X光片中，研究了1136颗阻生和部分阻生下颌第三磨牙及其与第二磨牙和下颌支前缘的关系。下颌支前缘与第二磨牙后表面之间的距离与所研究智齿的牙冠直径相比，相等的占12.68%，较小的占66.55%（P小于0.0001），较大的占20.77%。大多数阻生第三磨牙呈近中角位（42.34%，P小于0.0001），垂直位占21.13%，水平位占20.60%，舌侧角位占2.73%。
