Spielman A I, Laufer D
J Am Dent Assoc. 1985 Dec;111(6):970. doi: 10.14219/jada.archive.1985.0226.
The foregoing case report describes a procedure that can be used to remove newly fractured roots. It is recommended that a Hedstrom file be used in cases in which the roots are loosened before they are fractured and provided that proper visibility and sufficient space in the root canal in which to introduce the file exist. This method, used alone or in combination with closed or open procedures, can be helpful for removing roots that are close to the maxillary sinus or mandibular canal. In the aforementioned case, the Hedstrom file's being threaded into the root tip was a safeguard against pushing the root tips into the surrounding anatomic structures. A method of using a Hedstrom file has been described for the removal of newly fractured root tips. If conditions are adequate, this method is simple and effective.
上述病例报告描述了一种可用于取出新折断牙根的方法。建议在牙根折断前已松动且根管内有适当视野和足够空间以插入锉的情况下使用赫氏锉。该方法单独使用或与封闭或开放手术联合使用，有助于取出靠近上颌窦或下颌管的牙根。在上述病例中，将赫氏锉旋入根尖可防止将根尖推入周围解剖结构。已描述了一种使用赫氏锉取出新折断根尖的方法。如果条件合适，该方法简单有效。
