LaTurno S A, Zillich R M
Oral Surg Oral Med Oral Pathol. 1985 Apr;59(4):418-9. doi: 10.1016/0030-4220(85)90069-6.
Straight-line access provides an unimpeded pathway for endodontic procedures. One hundred ninety-eight anterior teeth were examined to determine the location of the access preparation which would allow straight-line access for intracanal procedures. A radiographic analysis of these teeth indicated that a more labial orientation of the access opening would provide straight-line access to the canal more consistently than the "traditional" lingual access opening. The more labial placement of the access opening on maxillary or mandibular anterior teeth which will require full coverage will make endodontic treatment more efficient and may, therefore, increase endodontic success rates in these teeth.
直线入路为根管治疗程序提供了一条畅通无阻的通道。对198颗前牙进行了检查，以确定能为根管内操作提供直线入路的开髓孔位置。对这些牙齿的影像学分析表明，与“传统”舌侧开髓孔相比，开髓孔更偏向唇侧的方向能更一致地提供进入根管的直线入路。对于需要全冠修复的上颌或下颌前牙，将开髓孔更偏向唇侧放置会使根管治疗更高效，因此可能会提高这些牙齿的根管治疗成功率。
