延边地区下颌前磨牙根管弯曲度的测量
摘要
130例延边地区患者被纳入研究,其中包括242颗下颌第一前磨牙和228颗下颌第二前磨牙,在CBCT图像测量中颊面观
及邻面观弯曲度。结果 下颌第一前磨牙颊面观平均弯曲度为 9.2°,下颌第二前磨牙颊面观平均弯曲度为 7.5°。两牙
邻面观弯曲度均显著小于颊面观(P < 0.01),两牙颊面观弯曲度差异无统计学意义(P > 0.05)。结论 下颌前磨牙根管
弯曲多发生于根中及根尖 1/3,冠 1/3 弯曲罕见。颊面观弯曲度显著大于邻面观,提示单一投照方向可能低估弯曲程
度,临床操作中需关注其器械应力集中与操作风险。
关键词
全文:
PDF镜像
|参考
[1]DUNCAN H F,GALLER K M,TOMSON P L,et al. European Society of Endodontology position statement:Management of deep
caries and the exposed pulp [J]. Int Endod J,2019,52(7):923-34.
[2]WEINE F S,KELLY R F,LIO P J. The effect of preparation procedures on original canal shape and on apical foramen shape [J]. J
Endod,1975,1(8):255-62.
[3]SLOWEY R R. Root canal anatomy. Road map to successful endodontics [J]. Dent Clin North Am,1979,23(4):555-73.
[4]SOUSA T O,HAITER-NETO F,NASCIMENTO E H L,et al. Diagnostic Accuracy of Periapical Radiography and Cone-beam Computed
Tomography in Identifying Root Canal Configuration of Human Premolars [J]. J Endod,2017,43(7):1176-9.
[5]GAMBARINI G,ROPINI P,PIASECKI L,et al. A preliminary assessment of a new dedicated endodontic software for use with CBCT
images to evaluate the canal complexity of mandibular molars [J]. Int Endod J,2018,51(3):259-68.
[6]SEGATO A V K,PIASECKI L,FELIPE IPARRAGUIRRE NUñOVERO M,et al. The Accuracy of a New Cone-beam Computed
Tomographic Software in the Preoperative Working Length Determination Ex Vivo [J]. J Endod,2018,44(6):1024-9.
[7]SCHNEIDER S W. A comparison of canal preparations in straight and curved root canals [J]. Oral Surg Oral Med Oral Pathol,1971,
32(2):271-5.
[8]SCHäFER E,DIEZ C,HOPPE W,et al. Roentgenographic investigation of frequency and degree of canal curvatures in human
permanent teeth [J]. J Endod,2002,28(3):211-6.
[9]许骏杨,陈明,杨叶青,et al. 锥形束 CT 分析下颌第一磨牙近中第三根管弯曲度 [J]. 南方医科大学学报,2018,38(07):824-9.
[10]PRUETT J P,CLEMENT D J,CARNES D L,JR. Cyclic fatigue testing of nickel-titanium endodontic instruments [J]. J Endod,
1997,23(2):77-85.
[11]PETERS O A. Current challenges and concepts in the preparation of root canal systems:a review [J]. J Endod,2004,30(8):559-67.
(1 摘要 Views, 4 PDF Downloads)
Refbacks
- 当前没有refback。