前牙、双尖牙唇(颊)侧面开髓位置的临床研究

Clinical study of opening marrow site in front teeth or bicuspid from lip(cheek)side

目的:了解前牙、双尖牙唇(颊)侧面开髓位置的临床应用的效果。方法:对264例前牙、双尖牙因楔形缺损或唇(颊)龋病并发牙髓炎、尖周炎的患者分为两组,试验组采用唇(颊)侧面位置进行开髓;对照组用传统方式(即舌或面)开髓方法。结果:试验组,抗剪切力大,牙体不易劈折,成功率97.05%,对照组成功率30.40%(P<0.05)。结论:前牙、双尖牙唇(颊)侧面开髓位置只是一种针对前牙、双尖牙唇、颊面牙颈部深龋或楔形缺损引起牙髓及根尖感染、需要根管治疗的改进一种新开髓位置的方法,但不适应上颌第一双尖牙。

Objective To investigate the clinical effect of opening marrow site in front teeth or bicuspid from lip （cheek）side.Methods 264 cases with wedge deformation or dental caries in combination with endodontitis or/and peridentitis in front teeth or bicuspid were divided into two groups：experimental group and control group.Tooth marrow was opened from lip （cheek）side in experimental group,while it was opened from tongue or occlusion side in control group.Results Tooth being opened had big shearing force and it was hard to get broken or get cleaved in experimental group.Success rate in experimental group was 97.05％ and it was 30.40％ in control group （P＜0.05）.Conclusion The new method of opening marrow site in front teeth or bicuspid from lip （cheek）side is only feasible for infection of tooth marrow and of root apex caused by wedge deformation or belowneck dental caries which need root canal treatment.But this method is not suitable for first bicuspid of maxilla.