Propex根管测量仪临床应用操作分析  

Detailed study of the clinical application of Propex apex locator

作　　者：吉凯[1] 牛学刚[1] 孙力[1] 胡东升[1] 刘宝刚[2] 周珺[1] 

机构地区：[1]解放军总后勤部第一门诊部口腔科,主治医师北京100842 [2]解放军534医院口腔科,主治医师河南471003

出　　处：《中华老年口腔医学杂志》2011年第2期83-85,共3页Chinese Journal of Geriatric Dentistry

摘　　要：目的:探讨Propex根管测量仪临床操作中的具体细节,为更好的临床实践提供依据。方法:选取重度牙周炎需拔除的前牙150颗,分为三组:A组:牙髓活力正常者84例;B1组:牙髓无活力根尖周组织正常者37例;B2组:牙髓无活力根尖周组织有破坏者29例。以Propex根管测量仪和15号手用不锈钢K型锉测量工作长度,带锉拍摄X线片,拔牙后,观测锉尖端在根尖区位置。结果:锉尖端至解剖性根尖孔距离在A组与B1组两组间差别无统计学意义(P>0.05),两组在距解剖性根尖孔0.5mm-1mm;锉尖端至解剖性根尖孔距离A组与B2组以及B1组与B2组间差别均差异具有统计学意义(P<0.01),B2组即牙髓坏死合并根尖周组织有破坏时,距解剖性根尖孔大部分P<0.5mm,甚至穿出解剖性根尖孔。结论:Propex可准确定位生理性根尖孔,牙髓有无活力对定位无影响,但根尖周破坏时准确性降低。Objective：To study the clinical application of the Propex apex locator.Methods：One hundred and fifty anterior teeth suffered from serious periodontitis were divided into three groups：group A consisted of 84 cases with vital dental pulp;group B1 consisted of 37 cases with dead dental pulp and normal apical tissue;B2 consisted of 29 cases with dead dental pulp and abnormal apical tissue.Working length of each root canal was measured by Propex and k files.Then the X ray and extraction were taken.Following that,the measurements were performed to study the position of the file tips.Results：The distances from the file tip to the anatomic apical foramen were no significant difference between group A and group B1（P 0.05）.and there were significant differences between group A and group B2,group B1 and group B2,respectively（P 0.01）.Most of the distances from the file tip to the anatomic apical foramen in group A and B1 were between 0.5mm^1mm and most of the distances in group B2 were less than 0.5mm.Conclusion：The physiological apical foramen could be located precisely by Propex except in the condition of apical tissue damaged.

关 键 词：根管测量 工作长度 生理性根尖孔 解剖性根尖孔 

分 类 号：R781.05[医药卫生—口腔医学]