两种根管预备方法对后牙根管充填的疗效观察  

Curative effect observation of two kinds of root canal preparation for root canal filling on posterior teeth

作　　者：李江[1] 张恺[2] 

机构地区：[1]广东省中医院珠海医院口腔科,广东珠海519015 [2]广东中山大学光华口腔医学院附属口腔医院,广州510055

出　　处：《重庆医学》2014年第2期144-146,共3页Chongqing medicine

基　　金：国家自然科学基金资助项目(81000432)

摘　　要：目的评价机用ProTaper镍钛锉根备后对根管充填(简称根充)的影响。方法将30例磨牙、30例前磨牙的牙髓炎和根尖炎患者平均分为两组,A组30例用机用ProTaper镍钛锉进行根管预备,B组30例用普通K锉改良的逐步后退法进行根管预备。比较两组器械根备对根充的影响,分别从根充的时间、根备的主尖锉和根充的主牙胶尖的匹配度、根充的恰填率、根充的术后反应进行比较。结果在根充时间上A组平均前磨牙为1分30秒,磨牙为4分25秒;B组平均前磨牙为5分30秒,磨牙为11分41秒,差异有统计学意义(P<0.05)。A组前磨牙主尖锉和主牙胶尖的匹配度为86.37%,磨牙为88.89%;而B组前磨牙为62.50%,磨牙为26.67%,差异有统计学意义(P<0.05)。根充恰填率在X线片上前磨牙A组为72.73%,B组为70.83%;磨牙A组为80.00%,B组为77.78%,差异无统计学意义(P>0.05);根充的术后疼痛反应上两者都很低且弱,差异无统计学意义(P>0.05)。结论机用ProTaper镍钛锉根备后能加快根充速度,提高主尖锉和主牙胶尖的匹配度,简化根充治疗程序。Objective To evaluate the influence of ProTaper rotary nickel-titanium files root preparation on root canal filling. Methods 30 cases of molars pulpitis and 20 cases of premolars pulpitis or periapical periodontitis were equally divided into two groups. The group A（30 cases） used the ProTaper rotary nickel titanium files in root canal preparation and the group B（30 cases） adopted the common K files modified step-back technique for root canal preparation. The influence of the root preparation by 2 sets of apparatus on the effect of root canal filling, and the several aspects of the root canal filling time, the matching degree of main root canal file and master gutta-percha, proper filling rate, postoperative reaction of root canal filling were compared for conducting the e- valuation. Results In the mean root canal filling time of the group A,average premolar time was 4 min 25 s and molar was 1 rain 30 s,however in the group B,average premolar was 5 min 30 s and molar was 11 min 41 s,the time in the group A was greatly short- ened with statistical difference（P〈0. 05） ;the matching degree of main root canal file and master gutta-percha in the group A was 86.37% for premolar and 88.89% for molar,however in the B group,which was 62.50% for premolar and 26.67% for molar,the matching degree in the group A was greatly improved with statistical difference between them（P〈0.05） ;the proper filling rate of upper premolar from the X ray film was 72.73% in the group A and 70.83~ in the group B,while which of molar was 80.0% in the group A and 77.78% in the group B,here was no statistical difference between themtP〉0.05） ;the postoperative pain reaction of root canal filling in both groups were very low and weak without statistical difference. Conclusion The ProTaper rotary nickel- titanium files root preparation can accelerate the root canal filling speed,improve vhe matching degree of main root canal files and master gutta percha and simplify the root filling therapy procedure.

关 键 词：机用ProTaper镍钛锉 K锉 根管充填 匹配度 

分 类 号：R781.05[医药卫生—口腔医学]