单根锉WaveOne镍钛器械高效治疗弯曲根管的实验研究

发布时间：2018-11-03 12:03

【摘要】：目的研究单根锉Wave One镍钛器械治疗弯曲根管的疗效,并与不锈钢K锉、Pro Taper镍钛器械进行比较。方法选取根管弯曲度在20~40°的单根管离体前磨牙60颗,随机分为A、B、C 3组,每组20颗离体牙,3组分别采用Wave One/Crown-down法、K锉逐步后退法及Pro Taper/Crown-down法行根管预备,并采用口腔颌面锥形束计算机体层摄影分别于根管预备前后对离体牙行横向扫描。预备完成后,对3组中的60颗离体牙行冷牙胶侧方加压充填。测量3组中每颗离体牙的根管预备时间、根管充填时间;分析每颗离体牙根管预备前后,根管距根尖孔2、4和6 mm处的根管偏移量和轴中心率,并对以上结果进行统计学分析。结果 A组根管预备时间低于B、C组;在根管充填时间上,A组与C组比较差异无统计学意义(P0.05),但A组短于B组(P0.05)。在距根尖孔2、4和6 mm处,A组与B组间的根管偏移量及轴中心率比较,差异有统计学意义(P0.05);A组与C组比较,差异无统计学意义(P0.05)。结论与不锈钢K锉及Pro Taper相比,Wave One治疗弯曲根管具有效率高、根管成形效果好的优点,可广泛应用于临床弯曲根管的治疗。
[Abstract]:Objective to study the effect of single file Wave One nickel titanium instrument on curved root canal and compare it with stainless steel K file, Pro Taper nickel titanium instrument. Methods A total of 60 single canals premolars with a curvature of 2040 掳were randomly divided into three groups: group A (n = 20) and group C (n = 20). Wave One/Crown-down method was used in each group. K file and Pro Taper/Crown-down method were used to prepare root canal, and lateral scanning of isolated teeth was performed before and after root canal preparation by computer tomography of oral and maxillofacial conical bundle. After preparation, 60 isolated teeth in 3 groups were filled with cold gum side compression. The root canal preparation time and root canal filling time of each isolated tooth in the three groups were measured, and the root canal offset and axial center rate between the root canal and the apical foramen 2 and 6 mm before and after the root canal preparation were analyzed statistically. Results the time of root canal preparation in group A was lower than that in group B, and there was no significant difference between group A and group C in root canal filling time (P0.05), but the time of root canal preparation in group A was shorter than that in group B (P0.05). At 2 and 6 mm from the apical foramen, the root canal deviation and axial center rate between group A and group B were significantly different (P0.05 compared with group C, P0.05). Conclusion compared with stainless steel K file and Pro Taper, Wave One has the advantages of high efficiency and good root canal forming effect, and can be widely used in the treatment of clinical curved root canal.
【作者单位】：锦州医科大学上海市奉贤区中心医院研究生培养基地;上海交通大学附属第六人民医院南院口腔科;
【分类号】：R781.05

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