不同根管冲洗针头对S形弯曲根管冲洗效果的影响

doi:10.13701/j.cnki.kqyxyj.2023.01.006

摘要/Abstract

摘要： 目的:比较临床常用的2种冲洗针头对S形弯曲根管冲洗效果的影响。方法:采用80个树脂模拟弯曲S形根管,随机分成两组:IrriFlex组(A组)和NaviTip FX组(B组),分别预备至25^#0.06锥度和30^#0.04锥度各40个。根据根管冲洗针头、冲洗位置和预备形态分为A1组(IrriFlex,最大冲洗深度,25^#0.06锥度)、B1组(NaviTip FX,最大冲洗深度,25^#0.06锥度)、A2组(IrriFlex,最大冲洗深度,30^#0.04锥度)、B2组(NaviTip FX,最大冲洗深度,30^#0.04锥度)、A3组(IrriFlex,距根尖孔4 mm,25^#0.06锥度)、B3组(NaviTip FX,距根尖孔4 mm,25^#0.06锥度)、A4组(IrriFlex,距根尖孔4 mm,30^#0.04锥度)、B4组(NaviTip FX,距根尖孔4 mm,30^#0.04锥度),每组10个样本。先将1 mL亚甲蓝染色剂匀速注入树脂根管内,每根管使用3 mL 3%NaClO溶液匀速冲洗。在针头进入根管但尚未注射亚甲蓝时和注射亚甲蓝并冲洗完成后,使用牙科显微镜分别拍照,测量针头到根尖孔的距离及根尖部残留亚甲蓝的长度。采用SPSS 25.0软件对数据进行统计学分析。结果:在最大冲洗深度进行冲洗时,IrriFlex组均较NaviTip FX组深入距离根尖孔更近的位置(P<0.001),根尖部残余亚甲蓝的长度均显著减短(P<0.001);IrriFlex组中,两种终末预备号数对冲洗效果无显著影响(P>0.05) ,而NaviTip FX组中,25^#0.06锥度较30^#0.04锥度残余亚甲蓝的长度稍短(P<0.05)。当距根尖孔4 mm进行冲洗时,IrriFlex组与NaviTip FX组残留亚甲蓝长度无显著差异(P>0.05),25^#0.06锥度亚组较30^#0.04锥度亚组残余亚甲蓝的长度稍短(P<0.05)。结论:S形弯曲根管中,IrriFlex较NaviTip FX更有利于深入根管内进行冲洗。在选择使用NaviTip FX时,可考虑适当加大根管锥度以达到更好的冲洗效果。

关键词: 根管冲洗, S形弯曲根管, 根管预备形态, NaviTip FX, IrriFlex

Abstract: Objective: To compare the irrigating effect using two commonly used irrigating needles inside a S-shaped curved root canals. Methods: Eighty resin simulated curved S-shaped root canals were randomly divided into two groups: IrriFlex group (group A) and NaviTip FX group (group B), with 40 prepared to 25^#0.06 taper and 30^#0.04 taper, respectively. Group A1 (IrriFlex, maximum irrigation length, 25^#0.06 taper), group B1(NaviTip FX, maximum irrigation length, 25^#0.06 taper), group A2 (IrriFlex, maximum irrigation length, 30^#0.04 taper), group B2 (NaviTip FX, maximum irrigation length, 30^#0.04 taper), groupA3 (IrriFlex, 4 mm from apical foramen, 25^#0.06 taper) and group B3 (NaviTip FX, 4 mm from apical foramen, 25^#0.06 taper), group A4 (IrriFlex, 4 mm from apical foramen, 30^#0.04 taper), and group B4 (NaviTip FX, 4 mm from apical foramen, 30^#0.04 taper), with 10 samples in each group (n=10). The 3 mL 3 %NaClO was used as irrigation solution to rinse root canals which filled with 1 mL methylene blue stain.After taking pictures with a dental microscope,the images were measured to obtain the distance from the tip to the apical foramen and the length of the methylene blue remaining in the apical region. SPSS 25.0 software package was used for statistical analysis. Results: When IrriFlex group was irrigated at the maximum irrigation length, the depth of IrriFlex group was closer to the apical foramen than NaviTip FX group (P<0.001), and the length of residual methylene blue in the apical region was significantly shorter (P<0.001). In the IrriFlex group, the two terminal preparation numbers had no significant effect on the irrigating effect (P>0.05), while in the NaviTip FX group, the length of residual methylene blue in the 25^#0.06 taper was slightly shorter than that in the 30^#0.04 taper (P<0.05). When irrigating at 4 mm from apical foramen, there was no significant difference in the length of residual methylene blue between the IrriFlex group and the NaviTip FX group (P>0.05), and the length of residual methylene blue in the 25^#0.06 taper subgroup was slightly shorter than that in the 30^#0.04 taper subgroup (P<0.05). Conclusion: In S-shaped curved root canals, IrriFlex is more convenient for further irrigating than NaviTip FX. Increased final preparation taper were suggested when using NaviTip FX to abtain better irrigation effect.

Key words: root canal irrigation, S-shaped curved root canal, root canal preparation morphology, NaviTip FX, IrriFlex

汤雨牧, 陆乐, 许可, 陈於茂. 不同根管冲洗针头对S形弯曲根管冲洗效果的影响[J]. 口腔医学研究, 2023, 39(1): 32-36.

TANG Yumu, LU Le, XU Ke, CHEN Yumao. Effect of Irrigating Needles on Irrigating Effect of S-shaped Curved Root Canal[J]. Journal of Oral Science Research, 2023, 39(1): 32-36.

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