3种根管封闭剂根尖封闭性能的Micro-CT研究

doi:10.13591/j.cnki.kqyx.2024.06.008

摘要/Abstract

摘要：

目的使用微计算机断层扫描技术(micro-computed tomography,Micro-CT)分析比较3种根管封闭剂(C-Root SP、iRoot SP和AH-Plus Jet)在单尖法根管充填中对根管充填封闭性能。方法收集90颗符合纳入标准的下颌单根管离体前磨牙,使用ProTaper Next预备至X3,然后随机分为3个实验组C-Root SP组(A组)、iRoot SP组(B组)、AH-Plus Jet组(C组),均采用单尖法进行根管充填,并进行1周的口腔环境模拟,最后用Micro-CT测量根管内气泡体积及其所占比例来评价比较3种根管封闭剂的封闭性能。结果 A、B、C组在根管的不同部位(下1/3段、中1/3段、上1/3段)均存在可识别的气泡。在下1/3段中,A组的气泡体积(0.01±0.01)mm³与C组(0.12±0.08)mm³相比存在统计学差异(P<0.05),与B组(0.02±0.01)mm³相比则没有统计学差异;在中1/3段与上1/3段,组间无统计学差异。在根管全长范围内,A组的气泡总体积最小(0.15±0.03)mm³,B、C两组分别为(0.22±0.11)mm³、(0.34±0.28)mm³,A组与B组相似,均优于C组。结论 C-Root SP的根尖封闭性能与iRoot SP接近,且优于AH-Plus Jet,C-Root SP可以作为良好的根管封闭剂选择。

关键词: C-Root SP, iRoot SP, AH-Plus Jet, Micro-CT, 根管封闭剂

Abstract:

Objective To evaluate and compare the impact of three root canal sealers (C-Root SP, iRoot SP, and AH-Plus Jet) on the sealing performance in single-cone root canal filling using micro-computed tomography (Micro-CT). Methods Ninety mandibular single-rooted extracted teeth meeting inclusion criteria were collected, prepared with Protaper Next up to X3, and randomly assigned to three experimental groups which were C-Root SP group (Group A), iRoot SP group (Group B), and AH-Plus Jet group (Group C). Subsequently, all three groups underwent single-cone root canal filling, followed by one week of oral environment simulation. The sealing performance of the three root canal sealers was evaluated by measuring the proportion of the root canal volume and its rate using Micro-CT. Results In different segments of the roots (upper 1/3, middle, and lower), identifiable bubbles were observed in the Group A, Group B and Group C, with volumes of (0.15±0.03)mm³, (0.22±0.11)mm³, and (0.34±0.28) mm³, respectively. Overall, Group A exhibited the smallest bubble volume (0.15±0.03) mm³. Group A and B were similar, they were superior to group C. (P<0.05) Nevertheless, in the apical 1/3 segment (0-3 mm), a significant statistical difference was observed between the bubble volumes of Group A (0.01±0.01)mm³ and Group C (0.12±0.08)mm³ (P<0.05), while no significant difference was observed compared to Group B. Conclusion The apical sealing performance of C-Root SP is similar to iRoot SP and superior to AH-Plus Jet. C-Root SP can be considered as a favorable choice for root canal sealer.

Key words: C-Root SP, iRoot SP, AH-Plus Jet, Micro-CT, root canal sealer

中图分类号:

R781.05

赵麒桐, 王艳茹, 张敏, 张琪, 李谨, 雷港. 3种根管封闭剂根尖封闭性能的Micro-CT研究[J]. 口腔医学, 2024, 44(6): 443-447.

ZHAO Qitong, WANG Yanru, ZHANG Min, ZHANG Qi, LI Jin, LEI Gang. Sealing performance of three root canal sealers in vitro: A Micro-CT study[J]. Stomatology, 2024, 44(6): 443-447.

图/表 3

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分组	根管分段	根管封闭剂	气泡	牙胶
A组	0~3 mm	0.07±0.02	0.01±0.01	0.72±0.05
	3~6 mm	0.09±0.03	0.05±0.01	0.94±0.04
	6~9 mm	0.11±0.06	0.09±0.01	1.26±0.20
	合计	0.27±0.11	0.15±0.03	2.92±0.34
B组	0~3 mm	0.05±0.05	0.02±0.01	0.74±0.07
	3~6 mm	0.08±0.03	0.07±0.04	0.90±0.22
	6~9 mm	0.12±0.09	0.13±0.15	1.30±0.28
	合计	0.25±0.18	0.22±0.11	2.94±0.47
C组	0~3 mm	0.14±0.10	0.12±0.10^*	0.69±0.08
	3~6 mm	0.12±0.11	0.10±0.08	0.85±0.08
	6~9 mm	0.22±0.18	0.12±0.13	1.18±0.09
	合计	0.48±0.39	0.34±0.28	2.72±0.24