In vitro study on cleaning effect of different rinsing agents combined with ultrasonic swaging on root canal wall and dentin mi-crostructure
10.13591/j.cnki.kqyx.2025.03.008
- VernacularTitle:不同冲洗剂联合超声荡洗对根管壁清洁效果及牙本质结构影响的体外研究
- Author:
Bingjie SHUAI
1
;
Hao ZHANG
1
;
Yongqing ZHOU
1
Author Information
1. 十堰市人民医院(湖北医药学院附属人民医院)口腔科,湖北十堰(442000)
- Publication Type:Journal Article
- Keywords:
root canal irrigation;
smear layer;
dentin
- From:
STOMATOLOGY
2025;45(3):204-209
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of sodium hypochlorite and Ultra Clean on root canal cleaning and dentin structure.Methods A total of 129 single canal isolated teeth were collected and root canal was prepared to M # with Waveone Gold nickel titani-um file.After preparation,they were divided into 3 groups by random number table according to irrigant:group A sodium hypochlorite+normal saline,group B sodium hypochlorite+EDTA,and group C sodium hypochlorite+Ultra Clean.The dye was stained with 1％methylene blue solution,and the penetration depth and range of the dye solution were observed under a type microscope.The removal of debris and stain layer in the root canal was observed by digital camera and scanning electron microscope.The change of dentin micro-structure was analyzed by Fourier infrared spectrometer.Results In the upper middle part of the root canal,the penetration depth and range of group C were greater than those of groups A and B(P＜0.05);the percentage of debris in group C was lower than that of groups A and B(P＜0.05),and the stain layer score in groups B and C was lower than that of group A(P＜0.05).In the lower root ca-nal segment,groups B and C were superior to group A in the evaluation of permeability,debris and stain removal(P＜0.05).The demineralization ability and exposure of dentin collagen fiber in group C were higher than those in group A and blank group(P＜0.05).Conclusion Sodium hypochlorite combined with Ultra Clean is considered to have good cleaning effect and strong demineralization ability,but it may slightly increase the exposure of organic matter such as collagen fiber.
