中国美容医学2024，Vol.33Issue(7)：60-64,5.
生物陶瓷封闭剂nRoot和生物陶瓷牙胶尖的根尖封闭性研究
Study on Apical Sealing Properties of Bioceramic Sealer nRoot and Bioceramic Gum Tips
摘要
Abstract
Objective To evaluate in vitro the apical sealing property of nRoot,a new domestic bioceramic root canal sealing agent,and the apical sealing property of bioceramic tooth adhesive tip when applying bioceramic root canal sealing agent,providing a theoretical basis for clinical material selection.Methods Single-canal premolars were randomly divided into four experimental groups and two control groups.The crowns were removed from the cemento-enamel junction.The root canal was prepared by gradual deepening technique,and then the root canal was obturated by using bioceramic sealant modified hot gutta-percha vertical compression filling technique recommended by Martin Trope.Group A:nRoot root sealer combined with bioceramical tooth tip.Group B:nRoot root canal sealer combined with common gum tip.Group C:iRoot SP root canal sealer combined with bioceramical tooth tip.Group D:iRoot SP root canal sealer combined with common gum tip.Group E and group F were positive control group and negative control group respectively.The apical closure of each group was observed by dye permeation method and scanning electron microscope.The longer the dye permeation length was,the wider the microgap was,the worse the apical closure was.Results Dye penetration test results show that,group A(2.455±0.137)mm,group B(2.830±0.148)mm,group C(2.426±0.130)mm,group D(2.774±0.163)mm.There was no significant difference between iRoot SP and nRoot(P＞0.05).There was a significant difference between bioceramics and common dental gums(P＜0.05),and the average value of dye Penetration of bioceramics dental gums was lower than that of common dental gums.There was no significant interaction between root canal sealant and gum tip(P＞0.05).Scanning electron microscopy results showed that micro-gaps of varying sizes were visible at the interface between filling materials and dental tissue in all groups.groups B and D with common gutta tips showed larger micro-gaps,while groups A and C with bioceramic gutta tiPs showed smaller micro-gaps.There was no significant difference in microgap width between group B and group D,and between group A and group C.Conclusion ①nRoot,a new bioceramics root canal sealer,has similar aPical closure as iRoot SP.②When using bioceramic root canal sealer,the aPical closure of bioceramic gutta-percha tips is better than that of common gutta-percha tips.③The effects of root canal sealant and gutta-percha tip on the apical closure were independent and did not interfere with each other.关键词
nRoot根管封闭剂/iRoot SP根管封闭剂/生物陶瓷牙胶尖/普通牙胶尖/根尖封闭性Key words
nRoot root canal sealer/iRoot SP root canal sealer/bioceramic gum tip/common gum tip/apical closure分类
医药卫生引用本文复制引用
王培儒,牛一山,武万超,韩宇环..生物陶瓷封闭剂nRoot和生物陶瓷牙胶尖的根尖封闭性研究[J].中国美容医学,2024,33(7):60-64,5.基金项目
2022年度自治区卫生健康科技计划项目(名称:两种根管分类系统应用于下颌第一磨牙 （）
编号:20211404) （）
