临床口腔医学杂志2025，Vol.41Issue(11)：643-647,5.DOI:10.3969/j.issn.1003-1634.2025.11.002
新型梯度柔性镍钛锉对重度弯曲根管模型的预备效果研究
Effect of a novel gradients flexible nickel-titanium file on the preparation in severely curved root canals
摘要
Abstract
Objective:To compare the preparation effects of the novel gradients flexible nickel-titanium file GF-FILE(GF)and the mechanized nickel-titanium instrument ProTaper Universal(PTU)in severely curved root canals,providing a reference for clinical application.Methods:A total of 40 3D-printed curved root canals with curvatures of 30°and 50°were designed and produced,evenly divided into four groups(30°GF-FILE group,30°PTU group,50°GF-FILE group,50°PTU group).The root canals were scanned using small field-of-view cone-beam CT(CBCT)before and after preparation.Three-di-mensional reconstruction was performed for measurement and comparison,and the root canal cleanliness and canal transporta-tion after preparation were calculated.Results:In both the 30°and 50°root canal models,there was no significant difference in cleanliness between the GF and PTU groups(P＞0.05).In both the 30°and 50°root canal models,the average maximum deviation in the PTU group was significantly higher than that in the GF group(P＜0.05).Conclusion:In the preparation of severely curved root canals,GF-FILE and ProTaper Universal demonstrate comparable cleanliness,but GF-FILE produce less canal deviation.关键词
CBCT/3D打印/根管预备/弯曲根管/根管清洁/根管偏移Key words
Cone-beam CT(CBCT)/3D printing/Root canal preparation/Curved root canal/Root canal cleanliness/Canal deviation分类
口腔医学引用本文复制引用
刘爱丽,陈希瑶,张卓扬,王易维,王瑛,唐子圣..新型梯度柔性镍钛锉对重度弯曲根管模型的预备效果研究[J].临床口腔医学杂志,2025,41(11):643-647,5.基金项目
国家重点研发计划项目(编号2022 YFC2402105) （编号2022 YFC2402105）
上海交通大学医学院附属新华医院"学科攀峰计划"项目(XKPF2024 B50021,XKPF2024 B50024) （XKPF2024 B50021,XKPF2024 B50024）
