中国实用口腔科杂志2018，Vol.11Issue(1)：32-36,5.DOI:10.19538/j.kq.2018.01.007
四种机用镍钛系统根管预备后牙本质微裂比较研究
Comparison of the dentinal microcracks after the root canal preparation by four kinds of Ni-Ti rotary instruments
王全禹 1毕婉婷 2薛明3
作者信息
- 1. 鞍钢集团总医院口腔科,辽宁鞍山114002
- 2. 中国医科大学口腔医学院·附属口腔医院,辽宁沈阳110002
- 3. 中国医科大学附属第一医院鞍山医院口腔科,辽宁鞍山114012
- 折叠
摘要
Abstract
Objective To compare the differences in the dentinal microcracks after the root canal preparation (RCP)by four kinds of Ni-Ti rotary instruments in vitro,so as to provide references for clinicians in the selection of instruments and methods during RCP.Methods A total of 125 complet incisors extracted from Jan.to Oct.of 2016 were selected as the research subjects,and they were divided into 5 groups on average according to the random table methed.Four kinds of Ni-Ti rotary instrument (Group N:ProTaper Next,Group W:WaveOne Gold,Group M:M3-Pro,Group P:ProTaper Universal)were respectively used for RCP,the remaining group being as the control group (Group C).The roots were cut horizontally at 3 mm,6 mm and 9 mm from the apices,and existence of dentinal microcracks were observed and recorded under the microscope.Results No dentinal microcracks were found in the control group without RCP.The number of teeth with microcracks in Group P was obviously higher than that in Group N,Group W and Group M.The total number of teeth with microcracks from the apical 3 mm was obviously higher than that from the apical 6 mm and 9 mm in all the preparation groups.Conclusion Dentinal microcracks may be caused during RCP using Ni-Ti instruments;the dentinal microcracks produced at 3 mm from the apical tip were significantly more than those at 6 mm and 9 mm;compared to ProTaper Universal,ProTaper Next,WaveOne Gold and M3-Pro can significantly reduce the incidence of dentinal microcracks.关键词
镍钛器械/根管预备/牙本质微裂/牙根纵裂Key words
Ni-Ti instrument/root canal preparation/dentinal microcrack/vertical root fracture分类
医药卫生引用本文复制引用
王全禹,毕婉婷,薛明..四种机用镍钛系统根管预备后牙本质微裂比较研究[J].中国实用口腔科杂志,2018,11(1):32-36,5.
