机用ProTaper根管预备附加不同超声冲洗液对根管显微硬度的影响

上海口腔医学 ›› 2015, Vol. 24 ›› Issue (4): 451-454.

机用ProTaper根管预备附加不同超声冲洗液对根管显微硬度的影响

郭姜莉¹, 章燕², 甄蕾¹

1.上海市口腔病防治院牙体牙髓病科,上海 200001; 2.同济大学附属口腔医院口腔生物医学及转化医学实验室,上海 200072

收稿日期:2014-12-15 出版日期:2015-08-20 发布日期:2015-09-10
作者简介:郭姜莉（1977-）,女,硕士,主治医师,

Influence of different ultrasonic irrigation solutions after root canal preparation with ProTaper by machine on micro-hardness of root canal dentin

GUO Jiang-li¹, ZHANG Yan², ZHEN Lei¹

1.Department of Endodontics, Shanghai Municipal Hospital for Oral Health. Shanghai 200001; 2. Oral Biomedical and Transformation of Medical Laboratory, Stomatological Hospital Affiliated to Tongji University. Shanghai 200072, China

Received:2014-12-15 Online:2015-08-20 Published:2015-09-10

摘要/Abstract

摘要： ]目的：探讨机用镍钛ProTaper根管预备附加不同超声冲洗液对根管壁牙本质显微硬度的影响。方法收集60颗离体单根管上颌前牙,随机分为6组,A组为对照组,B组应用机用镍钛ProTaper根管预备至F3,C组预备后附加3%过氧化氢溶液超声冲洗1 min,D组预备后附加口泰漱口液超声冲洗1 min,E组预备后附加17%EDTA溶液超声冲洗1 min,F组预备后附加蒸馏水超声冲洗1 min。将每个牙根平均横截为根上、根中和根尖 3 段,再纵向劈开,用显微硬度仪分别测量各组根管壁显微硬度。采用SPSS 17.0软件包对数据进行统计学分析。结果A组根管各处的显微硬度分别为（52.66±1.64）HV、（52.08±1.53）HV和（51.47±2.53）HV,差异无显著性（P>0.05）,其他各组的根尖1/3显微硬度均低于根颈和根中1/3,差异显著（P<0.05）。在根颈1/3和根中1/3,E组显微硬度分别为（44.65±1.33）HV和（42.55±1.12）HV,与其他各组相比,差异显著（P<0.05）。在根尖1/3,E组显微硬度为（37.82±1.60）HV,下降最为显著,其次为C组,显微硬度为（44.14±1.73）HV。B组、D和F组之间相比,无显著性差异（P>0.05）。结论机用镍钛ProTaper根管预备至F3可使根尖1/3显微硬度下降。17%EDTA溶液超声冲洗1 min可使根管各部显微硬度下降, 3%过氧化氢可使根尖1/3显微硬度下降,口泰漱口液和蒸馏水对根管各部牙本质显微硬度值无明显影响。

关键词: 镍钛ProTaper, 显微硬度, 乙二胺四乙酸, 氯已定

Abstract: PURPOSE: To develope the influence of different ultrasonic irrigations after root canal preparation with nickel titanium ProTaper on micro-hardness of root canal dentin. METHODS: Sixty of maxillary anterior teeth with single-canal were collected and randomly divided into 6 groups. Group A was control group, group B was prepared to F3 with nickel titanium ProTaper by machine, group C was ultrasonic irrigated with 3% hydrogen peroxide solution for 1 minute after preparation, group D was ultrasonic irrigated with koutai mouthwash for 1 minute after preparation, group E was ultrasonic irrigated with 17% EDTA solution for 1 minute after preparation, group F was ultrasonic irrigated with distilled water for 1 minute after preparation. The roots were then sectioned horizontally into 3 parts,split longitudinally into halves and examined under a micro Vickers hardness test machine. The data was analyzed by one-way ANOVA and t test with SPSS 17.0 software package. RESULTS: The micro-hardness of group A was(52.66±1.64) HV,(52.08±1.53）HV and（51.47±2.53）HV. There was no significant difference in all parts of the root canal in group A(P>0.05). The micro-hardness of the apical third of root canal was lower than that of the cervical and middle of root canal in the other groups (P<0.05). In the cervical and middle third of the root canals, the micro-hardness of group E was(44.65±1.33) HV and(42.55±1.12) HV, and there were statistical significances between group E and the other groups（P<0.05）.In the apical third of root canal,the micro-hardness of group E was (37.82±1.60）HV, and group C was (44.14±1.73) HV, both of the comparative differences with other groups were statistically significant (P<0.05). There was no significant difference among group B, group D and group F (P>0.05). CONCLUSIONS: Root canal preparation to F3 with nickel titanium ProTaper by machine can make the micro-hardness of the apical third of root canal decrease. Ultrasonic irrigation with 17% EDTA solution for 1 minute can make the micro-hardness of the root canal decrease ultrasonic irrigation with. Ultrasonic irrigation with 3% hydrogen peroxide can make the micro-hardness of the apical third of root canal decrease. Ultrasonic irrigation with Koutai mouthwash and distilled water for 1 minute have no influence on the micro-hardness of root canal.

Key words: Nickel-titanium ProTaper, Micro-hardness, Ethylenediamine tetraacetic acid, ChlorhexidineShanghai J Stomatol, 2015, 24(4):451-454.

中图分类号:

郭姜莉, 章燕, 甄蕾. 机用ProTaper根管预备附加不同超声冲洗液对根管显微硬度的影响[J]. 上海口腔医学, 2015, 24(4): 451-454.

GUO Jiang-li, ZHANG Yan, ZHEN Lei. Influence of different ultrasonic irrigation solutions after root canal preparation with ProTaper by machine on micro-hardness of root canal dentin[J]. Shanghai Journal of Stomatology, 2015, 24(4): 451-454.

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