华西口腔医学杂志

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根管冲洗液和黏结剂对金属桩核黏固后根管微渗漏影响的析因分析

郑政1 刘翠玲2 蓝菁1 高旭1   

  1. 1.山东大学口腔医院修复科,山东省口腔生物医学重点实验室;2.山东大学齐鲁医院口腔修复科,济南 250012
  • 出版日期:2014-06-01 发布日期:2014-06-01
  • 通讯作者: 高旭,副教授,博士,E-mail:gaoxu@sdu.edu.cn
  • 作者简介:郑政,硕士,E-mail:vivian.zzjj@163.com

Factorial analysis of root canal irrigants and cements on coronal microleakage after cementing metal post-cores

Zheng Zheng1, Liu Cuiling2, Lan Jing1, Gao Xu1.   

  1. 1. Dept. of Prosthodontics, Stomatology Hospital of Shandong University; Shandong Provincial Key Laboratory of Oral Biomedicine, Jinan 250012, China; 2. Dept. of Prosthodontics, Qilu Hospital, Shandong University, Jinan 250012, China
  • Online:2014-06-01 Published:2014-06-01

摘要:

目的  探讨根管冲洗液和黏结剂对金属桩核黏固后根管冠方微渗漏的影响,以及二者对于根管冠方微渗漏的交互作用。方法 采用两因素析因设计方法,将90颗完成根管充填的离体下颌前磨牙进行桩道预备,经常规制作钴铬桩核后,分为6组,每组15颗。根管冲洗液(因素A)选取3种:A1为无冲洗液(75%乙醇棉球清洁),A2为3%H2O2+0.9%NaCl溶液,A3为15%乙二胺四乙酸(EDTA)+5.25%NaClO溶液;黏结剂(因素B)选取2种:B1为聚羧酸锌水门汀,B2为玻璃离子水门汀。按照A1B1、A1B2、A2B1、A2B2、A3B1、A3B2分别对6组进行处理,桩核黏固完成后的所有样本浸泡于印度墨水中3周,然后沿颊舌向中线位置纵行劈开,在体视显微镜下拍照并测量染料渗入根管的最大长度,以此评价微渗漏的大小。采用SPSS 13.0软件对结果进行析因分析。结果  A1B1、A1B2、A2B1、A2B2、A3B1、A3B2组染料渗入长度分别为(1 192.59±417.84)、(1 317.38±527.35)、(1 429.33±482.68)、(1 026.79±459.49)、(1 448.29±561.02)、(1 922.47±678.86)μm,A2B2组微渗漏程度最轻,A3B2组最重;不同冲洗液之间微渗漏的差异有统计学意义(P<0.05),不同黏结剂之间的差异没有统计学意义(P>0.05),但根管冲洗液和黏结剂对于微渗漏的发生有交互作用(P<0.05)。结论 黏固金属桩核时,3%H2O2+0.9%NaCl溶液冲洗根管联合玻璃离子水门汀黏结剂在减少微渗漏的发生方面有一定优势;15%EDTA和5.25%NaClO联合玻璃离子水门汀会加重根管微渗漏的发生。

关键词: 析因分析, 微渗漏, 根管冲洗剂, 黏结剂

Abstract:

Objective  To evaluate the effect of different root canal irrigants and cements on coronal microleakage and the interaction effects after cementing metal post-cores. Methods  Ninety newly extracted single-rooted mandibular human premolars were endodontically treated. Post spaces were prepared in the root canals, and Co-Cr post-cores were cast routinely. The specimens were randomly divided into six groups (n=15) via a two-way factorial design method. The irrigant factors (A) included A1: no irrigant (75% alcohol wiping), A2: 3% H2O2+0.9% NaCl, and A3: 15% ethylenediamine tetraacetic acid (EDTA)+5.25% NaClO. The cement factors (B) included B1: zinc polycarboxylate cement, and B2: glass ionomer cement. The specimens received treatments based on the grouping of A1B1, A1B2, A2B1, A2B2, A3B1, and A3B2. All samples were sectioned longitudinally after being immersed in India ink for three weeks. The microleakages were observed using a ste-reomicroscope. The SPSS 13.0 software package was used for factorial analysis. Results  The mean microleakage scores and standard deviations were as follows: Group A1B1: (1 192.59±417.84) μm, Group A1B2: (1 317.38±527.35) μm, Group A2B1: (1 429.33±482.68) μm, Group A2B2: (1 026.79±459.49) μm, Group A3B1: (1 448.29±561.02) μm, and Group A3B2: (1 922.47±678.86) μm. The A2B2 group showed minimum microleakage, whereas the A3B2 group showed maximum microleakage. The microleakage degrees among different irrigants presented significant statistical difference (P<0.05), but the two cements showed no significant difference (P>0.05). An interactive effect on the microleakage existed between the irrigants and the cements after cementing the metal post-cores (P<0.05). Conclusion  When cementing metal post-cores, the coronal microleakage following 3% H2O2+0.9% NaCl irrigation combined with glass ionomer cement can be reduced. The combined application of 15% EDTA+5.25% NaClO and glass ionomer cement significantly aggravates microleakage.

Key words: factorial analysis, microleakage, root canal irrigant, cement