CAJ | 학술논문

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SPSS13.0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（1192.59±417.84）、（1317.38±527.35）、（1429.33±482.68）、（1026.79±459.49）、（1448.29±561.02）、（1922.47±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。
목적：탐토근관충세액화점결제대금속장핵점고후근관관방미삼루적영향，이급이자대우근관관방미삼루적교호작용。방법채용량인소석인설계방법，장90과완성근관충전적리체하합전마아진행장도예비，경상규제작고락장핵후，분위6조，매조15과。근관충세액（인소A）선취3충：A1위무충세액（75%을순면구청길），A2위3%H2O2+0.9%NaCl용액，A3위15%을이알사을산（EDTA）+5.25%NaClO용액；점결제（인소B）선취2충：B1위취최산자수문정，B2위파리리자수문정。안조A1B1、A1B2、A2B1、A2B2、A3B1、A3B2분별대6조진행처리，장핵점고완성후적소유양본침포우인도묵수중3주，연후연협설향중선위치종행벽개，재체시현미경하박조병측량염료삼입근관적최대장도，이차평개미삼루적대소。채용SPSS13.0연건대결과진행석인분석。결과 A1B1、A1B2、A2B1、A2B2、A3B1、A3B2조염료삼입장도분별위（1192.59±417.84）、（1317.38±527.35）、（1429.33±482.68）、（1026.79±459.49）、（1448.29±561.02）、（1922.47±678.86）μm，A2B2조미삼루정도최경，A3B2조최중；불동충세액지간미삼루적차이유통계학의의（P<0.05），불동점결제지간적차이몰유통계학의의（P>0.05），단근관충세액화점결제대우미삼루적발생유교호작용（P<0.05）。결론점고금속장핵시，3%H2O2+0.9%NaCl용액충세근관연합파리리자수문정점결제재감소미삼루적발생방면유일정우세；15%EDTA화5.25%NaClO연합파리리자수문정회가중근관미삼루적발생。
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 stereomicroscope. 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.