摘要
背景:修复体与牙体组织及黏结剂间的微渗漏可以引起口腔中的细菌和液体进入此缝隙中,破坏修复体与牙体组织的黏结界面,导致修复体黏结的失败。通过微渗漏检测可以直接显示出桩核修复系统根管封闭性的好与坏,微渗漏的轻重情况直接影响到桩核修复后的效果。目的:评价采用不同方式冲洗根管壁内表面对纤维桩与根管牙本质间微渗漏的影响。方法:将30颗新鲜无龋单根管离体人前磨牙桩道预备后随机分为5组,分别采用生理盐水、5.25%次氯酸钠+17%EDTA溶液+生理盐水、体积分数3%过氧化氢溶液+5.25%次氯酸钠+生理盐水、体积分数3%过氧化氢溶液+2%氯已定溶液+生理盐水、2%氯已定溶液+17%EDTA溶液+生理盐水冲洗根管内壁。采用Super-bond C&B黏结剂黏结纤维桩,体视显微镜下观察试件各剖面的微渗漏情况。结果与结论:生理盐水组微渗漏最严重,2%氯已定溶液+17%EDTA溶液+生理盐水组微渗漏最轻,体积分数3%过氧化氢溶液+5.25%次氯酸钠+生理盐水组渗漏情况仅次于生理盐水组,5.25%次氯酸钠+17%EDTA溶液+生理盐水组与体积分数3%过氧化氢溶液+2%氯已定溶液+生理盐水组渗漏情况介于体积分数3%过氧化氢溶液+5.25%次氯酸钠+生理盐水组与2%氯已定溶液+17%EDTA溶液+生理盐水组之间。
BACKGROUND：Microleakage between restoration, tooth structure and bonding agent can cause the entry of bacteria and liquid in the mouth into the gap, thereby damaging the bonding interface between the restoration and tooth tissues, and leading to bond failure. Microleakage detection can directly show whether the closure of the root canal of post and core system is good or bad. The severity of microleakage directly affects the restorative effects of post and core. OBJECTIVE： To evaluate the effects of different root canal cleaning methods on the microleakage between the fiber post and root canal dentin. METHODS： Thirty fresh non-caries premolar posts with free root canalin vitro were randomly divided into five groups, and the root canal wal was respectively washed with saline, 5.25% sodium hypochlorite solution＋17% ethylenediamine tetra-acetic acid （EDTA）＋saline, 3% hydrogen peroxide solution＋5.25% sodium hypochlorite＋ saline, 3% hydrogen peroxide solution＋2% chlorhexidine solution＋saline, and 2% chlorhexidine solution＋17% EDTA＋saline in different groups. Super-bond C＆B adhesive agent was used for bonding fiber post, and the microleakage of each sample was observed under stereomicroscope. RESULTS AND CONCLUSION： The severity of microleakage in the al groups was ranged as folows： saline＆nbsp;group 〉 3% hydrogen peroxide solution＋5.25% sodium hypochlorite＋saline group 〉 5.25% sodium hypochlorite solution＋17% EDTA＋saline and 3% hydrogen peroxide solution＋2% chlorhexidine solution＋saline groups 〉 2% chlorhexidine solution＋17% EDTA＋saline group.
出处
《中国组织工程研究》
CAS
CSCD
2014年第47期7697-7701,共5页
Chinese Journal of Tissue Engineering Research
