不同材料充填根管后即刻与延迟桩道预备对根尖封闭性能的影响

发布时间：2019-05-16 09:34

【摘要】：背景:根尖封闭性是确保根管治疗远期疗效的关键,由于桩道预备对根管封闭性能带来的影响不可避免,因此如何能将这一影响降至最低成为学者们热议的话题。目的:探讨使用不同根管充填材料后,即刻桩道预备和延迟桩道预备对根尖封闭性能的影响。方法:获取48颗人单根管前磨牙,截冠后随机分为3组,每组16颗牙齿:A组于根管充填后进行即刻桩道预备,B组于根管充填后进行延迟桩道预备,C组根管充填后不进行桩道预备,3组内再随机各分为2个亚组,采用不同的根管充填材料,即AH-plus糊剂+牙胶尖组(分别记为A1组、B1组、C1组)与矿物三氧化物凝聚体糊剂+牙胶尖组(分别记为A2组、B2组、C2组)。通过加压染料渗透法测量根管根方微渗漏的长度。结果与结论:A1组与B1组,A2组与B2组,C1组与C2组根方微渗漏值比较差异无显著性意义(P0.05);A1组根方微渗漏值大于A2组(P0.05),B1组根方微渗漏值大于B2组(P0.05);结果表明,以矿物三氧化物凝聚体糊剂对离体牙进行根管充填后,无论行即刻桩道预备还是延迟桩道预备,根管根方微渗漏均较小,较AH-plus体现出更好的根尖封闭性。
[Abstract]:Background: apical sealing is the key to ensure the long-term effect of root canal therapy. Because the influence of post preparation on root canal sealing performance is inevitable, how to minimize this influence has become a hot topic for scholars. Objective: to investigate the effect of immediate post preparation and delayed pile preparation on apical sealing after different root canal filling materials were used. Methods: 48 premolars of single root canal were obtained and randomly divided into 3 groups with 16 teeth in each group: group A received immediate post preparation after root canal filling, group B received delayed post preparation after root canal filling. Group C did not carry out post preparation after root canal filling. The three groups were randomly divided into two subgroups. Different root canal filling materials, namely AH-plus paste gum cusp group (A1 group, B1 group, respectively), were used. Group C 1) and mineral trioxide paste gum tip group (group A 2, group B2, group C 2, respectively). The length of root canal root microleakage was measured by pressurized dye penetration method. Results and conclusion: there was no significant difference in microleakage between A1 group and B1 group, A2 group and B2 group, C1 group and C2 group (P 0.05). The microleakage value of root prescription in A1 group was higher than that in A2 group (P 0.05), and that in B1 group was higher than that in B2 group (P 0.05). The results showed that the root canal microleakage was smaller than that of AH-plus after root canal filling with mineral trioxide paste, whether immediate post preparation or delayed post preparation.
【作者单位】：四川西南医科大学附属口腔医院口腔修复科及口颌面修复重建和再生实验室;
【分类号】：R781.05

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