【摘要】：目的通過葡萄糖滲漏法和micro-CT三維掃描評價iRoot SP根管三維充填的封閉能力。方法單根管下頜前磨牙55顆截去牙冠保留牙根12 mm,機用鎳鈦預(yù)備根管至30#,按隨機數(shù)字表法將標(biāo)本分為3個實驗組(A組:iRoot SP直接注入根管充填;B組:iRoot SP+熱牙膠充填;C組:AH Plus+熱牙膠充填。n=15)和2個對照組[陰性對照組(D組)、陽性對照組(E組),n=5]。建立微滲漏葡萄糖定量分析模型,分別于第1天,第1、2、3、4、5、6周用葡萄糖氧化酶法檢測從牙冠向牙根滲出的葡萄糖濃度。同時micro-CT三維掃描分析充填根管內(nèi)存在的間隙。結(jié)果在前4周,3個實驗組平均每天微滲漏量0.18 mmol/L,幾乎沒有微滲漏;第5、6周時,C組平均微滲漏值0.18 mmol/L,有微滲漏發(fā)生,且C組與A、B組之間微滲漏量差異有統(tǒng)計學(xué)意義(P0.05)。micro-CT三維掃描發(fā)現(xiàn):A組根管中上段無間隙,根尖1 mm見有間隙形成。B、C組根管內(nèi)有間隙形成。結(jié)論 iRoot SP用于根管三維充填,具有良好的封閉性,而且一元相充填操作簡單,對牙周組織沒有損傷,對形成根管三維充填有一定的優(yōu)勢。
[Abstract]:Objective to evaluate the sealing ability of iRoot SP root canal filling by glucose leakage and micro-CT 3D scanning. Methods 55 mandibular premolars with a single root canal were cut off to preserve the root 12 mm, and the root canal was prepared to #30 with nickel titanium. The specimens were randomly divided into 3 experimental groups (group A: 1% iRoot SP was injected directly into the root canal to fill the root canal, group B, group B) was injected directly into the root canal to fill the root canal, and the root canal was prepared with nickel titanium to prepare the root canal to #30. Group C: AH Plus hot gum filling. 15) and 2 control groups [negative control group (D group), positive control group (E group). A quantitative analysis model of microleakage glucose was established. Glucose concentration from crown to root was detected by glucose oxidase method on the first day and at the 1st day and 2nd week. At the same time, micro-CT 3D scanning was used to analyze the gap in root canal. Results in the first four weeks, the average daily microleakage was 0.18 mmol / L in the three experimental groups, and almost no microleakage was found in the three experimental groups, and the average microleakage value in group C was 0.18 mmol / L at the 5th week. There was significant difference in the amount of microleakage between group C and group A (P0.05) .Micro-CT 3D scanning showed that there was no space in the middle and upper part of root canal in group A, and there was gap formation in the root canal in group B (1 mm). Conclusion iRoot SP can be used in the three-dimensional root canal filling with good closure, and the monomorphic filling is simple, no damage to periodontal tissue, and it has some advantages in the formation of three-dimensional root canal filling.
【作者單位】： 重慶醫(yī)科大學(xué)附屬口腔醫(yī)院兒童牙病科;重慶醫(yī)科大學(xué)附屬口腔醫(yī)院口腔疾病與生物醫(yī)學(xué)重慶市重點實驗室;重慶醫(yī)科大學(xué)附屬口腔醫(yī)院牙體牙髓科;
【分類號】：R781.05

【參考文獻】

相關(guān)期刊論文 前2條

1 楊軍英;王小燕;張盛炎;陳珊;林愛華;;改良葡萄糖微滲漏檢測法評價3種根管封閉劑的封閉能力[J];中國組織工程研究與臨床康復(fù);2010年34期

2 徐瓊,樊明文,范兵,凌均h，

本文編號：2140802