本文選題：牙根尖 + 根管充填　； 參考：《重慶醫(yī)學(xué)》2017年22期

【摘要】：目的通過(guò)體外試驗(yàn)檢測(cè)iRoot作為根尖倒充填材料的封閉性,并與礦物三氧化聚合體(MTA)進(jìn)行比較,旨在為臨床應(yīng)用iRoot提供參考依據(jù)。方法將67顆單根管前牙截去牙冠,進(jìn)行常規(guī)根管預(yù)備及充填,切除根尖3mm,行根尖倒預(yù)備。將樣本中63顆牙分為4個(gè)試驗(yàn)組,分別用不同材料進(jìn)行根尖倒充填:A組(iRoot BP)、B組(iRoot BP plus)、C組(MTA)各為17顆牙,D組(iRoot BP+牙膠尖)12顆牙,剩余4顆牙作為對(duì)照組。4個(gè)試驗(yàn)組中每組選取10顆牙用流體動(dòng)力學(xué)檢測(cè)微滲漏,觀察1、7、14、28d4個(gè)時(shí)間點(diǎn)的微滲漏情況,另外各組選取2顆牙用SEM觀察充填材料超微結(jié)構(gòu)。A、B、C 3組各余下5顆牙用Micro CT掃描,檢測(cè)充填材料的孔隙率。結(jié)果 SEM觀察發(fā)現(xiàn),A、B、D組各樣本中充填材料與牙本質(zhì)界面間未見明顯的邊緣間隙,而C組各樣本中可見較為明顯的間隙。Micro CT掃描結(jié)果發(fā)現(xiàn),A、B、C 3組間的孔隙率分別為0.020±0.023、0.045±0.035、0.031±0.011,組間兩兩比較差異無(wú)統(tǒng)計(jì)學(xué)意義(P0.05)。流體動(dòng)力學(xué)試驗(yàn)表明,4組間的微滲漏測(cè)定值比較,差異無(wú)統(tǒng)計(jì)學(xué)意義(P0.05)。結(jié)論 iRoot和MTA兩種材料用于根尖倒充填的封閉效果無(wú)明顯差異,但iRoot操作性優(yōu)于MTA。
[Abstract]:Objective to investigate the sealing property of iRoot as a root tip filling material in vitro and to compare it with mineral trioxide polymer (MTAA) in order to provide reference for clinical application of iRoot. Methods 67 single canals anterior teeth were cut off, then the canals were prepared and filled with conventional root canal, and the apical apices were removed 3 mm, and the apical inversion was performed. 63 teeth were divided into 4 experimental groups, and 12 teeth of iRoot root in group C (17 teeth in group D) were filled with different materials for iRoot root in group B (MTAA), each group was divided into two groups: group A (n = 12), and group B (n = 10) were divided into two groups: group C (n = 12), and group C (n = 17) were divided into two groups: group C (n = 12). The remaining 4 teeth were used as the control group. 10 teeth in each of the four experimental groups were selected for hydrodynamic detection of microleakage. In addition, 2 teeth of each group were selected to observe the ultrastructure of filling material by SEM. The remaining 5 teeth of group C 3 were scanned with Micro CT to detect the porosity of filling material. Results SEM observation showed that there was no obvious marginal gap between the filling material and dentin interface. The results of CT scanning showed that the porosity of group C was 0.020 鹵0.023, 0.045 鹵0.035 and 0.031 鹵0.011, respectively. There was no significant difference between the two groups (P 0.05). The results of hydrodynamic test showed that there was no significant difference in microleakage between the four groups (P 0.05). Conclusion there is no significant difference in sealing effect between iRoot and MTA, but iRoot is superior to MTA.
【作者單位】： 重慶醫(yī)科大學(xué)附屬兒童醫(yī)院口腔科;重慶醫(yī)科大學(xué)附屬口腔醫(yī)院牙體牙髓科;四川大學(xué)華西口腔醫(yī)院牙體牙髓科;
【分類號(hào)】：R781.05

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本文編號(hào)：1838981