本文選題：根管治療 + 抗折力��； 參考：《實用口腔醫(yī)學(xué)雜志》2017年06期

【摘要】：目的:比較單支銼往復(fù)運動器械Reciproc、WaveOne與全序列旋轉(zhuǎn)運動器械ProTaper和BLX根管預(yù)備后牙根抗折性的差異。方法:收集上、下頜離體前牙各50顆,分別隨機分成5組(n=10)。分別用上述4種根管預(yù)備器械對4組牙進行根管預(yù)備,1組對照牙不進行根管預(yù)備。預(yù)備后將標(biāo)本置于電子萬能實驗機上加壓直至根折,記錄折斷瞬間所受的壓力值(N)并進行統(tǒng)計學(xué)分析。結(jié)果:根管預(yù)備后實驗組牙根的抗折力均低于對照組(P0.05);Reciproc組與WaveOne組、ProTaper組與BLX組預(yù)備后牙根抗折力無統(tǒng)計學(xué)差異(P0.05);Reciproc組和WaveOne組牙根抗折力高于ProTaper組和BLX組(P0.05);當(dāng)應(yīng)用同種器械預(yù)備至同等號數(shù)時,上頜牙根的抗折力高于下頜牙根(P0.05)。結(jié)論:往復(fù)運動預(yù)備系統(tǒng)器械根管預(yù)備后牙根的抗折性優(yōu)于全序列旋轉(zhuǎn)預(yù)備系統(tǒng)器械,上頜切牙預(yù)備后牙根的抗折性均高于下頜切牙。
[Abstract]:Objective: to compare the difference of root fracture resistance between single file reciprocating motion instrument Reciprocc wave one and full sequence rotary motion instrument ProTaper and BLX. Methods: 50 mandibular anterior teeth were randomly divided into 5 groups. Four kinds of root canal preparation instruments were used for root canal preparation in 4 groups. After preparation, the specimens were placed on an electronic universal experimental machine until the root fold, and the pressure at the moment of fracture was recorded and analyzed statistically. Results: after root canal preparation, the root fracture resistance of the experimental group was lower than that of the control group P0.05Reciproc group, WaveOne group and BLX group. There was no significant difference in the root fracture resistance of the experimental group. The root fracture resistance of the WaveOne group and the WaveOne group was higher than that of the ProTaper group and BLX group, and when the allogeneic group was used, the root fracture resistance of the control group was higher than that of the ProTaper group and the BLX group. When the apparatus is ready for the same number, The fracture resistance of maxillary root was higher than that of mandibular root. Conclusion: the fracture resistance of the root after root canal preparation is better than that of the whole series rotation system. The anti-fracture of the maxillary incisor is higher than that of the mandibular incisor.
【作者單位】： 天津醫(yī)科大學(xué)口腔醫(yī)院牙體牙髓科;天津醫(yī)科大學(xué)總醫(yī)院口腔科;天津市南開醫(yī)院口腔科;
【分類號】：R781.05

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