目的:比较Fuji IX GP玻璃离子水门汀、3M ESPE Filtek^(TM) Bulk Fill Flowable树脂、VOCO Polofil Supra树脂及Beautiful Flow Plus F03树脂修复根面龋的临床疗效。方法:选取后牙根面龋患者128例(422颗患牙),按照充填修复材料分为A组(F...目的:比较Fuji IX GP玻璃离子水门汀、3M ESPE Filtek^(TM) Bulk Fill Flowable树脂、VOCO Polofil Supra树脂及Beautiful Flow Plus F03树脂修复根面龋的临床疗效。方法:选取后牙根面龋患者128例(422颗患牙),按照充填修复材料分为A组(Fuji IX GP玻璃离子水门汀修复)34例、B组(3M ESPE Filtek^(TM) Bulk Fill Flowable树脂修复)29例、C组(VOCO Polofil Supra树脂修复)35例、D组(Beautiful Flow Plus F03树脂修复)30例。手术治疗后随访6个月,比较4组患者牙髓活力、材料密合性、充填物表面磨损及充填物完好性情况。结果:术后6个月,4组患者牙髓活力均正常。A组、B组、C组、D组材料密合性好的患牙占比分别为75.49%、90.74%、88.57%、97.20%,A组低于B组、C组、D组,差异均有统计学意义(P<0.05);B组与D组、C组与D组比较,差异均有统计学意义(P<0.05),B、C组之间差异无统计学意义(P>0.05)。A组、B组、C组、D组充填物表面无磨损的患牙占比分别为77.45%、95.37%、94.29%、99.07%,A组占比低于B组、C组及D组,差异均有统计学意义(P<0.05);B组与C组、B组与D组、C组与D组间比较,差异均无统计学意义(P>0.05)。A组、B组、C组、D组充填物完好的患牙占比分别为91.18%、97.22%、97.14%、99.07%,A组占比低于D组,差异有统计学意义(P<0.05)。其他组之间比较,差异均无统计学意义(P>0.05)。结论:4种材料对牙髓活力均无影响,树脂类材料在密合性、表面磨损情况以及完好性上均优于Fuji IX GP玻璃离子水门汀。三种树脂类材料中Beautiful Flow Plus F03在密闭性方面优于其他两种树脂。展开更多
Consider the subshifts induced by constant-length primitive substitutions on two symbols. By investigating the equivalent version for the existence of Li-Yorke scrambled sets and by proving the non-existence of Schwei...Consider the subshifts induced by constant-length primitive substitutions on two symbols. By investigating the equivalent version for the existence of Li-Yorke scrambled sets and by proving the non-existence of Schweizer-Smítal scrambled sets, we completely reveal for this class of subshifts the chaotic behaviors possibly occurring in the sense of Li-Yorke and Schweizer-Smítal.展开更多
This paper provides a general method for constructing generalized p-value via the fiducial inference.Furthermore,the power properties of the generalized test are discussed.As illustrations, the two-parameter exponenti...This paper provides a general method for constructing generalized p-value via the fiducial inference.Furthermore,the power properties of the generalized test are discussed.As illustrations, the two-parameter exponential distribution and unbalanced two-fold nested design are researched.It is shown that the resulting generalized p-values are of good frequency property.展开更多
文摘目的:比较Fuji IX GP玻璃离子水门汀、3M ESPE Filtek^(TM) Bulk Fill Flowable树脂、VOCO Polofil Supra树脂及Beautiful Flow Plus F03树脂修复根面龋的临床疗效。方法:选取后牙根面龋患者128例(422颗患牙),按照充填修复材料分为A组(Fuji IX GP玻璃离子水门汀修复)34例、B组(3M ESPE Filtek^(TM) Bulk Fill Flowable树脂修复)29例、C组(VOCO Polofil Supra树脂修复)35例、D组(Beautiful Flow Plus F03树脂修复)30例。手术治疗后随访6个月,比较4组患者牙髓活力、材料密合性、充填物表面磨损及充填物完好性情况。结果:术后6个月,4组患者牙髓活力均正常。A组、B组、C组、D组材料密合性好的患牙占比分别为75.49%、90.74%、88.57%、97.20%,A组低于B组、C组、D组,差异均有统计学意义(P<0.05);B组与D组、C组与D组比较,差异均有统计学意义(P<0.05),B、C组之间差异无统计学意义(P>0.05)。A组、B组、C组、D组充填物表面无磨损的患牙占比分别为77.45%、95.37%、94.29%、99.07%,A组占比低于B组、C组及D组,差异均有统计学意义(P<0.05);B组与C组、B组与D组、C组与D组间比较,差异均无统计学意义(P>0.05)。A组、B组、C组、D组充填物完好的患牙占比分别为91.18%、97.22%、97.14%、99.07%,A组占比低于D组,差异有统计学意义(P<0.05)。其他组之间比较,差异均无统计学意义(P>0.05)。结论:4种材料对牙髓活力均无影响,树脂类材料在密合性、表面磨损情况以及完好性上均优于Fuji IX GP玻璃离子水门汀。三种树脂类材料中Beautiful Flow Plus F03在密闭性方面优于其他两种树脂。
基金the National Natural Science Foundation of China (Grant No. 10771084)the Education Department Foundation of Jilin Province (Grant No. 200568)the Foundations of Dalian Nationalities University and Jilin Normal University
文摘Consider the subshifts induced by constant-length primitive substitutions on two symbols. By investigating the equivalent version for the existence of Li-Yorke scrambled sets and by proving the non-existence of Schweizer-Smítal scrambled sets, we completely reveal for this class of subshifts the chaotic behaviors possibly occurring in the sense of Li-Yorke and Schweizer-Smítal.
基金This work was partly supported by the National Natural Science Foundation of China(Grant Nos.10271013,30600119 and 90403130)the Fund of Shandong University of Technology(Grant Nos.2006KJZ01,2005KJM18)
文摘This paper provides a general method for constructing generalized p-value via the fiducial inference.Furthermore,the power properties of the generalized test are discussed.As illustrations, the two-parameter exponential distribution and unbalanced two-fold nested design are researched.It is shown that the resulting generalized p-values are of good frequency property.
