To improve the machinability of optical glass and achieve optical parts with satisfied surface quality and dimensional accuracy, scratching experiments with increasing cutting depth were conducted on glass SF6 to eval...To improve the machinability of optical glass and achieve optical parts with satisfied surface quality and dimensional accuracy, scratching experiments with increasing cutting depth were conducted on glass SF6 to evaluate the influence of cutting fluid properties on the machinability of glass. The sodium carbonate solution of 10.5% concentration was chosen as cutting fluid. Then the critical depths in scratching experiments with and without cutting fluid were examined. Based on this, turning experiments were carried out, and the surface quality of SF6 was assessed. Compared with the process of dry cutting, the main indexes of surface roughness decrease by over 70% totally. Experimental results indicated that the machinability of glass SF6 can be improved by using the sodium carbonate solution as cutting fluid.展开更多
目的:探讨树脂水门汀与玻璃离子粘结剂在牙体缺损修复中的临床疗效及对龈沟液TNF-α,IL-6,CRP炎症因子水平的影响。方法:选取2022年4月至2023年5月在解放军总医院京北医疗区、武汉市第九医院等多中心口腔科就诊的98例牙体缺损患者,建立...目的:探讨树脂水门汀与玻璃离子粘结剂在牙体缺损修复中的临床疗效及对龈沟液TNF-α,IL-6,CRP炎症因子水平的影响。方法:选取2022年4月至2023年5月在解放军总医院京北医疗区、武汉市第九医院等多中心口腔科就诊的98例牙体缺损患者,建立编号系统,使用随机数表生成序列,将患者分为树脂水门汀组(A组)和玻璃离子粘结剂组(B组),各49例。两组患者均采用相应的材料进行牙体缺损修复,观察并记录修复后的牙龈出血率、牙龈炎、牙龈变色、出血指数(BI)、探诊深度(PD)、牙菌斑指数(PLI)、牙齿美观度评分[红色美学指数(PES)]等指标,以及龈沟液TNF-α,IL-6,CRP炎症因子水平。结果:修复后,A组的牙龈出血率(修复后3个月:14.3%vs 32.7%,χ^(2)=4.602,P=0.032;修复后6个月:12.2%vs 28.6%,χ^(2)=4.021,P=0.045;修复后12个月:4.1%vs 16.3%,χ^(2)=4.009,P=0.045)、牙龈炎发生率(修复后12个月:12.2%vs 28.6%,χ^(2)=4.167,P=0.041)、牙龈变色程度(修复后3个月:无89.8%、轻10.2%vs无79.6%、轻16.3%和中4.1%,χ^(2)=4.118,P=0.039;修复后6个月:无83.7%、轻14.3%和中2.0%vs无65.3%、轻24.5%、中8.2%和重2.0%,χ^(2)=7.835,P=0.005;修复后12个月:无77.6%、轻18.4%、中4.1%vs无51.0%、轻30.6%、中12.2%、重4.1%、极重2.0%,χ^(2)=12.467,P<0.001)、BI(修复后3个月:19.7±6.7 vs 26.3±8.1,t=4.012,P<0.001;修复后6个月:13.6±5.4 vs 21.1±7.2,t=5.421,P<0.001;修复后12个月:10.2±4.3 vs 17.3±6.1,t=6.011,P<0.001)、PD(修复后3个月:2.4±0.6 vs 2.9±0.7,t=3.621,P<0.001;修复后6个月:2.1±0.5 vs 2.6±0.6,t=4.231,P<0.001;修复后12个月:1.9±0.4 vs 2.4±0.5,t=5.142,P<0.001)、PLI(修复后3个月:21.6±7.2 vs 28.4±8.6,t=3.921,P<0.001;修复后6个月:15.4±6.1 vs 23.2±7.9,t=5.011,P<0.001;修复后12个月:12.1±5.2 vs 23.2±7.9,t=5.821,P<0.001)等指标均低于B组;A组的PES评分高于B组(修复后3个月:6.5±1.4 vs 5.7±1.5,t=2.521,P=0.014;修复后6个月:8.2±1.6 vs 7.1±1.7,t=3.011,P<0.001;修复后12个月:9.4±1.8 vs 8.2±1.9,t=3.421,P<0.001);A组的龈沟液TNF-α(修复后3个月:5.32±1.45 vs 8.69±2.28,t=8.731,P<0.001;修复后6个月:4.76±1.23 vs 8.12±2.09,t=9.699,P<0.001;修复后12个月:4.51±1.11 vs 7.85±1.98,t=10.300,P<0.001),IL-6(修复后3个月:3.45±0.89 vs 5.79±1.39,t=9.924,P<0.001;修复后6个月:3.12±0.76 vs 5.23±1.24,t=10.156,P<0.001;修复后12个月:2.98±0.71 vs 4.98±1.15,t=10.359,P<0.001),CRP(修复后3个月:2.01±0.52 vs 3.27±0.79,t=9.326,P<0.001;修复后6个月:1.85±0.47 vs 3.01±0.74,t=9.263,P<0.001;修复后12个月:1.78±0.44 vs 2.89±0.71,t=9.302,P<0.001)水平均低于B组。结论:树脂水门汀在牙体缺损修复中具有较好的美学疗效,能够有效改善患者的口腔健康和生活质量,同时能够降低龈沟液中的炎症因子水平,减少牙周炎的发生风险。展开更多
基金Supported by National Natural Science Foundation of China (No. 50775057)
文摘To improve the machinability of optical glass and achieve optical parts with satisfied surface quality and dimensional accuracy, scratching experiments with increasing cutting depth were conducted on glass SF6 to evaluate the influence of cutting fluid properties on the machinability of glass. The sodium carbonate solution of 10.5% concentration was chosen as cutting fluid. Then the critical depths in scratching experiments with and without cutting fluid were examined. Based on this, turning experiments were carried out, and the surface quality of SF6 was assessed. Compared with the process of dry cutting, the main indexes of surface roughness decrease by over 70% totally. Experimental results indicated that the machinability of glass SF6 can be improved by using the sodium carbonate solution as cutting fluid.
文摘目的:探讨树脂水门汀与玻璃离子粘结剂在牙体缺损修复中的临床疗效及对龈沟液TNF-α,IL-6,CRP炎症因子水平的影响。方法:选取2022年4月至2023年5月在解放军总医院京北医疗区、武汉市第九医院等多中心口腔科就诊的98例牙体缺损患者,建立编号系统,使用随机数表生成序列,将患者分为树脂水门汀组(A组)和玻璃离子粘结剂组(B组),各49例。两组患者均采用相应的材料进行牙体缺损修复,观察并记录修复后的牙龈出血率、牙龈炎、牙龈变色、出血指数(BI)、探诊深度(PD)、牙菌斑指数(PLI)、牙齿美观度评分[红色美学指数(PES)]等指标,以及龈沟液TNF-α,IL-6,CRP炎症因子水平。结果:修复后,A组的牙龈出血率(修复后3个月:14.3%vs 32.7%,χ^(2)=4.602,P=0.032;修复后6个月:12.2%vs 28.6%,χ^(2)=4.021,P=0.045;修复后12个月:4.1%vs 16.3%,χ^(2)=4.009,P=0.045)、牙龈炎发生率(修复后12个月:12.2%vs 28.6%,χ^(2)=4.167,P=0.041)、牙龈变色程度(修复后3个月:无89.8%、轻10.2%vs无79.6%、轻16.3%和中4.1%,χ^(2)=4.118,P=0.039;修复后6个月:无83.7%、轻14.3%和中2.0%vs无65.3%、轻24.5%、中8.2%和重2.0%,χ^(2)=7.835,P=0.005;修复后12个月:无77.6%、轻18.4%、中4.1%vs无51.0%、轻30.6%、中12.2%、重4.1%、极重2.0%,χ^(2)=12.467,P<0.001)、BI(修复后3个月:19.7±6.7 vs 26.3±8.1,t=4.012,P<0.001;修复后6个月:13.6±5.4 vs 21.1±7.2,t=5.421,P<0.001;修复后12个月:10.2±4.3 vs 17.3±6.1,t=6.011,P<0.001)、PD(修复后3个月:2.4±0.6 vs 2.9±0.7,t=3.621,P<0.001;修复后6个月:2.1±0.5 vs 2.6±0.6,t=4.231,P<0.001;修复后12个月:1.9±0.4 vs 2.4±0.5,t=5.142,P<0.001)、PLI(修复后3个月:21.6±7.2 vs 28.4±8.6,t=3.921,P<0.001;修复后6个月:15.4±6.1 vs 23.2±7.9,t=5.011,P<0.001;修复后12个月:12.1±5.2 vs 23.2±7.9,t=5.821,P<0.001)等指标均低于B组;A组的PES评分高于B组(修复后3个月:6.5±1.4 vs 5.7±1.5,t=2.521,P=0.014;修复后6个月:8.2±1.6 vs 7.1±1.7,t=3.011,P<0.001;修复后12个月:9.4±1.8 vs 8.2±1.9,t=3.421,P<0.001);A组的龈沟液TNF-α(修复后3个月:5.32±1.45 vs 8.69±2.28,t=8.731,P<0.001;修复后6个月:4.76±1.23 vs 8.12±2.09,t=9.699,P<0.001;修复后12个月:4.51±1.11 vs 7.85±1.98,t=10.300,P<0.001),IL-6(修复后3个月:3.45±0.89 vs 5.79±1.39,t=9.924,P<0.001;修复后6个月:3.12±0.76 vs 5.23±1.24,t=10.156,P<0.001;修复后12个月:2.98±0.71 vs 4.98±1.15,t=10.359,P<0.001),CRP(修复后3个月:2.01±0.52 vs 3.27±0.79,t=9.326,P<0.001;修复后6个月:1.85±0.47 vs 3.01±0.74,t=9.263,P<0.001;修复后12个月:1.78±0.44 vs 2.89±0.71,t=9.302,P<0.001)水平均低于B组。结论:树脂水门汀在牙体缺损修复中具有较好的美学疗效,能够有效改善患者的口腔健康和生活质量,同时能够降低龈沟液中的炎症因子水平,减少牙周炎的发生风险。
