Self-drilling screw bolts are a new product to replace ordinary screw bolts, and thus raise working efficiency ten times and reduce the cost of installation. According to the design theory of integrating drilling bit ...Self-drilling screw bolts are a new product to replace ordinary screw bolts, and thus raise working efficiency ten times and reduce the cost of installation. According to the design theory of integrating drilling bit with driving screw, the self-drilling screw bolt can complete successively the functions of drilling, screwing and fastening within several seconds, with the aid of a simple jig alone. This serves the development of board installations in room decoration and vehicle and ship building.展开更多
目的:研究腭侧微螺钉型种植体支抗在上颌前突治疗中的临床应用效果。方法选择上颌前突需强支抗矫治的患者22例,年龄18~25岁,分试验组和对照组,每组11例,试验组于上颌双侧腭侧应用微螺钉型种植体支抗,对照组用口外弓支抗,治疗前...目的:研究腭侧微螺钉型种植体支抗在上颌前突治疗中的临床应用效果。方法选择上颌前突需强支抗矫治的患者22例,年龄18~25岁,分试验组和对照组,每组11例,试验组于上颌双侧腭侧应用微螺钉型种植体支抗,对照组用口外弓支抗,治疗前后采用X线对头颅片进行测量,比较2组治疗前后软硬组织的变化差异。结果试验组:治疗后U1-NA(mm:3.08±177;1.18 vs 8.15±177;3.05)、U1-SN(101.90±176;±177;3.50±176; vs 117.90±176;±177;6.05±176;)较治疗前减小,U1-L1(123.98±176;±177;5.78±176; vs 103.89±176;±177;8.95±176;)较治疗前增大(P〈0.05)。对照组:治疗后U1-NA(mm:5.01±177;1.34 vs 9.12±177;2.13)、U1-SN(101.90±176;±177;3.97±176; vs 114.87±176;±177;7.69±176;)较治疗前减小,U1-L1(126.01±176;±177;3.12±176; vs 112.98±176;±177;5.98±176;)、U6-PtPNS(mm:21.45±177;2.43 vs 18.36±177;2.19)较治疗前增大(P〈0.05)。试验组U1-L1(19.48±176;±177;8.90±176; vs 13.01±176;±177;5.90±176;)数值改变量大于对照组,U6-PtPNS(mm:0.90±177;0.29 vs 3.78±177;0.12)数值改变量小于对照组(P〈0.05)。结论治疗上颌前突患者,上颌需要强支抗时,可应用腭侧微螺钉型种植体支抗。展开更多
文摘Self-drilling screw bolts are a new product to replace ordinary screw bolts, and thus raise working efficiency ten times and reduce the cost of installation. According to the design theory of integrating drilling bit with driving screw, the self-drilling screw bolt can complete successively the functions of drilling, screwing and fastening within several seconds, with the aid of a simple jig alone. This serves the development of board installations in room decoration and vehicle and ship building.
文摘目的:研究腭侧微螺钉型种植体支抗在上颌前突治疗中的临床应用效果。方法选择上颌前突需强支抗矫治的患者22例,年龄18~25岁,分试验组和对照组,每组11例,试验组于上颌双侧腭侧应用微螺钉型种植体支抗,对照组用口外弓支抗,治疗前后采用X线对头颅片进行测量,比较2组治疗前后软硬组织的变化差异。结果试验组:治疗后U1-NA(mm:3.08±177;1.18 vs 8.15±177;3.05)、U1-SN(101.90±176;±177;3.50±176; vs 117.90±176;±177;6.05±176;)较治疗前减小,U1-L1(123.98±176;±177;5.78±176; vs 103.89±176;±177;8.95±176;)较治疗前增大(P〈0.05)。对照组:治疗后U1-NA(mm:5.01±177;1.34 vs 9.12±177;2.13)、U1-SN(101.90±176;±177;3.97±176; vs 114.87±176;±177;7.69±176;)较治疗前减小,U1-L1(126.01±176;±177;3.12±176; vs 112.98±176;±177;5.98±176;)、U6-PtPNS(mm:21.45±177;2.43 vs 18.36±177;2.19)较治疗前增大(P〈0.05)。试验组U1-L1(19.48±176;±177;8.90±176; vs 13.01±176;±177;5.90±176;)数值改变量大于对照组,U6-PtPNS(mm:0.90±177;0.29 vs 3.78±177;0.12)数值改变量小于对照组(P〈0.05)。结论治疗上颌前突患者,上颌需要强支抗时,可应用腭侧微螺钉型种植体支抗。