牙齿null检测 | 数字图像相关DIC分析种植修复治疗过程中的载荷传递-北京欧兰科技发展有限公司

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应用领域	医疗/卫生
检测样本	牙齿
检测项目
参考标准	暂无

非介入式全场应变形变测量，可用于各种材料压缩和拉伸形变试验中，也可用于冶金，地质，矿产研究和工业领域。

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LaVision StrainMaster材料应变形变成像测量系统
型号：StrainMaster

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方案详情

This study compared splinted and non-splinted implant-supported prosthesis with and without a distal proximal contact using a digital image correlation method. Anepoxy resin model was made with
acrylic resin replicas of a mandibular first premolar and second molar and with threaded implants
replacing the second premolar and first molar. Splinted and non-splinted metal–ceramic screw-
retained crowns were fabricated and loaded with and without the presence of the second molar.A
single-camera measuring system was used to record the in-plane deformation on the model surface at a
frequency of 1.0 Hz under a load from 0 to 250N. The images were then analyzed with specialist
software to determine the direct (horizontal) and shear strains along the model.Not splinting the
crowns resulted in higher stress transfer to the supporting implants when the second molar replica was
absent. The presence of a second molar and an effective interproximal contact contributed to lower
stress transfer to the supporting structures even forn on-splinted restorations. Shear strains were
higher in the region between the molars when the second molar was absent, regardless of splinting.The
opposite was found for the region between the implants, which had higher shear strain values when
the second molar was present. When an effective distal contact is absent,non-splinted implant-
supported restorations introduce higher direct strains to the supporting structures underloading. Shear strains appear to be dependent also on the region within the model, with different regions showing
different trends in strain changes in the absence of an effective distal contact.

上一篇在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位

下一篇应用数字成像相关方法确定钛镍合金的摩擦特性

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北京欧兰科技发展有限公司

金牌会员丨第17年

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