【摘要】 对自制的光学咬合片进行了标定及光学蠕变实验,并作了误差分析。结果发现,载荷双折射条纹级数与应变量呈一一对应关系;光学咬合片记录的应变范围是2.5%～60%,量程比文献报道的大;卸载后经过一定的时效,条纹级数减少小于5%,测量数据稳定。更多还原

【Abstract】 The purpose of this article is to make some basic research on the photccelusionsheet produced by the authors.The experiments include the calibration of the sheet,analysing the relation of birefringence to the time when the birefringence was meas-ured and analysing possible error.The results show:1.There are corresponding relations between the load and the birefringence andbetween the birefringence and the strain.2.The strain intensity level recorded by the sheet range from 2.5% to 60%.Thecapacity is large than that was reported in the literature.3.After unloading,decrease of the birefringence is less than 5% in a long time.The results demonstrate that the photocclusion sheet possesses good properties andcan be used in clinical research.更多还原