画像解析装置を用いた印象材の内部気泡測定に関する研究 : 第1報画像解析装置の測定条件の検討

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Internal voids in impression material are troublesome in clinical practice because they influence reproducibility of details and physical property of impression material. However, distribution and area of fine internal voids have been rarely measured quantitatively in many studies concerning them.Therefore, we attempted to measure internal voids by digital image analyzer which has been used for quantitative analysis in dental studies recently. Measurement accuracy of device, treatment method to clear the margin of internal voids and influence of rotating original image onvideo input were investigated. On calibration and video input, enlargement of original image with a zoom up lens was effective in improvement of measurement accuracy. Deviation of the examined value depended onposition of CRT monitor was less than 1 %. Catalyst of Bite-checker (GC Dental Industrial Corp.), used as a treatment material of internal voids, made the margin of internal voids the most clearc ompared to four other. It was necesary to adapt the mean of six measurements by rotating the original image 60 degrees each in order to make negligible the variation of directional dependence of video input. From the above results, by direct input of specimen information into the digital image analyzer, measurement became fast and simple, and reproducibility and objectivity of the examinedvalue were excellent in comparison with other measuring methods.
社団法人日本補綴歯科学会の論文
1988-02-01

画像解析装置を用いた印象材の内部気泡測定に関する研究 : 第1報画像解析装置の測定条件の検討

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画像解析装置を用いた印象材の内部気泡測定に関する研究 : 第1報 画像解析装置の測定条件の検討

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画像解析装置を用いた印象材の内部気泡測定に関する研究 : 第1報画像解析装置の測定条件の検討