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Lab talk, the good, the bad, and the ugly
Dental-CAD
Analog vs Digital
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<blockquote data-quote="CoolHandLuke" data-source="post: 293512" data-attributes="member: 4850"><p>if its tight on the model then something happened during pouring, or some deficiency was observed in the impression scan, like it missed a corner of a die (happens often)</p><p></p><p>this translates directly to the mill, if the mill was 100% accurate it will also miss the corner. this will create an emax that fits on the theoretical impression, but not the stone.</p><p></p><p>if the mill was not 100% accurate, but like most emax mills pretty poorly adaptive to internal contours, this too should be visible by metrological scan comparisons.</p><p></p><p>if however, the model and the impression scan line up perfectly, we can know for certain its a milling issue. if the scans do not line up perfectly, we know it was a scanning issue. if its a little of column A and a little of column B, well its a learning curve.</p></blockquote><p></p>
[QUOTE="CoolHandLuke, post: 293512, member: 4850"] if its tight on the model then something happened during pouring, or some deficiency was observed in the impression scan, like it missed a corner of a die (happens often) this translates directly to the mill, if the mill was 100% accurate it will also miss the corner. this will create an emax that fits on the theoretical impression, but not the stone. if the mill was not 100% accurate, but like most emax mills pretty poorly adaptive to internal contours, this too should be visible by metrological scan comparisons. if however, the model and the impression scan line up perfectly, we can know for certain its a milling issue. if the scans do not line up perfectly, we know it was a scanning issue. if its a little of column A and a little of column B, well its a learning curve. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAD
Analog vs Digital
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