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KMID : 0362120000220010005
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Journal of Technologic Dentistry
2000 Volume.22 No. 1 p.5 ~ p.12
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A Study on the Suitability of Cervical margin According to Die Materials Used in Crown Prosthesis
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Lee In-Kyu
Choi Un-Jae
Chung Hee-Sun
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Abstract
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The gaps between the die margin worked and the casting body were measured with an optical microscope and compared after making crown prosthetic materials using three kinds of die material - dental stone, extra hard stone, epoxy resin - used in crown prosthesis. The results are as follows : 1. All the gaps between the cast cervical margin and the casting bodies were relatively good regardless of die materials used with the gaps under , the allowable limit. 2. The cervical margin suitability of epoxy resin die was the highest among the three kinds of die material with the suitability value of . 3. Among the four surfaces(buccal, lingual, mesial, distal) of all the casting bodies, buccal surface was the highest in the cervical margin suitability with the value of .
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