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KMID : 0362420180560010017
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Journal of Korean Academy of Prosthodontics
2018 Volume.56 No. 1 p.17 ~ p.24
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Comparison of internal adaptation of removable partial denture metal frameworks made by lost wax technique and printing technique of pattern using CAD
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Choi Won-Jun
Woo Yi-Hyung
Kim Hyeong-Seob
Paek Jang-Hyun
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Abstract
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Lost wax technique of casting wax patterns has been used principally to make metal frameworks of removable partial dentures. Since the development of digital technology and CAD, metal frameworks can be built through digital surveying and framework designing. Many cases proved that resin patterns made by CAD printing method were well adapted to internal oral structure and final metal frameworks also showed good internal adaptation as well. The metal frameworks of a removable partial denture were made by both lost wax technique and CAD technique and were applied to a patient with severe alveolar bone loss. Using CAD data and fit checker, internal adaptation of both metal frameworks were evaluated by comparing the gap between surveyed crown and its structure. This study is to prove that metal frameworks by both techniques showed adaptation that can be applied in clinical field.
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KEYWORD
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Removable partial denture, Metal framework, Lost wax technique, Computer aided design
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