Preparation and Physical Properties of Inlay Wax for Complex Castings
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- KATAKURA Naoyuki
- Department of Dental Materials Science, Tohoku University School of Dentistry
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- ARAKI Yoshima
- Department of Dental Materials Science, Higashi-Nippon-Gakuen University School of Dentistry
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- KAWAKAMI Michio
- Department of Dental Materials Science, Tohoku University School of Dentistry
Bibliographic Information
- Other Title
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- 複雑な鋳造体用インレーワックスの試作とその物理的性質
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Abstract
Inlay waxes were prepared for the use in complex castings, which have both the male portion of the pattern and the male portion of the die.The male portion of the wax pattern requires sufficient shrinkage to allow the layer of cement between the castings and the cavity.On the other hand, the shrinkage of the wax pattern at the male portion of the die is restricted by stress relaxation of the wax.The main component was paraffin with a high melting point and the others were carnauba wax, dammar and beeswax.Physical properties such as thermal expansion, flow and stress relaxation of these prepared waxes were investigated.The inlay wax having large shrinkage at the male portion of the pattern could be formulated using paraffin with a high melting point but without isoparaffin.In this case, it was necessary to add small amounts of paraffin with a low melting point in order to reduce the operational difficulty.Small amounts of carnauba wax, which restrict stress relaxation and suitable amounts of other ingredients, should be added to minimize the shrinkage of the wax pattern at the male portion of the die.
Journal
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- The Journal of the Japanese Society for Dental Materials and Devices
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The Journal of the Japanese Society for Dental Materials and Devices 5 (2), 246-251, 1986
The Japanese Society for Dental Materials and Devices
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Details
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- CRID
- 1390282679187345792
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- NII Article ID
- 110002987923
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- ISSN
- 21884188
- 02865858
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed