Moldable dental composition
OwnerItzhak Shoher, Aharon E. Whitemaninventors
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Abstract
A moldable dental composition including high-fusing temperature metal particles and a binder comprising wax preferably in a concentration of above at least twenty percent (20%) of the composition. The high-fusing temperature metal particles should have an irregular nonspherical geometry and a thin cross-sectional average thickness. The moldable dental composition may also contain low fusing temperature metal particles for enhanced wetting of the high fusing metal particles during heat treatment at a heat treatment temperature which will substantially melt the low fusing metal particles. However it is not essential to the subject invention for the composition to contain low fusing metal particles.
Claims19
A moldable dental composition for forming a porous structure upon heat treatment having a void volume of at least 20%, said composition comprising high-fusing temperature metal particles and a binder comprising wax wherein said high-fusing particles have an irregular non-spherical geometry and a thin cross-sectional average thickness with at least 50% of the high fusing particles having an average thickness of less than 1.5 microns determined by measuring The surface area of the largest two dimensional planar image of each high fusing particle, computing the total surface area of all of the high fusing particles and dividing the cumulative surface area of the high fusing particles which are below 1.5 microns in average thickness by the computed total surface area.
A moldable dental composition comprising high-fusing temperature metal particles and a binder comprising wax characterized in that said high-fusing particles have an irregular non-spherical geometry and a thin cross-sectional average thickness wherein at least 30% of the high fusing metal particles are unidirectionally oriented in parallel alignment with its longest dimension.
Dependencies are inferred from the claim text.