Dental prosthesis veneering porcelain molding process

Abstract

The invention discloses a dental prosthesis veneering porcelain molding process, and relates to the technical field of dental prosthesis processing. The process comprises the following steps: according to case conditions, manufacturing a mold substitute and a prosthesis substrate; forming a groove gap in a set area, except for a retainer, of the bottom wall of the mold substitute, so as to form apouring gap between the bottom of a bridge body and the bottom wall of the mold substitute after the prosthesis substrate is placed on the mold substitute; pouring veneering porcelain slurry into themold substitute, and performing drying and hardening to form a layer to be cut; milling the to-be-cut layer according to the contour size requirement of the veneering porcelain on the surface of the prosthesis, and forming a to-be-sintered veneering porcelain material layer on the surface of the substrate; and placing the substrate covered with the veneering porcelain material layer in a sinteringfurnace to be sintered. The groove gap is formed between the bridge body of the prosthesis and the gum of the mold substitute, so that the veneering porcelain slurry can enter the bottom of the bridge body during pouring, the veneering porcelain slurry can completely cover the substrate, the surface veneering porcelain is not easy to shrink and crack in the later sintering process, and the molding quality of the veneering porcelain is ensured.

Description

technical field [0001] The invention relates to the technical field of dental prosthesis processing, more specifically, it relates to a dental prosthesis decorative porcelain molding process. Background technique [0002] Dental porcelain restorations generally consist of a substrate made of a porcelain material including zirconia and a layer of porcelain material (veneer) attached to the substrate. In the process of manufacturing the above-mentioned dental restorations, it is first necessary to pile up the decorative porcelain material on the zirconia base. After the decorative porcelain material is compacted, the decorative porcelain is stably fixed on the base by milling and sintering to achieve beautification of the teeth. The effect of the restoration. [0003] Usually, such as figure 2 As shown, the prosthesis includes a retainer, a pontic and a connecting body. In the process of stacking veneer materials, the restoration base needs to be placed in the die, and the a...

AI Technical Summary

Problems solved by technology

Due to the high tension of the decorative porcelain paste, the paste cannot effectively enter the bottom of the bridge, making the bottom of the bridge less porcelain and unable to meet the requirements of complete covering of decorative porcelain

After sintering, due to the heating and shrinkage effect of the veneer material on the surface of the restoration base, there will be openings in the veneer, thereby reducing the quality of the restoration

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