Manufacturing process of denture framework

Abstract

The invention discloses a manufacturing process of a denture framework. A technical scheme of the process comprises the following steps: a, designing and manufacturing a dental model; b, copying a refractory material model; c, making a wax pattern; d, arranging a sprew on the wax pattern; e, performing embedding treatment; f, roasting a casting ring and the wax pattern in the casting ring, whereinthe step f comprises specific steps as follows: f1, after embedding is completed, the wax pattern and the casting ring are simultaneously put into a roasting device; f2, treatment at low-temperaturesection is performed: the temperature is raised to 280-320 DEG C from room temperature within 30-40 minutes and is kept constant for 30-40 minutes; f3, treatment at medium temperature section is performed: the temperature is gradually increased to 690-710 DEG C within 25-40 minutes and kept constant for 30-40 minutes; f4, treatment at high-temperature section is performed: the temperature is gradually increased to 800-850 DEG C within 10-20 minutes; g, performing casting and taking out the denture framework after completion of casting. The increasing speed of the roasting temperature in the roasting process is controlled, so that the temperature in the roasting process is increased slowly and evenly to the greatest extent, moisture in an embedding material is evaporated, and the success rate of subsequent casting is increased.

Description

technical field [0001] The invention relates to the field of removable partial dentures, in particular to a manufacturing process of a denture bracket. Background technique [0002] Removable partial dentures are supported by the remaining natural teeth, mucous membrane, and alveolar bone in the mouth, and are retained and stabilized by the retainers and bases of the dentures to repair the defective dentition and adjacent soft and hard tissues , and can maintain the health, beauty and comfort of the oral tissue, a prosthetic that patients can take and wear by themselves. [0003] In the manufacturing process of the existing denture brackets, firing is performed before the brackets are cast, so that the molten film material in the casting circle melts and overflows to form a mold cavity for casting. [0004] The control of the firing temperature during the casting process plays a vital role in the success rate of the subsequent stent casting. If the temperature rises too slo...

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Problems solved by technology

[0004] The control of the firing temperature during the casting process plays a vital role in the success rate of the subsequent stent casting. If the temperature rises too slowly during the firing process, the moisture in the embedded material in the casting ring will evaporate unevenly, which will cause the stent to The impact resistance of the embedding material is reduced, and it is easy to fail during casting; if the temperature rises too fast, it is easy to cause a large amount of water in the embedding material to evaporate in a short period of time, resulting in an excessive temperature difference between the inside and outside, causing the mold to burst

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