Homogeneous denture material and patternless manufacturing process

Abstract

The invention belongs to the technical field of denture preparation and particularly relates to a homogeneous denture material and a patternless manufacturing process. The material is mainly prepared from the following components in parts by weight: 100 to 120 parts of special water for a dental department, 95 to 105 parts of dental base acrylic resin powder, 0.8 to 2 parts of binding agent and 0.5 to 0.8 part of plasticizer. The patternless manufacturing process of the homogeneous denture material comprises the following steps: firstly, weighing all the components according to the weight parts; secondly, uniformly mixing all the components, then filling an injection pipe with a mixture, injecting the mixture into a plaster model with a denture female die cavity at a certain pressure by using a special injection molding machine; performing heat treatment under the condition that the temperature is 90 to 150DEG C and the pressure is 1 to 20MPa, and cooling to obtain a finished product. The denture material provided by the invention has the properties of high toughness and mechanical strength, good bacteria resistance, and the like.

Description

technical field [0001] The invention belongs to the technical field of denture preparation, and in particular relates to a uniform denture material and a moldless manufacturing process. Background technique [0002] Dentures are used for the restoration and replacement of missing, missing or dentition teeth, as well as for oral health and orthodontics. With the improvement of people's living standards and the development of stomatology, the clinical demand for high-tech oral material products has increased significantly. The development of oral restoration is inseparable from the development of oral materials and techniques. Denture restoration materials mainly include ceramics, resins and metal materials. At present, the metals used for denture materials at home and abroad are mainly precious metal porcelain teeth, Ni-Cr alloys, Co-Cr alloys, and titanium alloys. The non-toxic, non-irritating and good biocompatibility of precious metal porcelain teeth are unanimously soug...

AI Technical Summary

Problems solved by technology

Although PMMA is an ideal base material, due to its low toughness and high brittleness, there are still some unsatisfactory aspects, especially its compressive strength and tensile strength cannot meet some clinical requirements.

Moreover, the bonding strength between the PMMA base and the artificial tooth is insufficient. In clinical practice, it is often found that the artificial tooth falls off from the base during the use of the denture, making the denture unusable.