Method for integrated 3D printing of polyether-ether-ketone oral restorations with different colors

Abstract

The invention discloses a method for integrated 3D printing of polyether-ether-ketone oral restorations with different colors. The method comprises the following steps: S1, acquiring the upper jaw andthe lower jaw of a patient, acquiring digital three-dimensional model data of the upper jaw and the lower jaw, and acquiring an upper dentition and lower dentition occlusion relationship and personalized tooth colors and gingival colors of the patient; S2, on the basis of the three-dimensional data in S1, designing a digital dental restoration and adjusting the occlusal contact relationship between the digital dental restoration and the jaw teeth to obtain a three-dimensional data model of the final restoration; S3, according to different tooth colors and gingival colors, separating the three-dimensional data model tooth of the restoration is separated from the gingival part to obtain printing data of different parts of the dental restoration body and importing the printing data into 3D printing equipment; and S4, respectively determining colors (tooth color and gingival color) of each part of the restoration, carrying out proportioning respectively, and conveying the date to two printing heads of the integrated 3D printing equipment, and carrying out integrated printing to obtain a final dental restoration material object.

Description

Technical field [0001] The present invention relates to the technical field of oral restorations, in particular to a method for manufacturing polyetheretherketone oral restorations of different colors by integrated 3D printing. Background technique [0002] The clinical choice of traditional dental restorative materials is still limited to the "oldest three" (resin, metal, ceramic), and the three materials have their own limitations and cannot meet clinical needs. The color of the resin is similar to that of natural teeth, and the aesthetics is better. However, the resin material is low in hardness, easy to age, easily worn by the natural teeth of the opposite jaw, and has problems such as micro-leakage. Although continuous material improvements have been made, it has been increasingly used in clinical applications. The less; the metal material has the advantages of high strength, corrosion resistance, and good fatigue resistance, but the disadvantages are that the color is not b...

AI Technical Summary

Problems solved by technology

[0002] The clinical selection of traditional oral restorative materials is still limited to the "old three" (resin, metal, ceramics), each of which has its own limitations and cannot meet clinical needs

The color of the resin is close to that of natural teeth, and the aesthetics are good. However, the resin material has low hardness, is easy to age, is easy to be worn by the natural teeth of the opposite jaw, and has problems such as micro-leakage. The less; metal materials have the advantages of high strength, corrosion resistance, and fatigue resistance, but the disadvantages are unsightly color and high hardness (easy to wear the natural teeth of the opposite jaw); in recent years, patients have better aesthetic requirements, and Some patients reject the choice of metal materials (sensitivity to metal odor, metal allergy, and the negative impact of metal on MRI examinations, etc.), "non-metallized oral restoration materials" are becoming the mainstream of clinical material selection

[0003] At present, ceramics are the most representative inorganic non-metallic repair materials, which have the advantages of beautiful color and good biocompatibility, but are brittle, easy to break, and expensive, which greatly restricts their clinical indications (for example, they cannot be used in Removable dentures); At present, the ceramic materials commonly used clinically are mainly glass ceramics and zirconia ceramic materials, but the hardness and elastic modulus of ceramic materials are far greater than natural teeth, and it is easy to wear the natural teeth of the opposite jaw. Excessive body weight also affects its clinical effect

[0004] Polyetheretherketone (PEEK) is a special engineering plastic with excellent properties such as high temperature resistance, self-lubricating, processed and mechanical strength, which can be manufactured and processed into various mechanical parts; PEEK material has the following performance advantages: Compatible with resin Compared with materials, it has good strength, durable wear resistance, and aging resistance; compared with metal materials, its advantages are large space for aesthetic performance improvement, excellent biocompatibility, and semi-radiation resistance; compared with ceramic materials, its material toughness Far better than ceramics, lighter in weight and lower in cost; PEEK materials can only be made into single-color restorations in the field of oral restoration, and the processing technology is only milling and injection molding. 3D printing PEEK to make oral restorations It has not been reported clinically. The appearance color of the existing pure PEEK material is light brown, which is not suitable for direct use in the production of oral restorations. It needs to be improved in color to meet the clinical requirements of oral aesthetic restoration; The processing methods for oral restorations are mainly traditional injection molding pressing and digital milling. The former processing procedure is cumbersome, time-consuming and laborious, while the latter wastes a lot of material and is not suitable for forming complex and thin-walled finished products.

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