An integrated 3D printing method for polyether ether ketone dental restorations in different colors

Abstract

The invention discloses an integrated 3D printing method for polyether ether ketone oral prosthetics in different colors, comprising the following steps: S1: Obtaining the patient's upper and lower jaws and obtaining their digital three-dimensional model data and obtaining the occlusal relationship between the upper and lower dentition and the patient's personality tooth color and gum color; S2: Based on the 3D data in S1, design the digital oral restoration and adjust its occlusal contact relationship with the opposing teeth to obtain the final 3D data model of the restoration; S3: According to the tooth color Different from the color of the gums, the 3D data model of the restoration is separated from the teeth and gum parts, and the printing data of different parts of the oral restoration are obtained and imported to the 3D printing device; S4: Determine the color of each part of the restoration (tooth color and gum color respectively). color), respectively proportioned and transported to the two print heads of the integrated 3D printing device for integrated printing to obtain the final oral restoration.

Description

technical field [0001] The invention relates to the technical field of oral restorations, in particular to a method for making polyether ether ketone oral restorations of different colors through integrated 3D printing. Background technique [0002] The clinical selection of traditional oral restorative materials is still limited to the "old three" (resin, metal, and ceramics). Each of the three materials 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 re...

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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