Shenzhen PioCreat 3D Technology Co., Ltd.

简体中文

News
News

Industry 3D printing equipment

Application of 3D printing in dentistry

2022/09/26

According to the fourth national oral health epidemiological survey report, 32.3% of people aged 35-44 years have tooth deficiency; 55-64 years old, the proportion increased to 66.2%; 65-74 years old, the proportion of missing teeth is as high as 81.7%.
You think that teeth can stay with you forever, but in fact, they are just passers-by in your life.

There are many hazards of tooth loss, such as affecting appearance, inducing dental caries, leading to a significant increase in the prevalence of cardiovascular and cerebrovascular diseases, Alzheimer's disease and other diseases.

It is necessary to repair the missing teeth as soon as possible. Because of the different characteristics of each person's teeth, traditional tooth repair is not only difficult to accurately grasp the accuracy, but also takes a long time. 3D printing technology can meet the requirements of dental precision, complexity and customization, and accelerate the progress of the treatment process.

The application of dental 3D printer technology in the field of dental prosthetics mainly includes removable dentures, orthotics and dental implants.

Dental implant is a kind of dental implant method, in which an artificial root (implant) is implanted into the oral alveolar bone tissue as a support, and the crown is restored on the artificial root.


In the traditional methods of dental implant, the steps of tooth extraction, preparation of dental implant hole, bone powder implantation, collagen membrane coverage, embedded healing, crown making and wearing are required. The treatment cycle is long and the cost is high. In addition, the traditional dental implant method has many shortcomings, including the implant teeth and the extraction socket do not fit, the immediate implantation after extraction requires bone graft, and it is difficult to repair immediately.

The 3D printing implant can directly form the whole tooth body containing the root. Only minimally invasive extraction, implant and crown restoration are required, which can achieve seamless integration with the original alveolar, reduce the pain of patients. The chair side treatment cycle is short, and the cost is also greatly reduced.

Dental implants are mainly composed of crowns and implants. Pure titanium (or alloy) is widely used because of its good biocompatibility, mechanical properties and corrosion resistance.

The materials of implants include metal implants, ceramic implants, carbon implants, polymer implants, composite materials, etc; Crown materials include gold, cobalt chromium alloy, nickel chromium alloy, ceramic alloy and other metal materials, as well as zirconia all ceramic, resin and so on. The printing technology of dental implants and metal crowns is mainly selective laser melting (SLM). The printing technology of dental crowns and bridge casting models is mainly light curing molding (SLA), digital light processing (DLP), and liquid crystal display (LCP).

The Dental Hospital of Tianjin Medical University has developed a new type of dental implant using digital personalized design and 3D printing technology. In this implant, the implant body and the outer layer of bionic alveolar bone are integrated, and the thickness of the outer layer of bionic artificial alveolar bone is 0.2~3.0 mm.

In the process of manufacturing 3D printed implant teeth, the doctor first obtains the medical image data of the patient's residual tooth root and alveolar bone tissue structure, and extracts the data needed to design the bionic tooth root tissue and its surrounding alveolar bone tissue outer structure from the acquired data to establish a 3D model. Then, the format of 3D digital model is converted, and the file after format conversion is transferred to 3D printing equipment for solid printing.

The application of 3D printing technology in dental appliances mainly includes lingual appliances and invisible transparent appliances.
The precision and stability of the traditional lingual bracket are poor, which can not fully fit with the tooth surface, and is inconvenient to paste, wasting time. The personalized lingual bracket made by the selective laser melting 3D printing technology can realize the direct molding of the personalized bracket, fully fit with the lingual tooth surface, and avoid casting defects such as cavities and cavities. From the long-term clinical effect, it is not easy to fall off, which greatly simplifies the treatment procedure.

Most of the invisible transparent orthodontics are SLA (light curing molding) technology and DLP (digital light processing) technology. Now Piocure has also introduced LCD technology to make invisible braces. The invisible orthodontic technology is the first 3D printing commodity to realize mass production in the world. The 3D printing technology can realize the mass customization production of dental models at different stages of correction.

Through the three-dimensional digital modeling of the patient's teeth, and the analysis and processing of the patient's tooth conditions, the digital correction is realized, so as to achieve the correction solution. Then, the dental models of patients at different stages are printed by using the light curing stereo molding technology, and then thermoplastic molding is carried out on the dental models at each stage to obtain transparent orthotics and achieve the effect of invisible beauty.
RELATED SUGGESTION
RECOMMENDED PRODUCTS