Will Lin Zhiying be recovered by 3D printed facial reconstruction "not old god"?Expert answer

Lin Zhiying's father and son have recently attracted widespread attention. According to media reports, Lin Zhiying may conduct "3D printing technology for face reconstruction." Can this sound of a sense of technology full of technology restore "not old -fashioned"?

The reporter learned that 3D printing to help facial reconstruction has actually been used in clinical practice, but 3D printed "bones and tissues" directly implanted into the human body, and more in clinical exploration. Jiangsu Provincial Stomatology Hospital (Affiliated to the University of Medical University) has previously completed 3 cases of 3D printed mandibular implant surgery. Experts said that there is still a long way to go.

You may not know: the facial fracture is returned to the "dentist" tube

Many people feel that they have to find orthopedics when they are fractured.

"This is because the fracture of the maxillofacial area and the fractures of other parts such as the limbs are very different." Deputy Chief Physician Li Huaiqi, deputy chief physician of Oral Hospital of Stomatology Hospital in Jiangsu Province, told the Yangtze Evening News/Zi Niu Journalist that the root of our teeth was buried deep in the maxillary Inside the bone is a very important chewing organ. The bones in other parts of the human body are broken or shifted. Most of them only need to return to the original form. Interactive problems, emphasizing the recovery of function, each item is important, so it is not a simple orthopedic doctor to deal with it.

Oral and maxillofacial surgery is sometimes the problem of life -saving. "We have been diagnosed with a female patient. When the truck is rolled out, when the vehicle is slipped, the patient's face is also slid out of the highway. The huge external force makes the entire soft tissue of the half face tear off, and the bone head fractures The half -faced meat is gone. "Li Huaiqi said that facial blood supply was abundant. The patient first faced hemorrhage rescue, and then the facial damage was treated. The bone is broken, and the titanium plate is fixed; the facial muscle defect is defeated, and the adjacent skin flap is designed from the hidden part of the neck to cover the wound; The part is taken to the nerves, like a bridge to build a road to connect the nerves at both ends. The patient's surgical hospitalization has undergone more than 10 days, and later rehabilitation training and neural function recovery will also go through a longer time. Overall, the patient with a half -face face was repaired and recovered well.

About 3D printing: "Template" is very common, so that doctors will no longer "rely on feelings"

Li Huaiqi told reporters that 3D printing is an industry that has developed rapidly in the medical field for more than a decade. It is a product of the development of biological organization engineering, material science, computer image and other technologies. "For example, the patient's face defects, the traditional repair is the doctor's" feeling ', according to his own experience, compare the appearance of the other side to complete this side repair. But after the computer digital technology, we we we have, we we have, we have a computer digital technology. You can import the patient's photos, CT, or magnetic resonance data to the system, and the computer can complete the reconstruction work. "After the reconstruction, the 3D printing technology can be used to use titanium or other polymer materials. In the shape of the bone, patients can intuitively see the repair effect, and the doctor's repair also has a template.

Use 3D printing technology to make templates, and on this basis, it has been widely used clinically. Especially the oral and maxillofacial surgery, because the skeleton of the face is arc, and the precise requirements are high, so it is also very suitable for 3D printing technology.

Deputy Chief Physician Li Huaiqi gave an example. A young man had tumors on his jaw. Although the tumor was benign, he was very large, long, long and cut. "The damage of the mandibular bone cannot bear, which is equivalent to the tumor that eventually eats the bones and the entire jaw bone is broken. If only one titanium alloy plate is hit, the function has a great impact. The fibula of the ministry is repaired. "Li Huaiqi explained that the jaw bone had arc and the leg bone was" straight ". At this time, 3D printing technology was used. After the digital reconstruction, the doctor carried out the pre -forming type of titanium alloy plate based on the printed normal mandibular bone shape, which was very fit. With the template, the doctor then shaped the leg bone according to the shape of the mandibular bone, stitched a paragraph, and finally completed the entire reconstruction and repair process.

Printing the bone implantation into the human body, Jiangsu has successful cases

According to media reports, Lin Zhiying's face reconstruction plan may be that a large part of the skeleton on the face will be implanted through titanium alloy, and the other part of the more fine bones will be rebuilt through 3D printing technology. Adherence to growing into it, integrate implants with bones.

Printing the bones that can be implanted in the human body sounds very technological. Li Huaiqi told the Yangtze Evening News/Zi Niu Journalist that 3D printing "bones and flesh" that can be implanted can actually be explored clinically. Around 2015, the Shanghai 411 All -Army Oral Center printed a section of mandibular implantation into the human body through 3D, which is the first 3D printed mandibular implant surgery in the country. The "chin" joint is the world's first case of 3D printing of mandibular joint implantation. Jiangsu Provincial Stomatology Hospital also completed 3 cases of 3D printed mandibular implant surgery around 2020, and all 3 cases were successful. "But 3D printing bones to directly implant the human body. In fact, there is still a long way to go. It is even more difficult to print soft tissues such as" flesh and blood '. "Li Huaizhi said that the country has very strict requirements for medical implantation. The material of the human body also needs to be detected by many aspects such as biological safety. What materials are used for printing, the repair parts are different, and the materials are different. 3D printing is personalized customized and there is no way to produce large -scale production. Therefore, there is no ready -made and very clear standard to measure the product. Each implantation case must be strictly ethical review. At present, 3D printing is directly implanted into the human body's "bone", and the price is also very expensive. The "volume" of the mandible may cost more than 100,000 yuan. These are objectives that this technology cannot be widely used. limit.

"In addition, from the perspective of biology, the bones have evolved for thousands of years. They are very precise. They have good strength and can withstand the power of conduction such as tooth chewing. They can also attach muscle nerve blood vessels to control the function of exercise. 3D printed materials cannot be compared with native bones. "Li Huaiqi told reporters that neuromuscular muscles are still difficult to attach to the printed materials. It is almost impossible to repair teeth on these materials. One point, the materials are not very compliant with the requirements of biomechanics, and it is prone to postoperative infection and exposure. These are issues that need to be overcome.

Extended Question: Can Lin Zhiying's "Non -Old God" recover?

Many people care about Lin Zhiying's "Non -old God" to recover through 3D rebuilding technology? Some people have a brain. If the face 3D is reconstructed, can the doctor "hand well" the entire tolerance, the upper point of the upper point, the nose, and filling some fat, can the face be "optimized" more?

Li Huaiqi said that many facial fractures are caused by trauma, which indeed affect the problem of appearance, but the oral and maxillofacial surgeon pays more attention to the medical itself. If the patient's injury is complicated and even accompanied by a large range of defects, then it must be that the medical treatment should be performed first, and the outline will be repaired. After 3-6 months, the condition was stable, the local recovery was better, and then personalized aesthetic adjustment, "remedial" measures such as scar removal, filling depression. It is impossible to complete the surgery and therapeutic surgery at the same time. The patients need to communicate with the doctor and cooperate well to maximize the face.

Source: Yangtze Evening News

Edit: Liu Yuhong

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