A method of 3D printing personalized periodontal tissue regeneration materials

Abstract

A method for 3D printing personalized periodontal tissue regeneration materials, using preoperative cone beam computed tomography (CBCT) equipment to obtain bone defect morphological data of patients with periodontal bone defects, and determining bone graft morphological data according to the bone defect morphological data, And according to the shape data of the bone graft, determine its morphological slice processing data and raw materials for 3D printing, and then use the morphological slice processing data and raw materials to print out personalized periodontal tissue regeneration materials through a fused deposition modeling FDM three-dimensional printer. It is beneficial for doctors to operate conveniently and achieve a relatively ideal operation effect.

Description

technical field [0001] The invention relates to a regeneration and reconstruction technology of periodontal soft and hard tissue, in particular to a method for 3D printing personalized periodontal tissue regeneration materials, which utilizes preoperative cone beam computed tomography CBCT equipment to obtain bone defect morphological data of periodontal bone defect patients , determine the bone graft morphological data according to the bone defect morphological data, and determine its morphological slice processing data and raw materials for 3D printing according to the bone graft morphological data, and then use the morphological slice processing data and raw materials through fused deposition molding FDM 3D printer prints personalized periodontal tissue regeneration materials, which is conducive to convenient operation by doctors and achieve ideal surgical results. Background technique [0002] The prevalence of periodontitis in the population is as high as 90%, and it is...

AI Technical Summary

Problems solved by technology

The cut membrane needs to fit the adjacent tooth surface and cover the bone defect area, and the subosseous pocket is often found on the adjacent surface, that is, the membrane needs to fit the two adjacent tooth surfaces, while the adjacent surface of different roots The morphology is inconsistent, so pruning a completely ideal membrane is theoretically very difficult

If the membrane is not trimmed enough, it will not be able to prevent the rapid growth of epithelial tissue. If the membrane is trimmed too much, it will affect the coverage of the gums. Once exposed to the mouth, it will easily lead to infection

Even if a skilled clinician first cuts the membrane with a template, puts it in the bone defect area for verification, trims it, and checks it again, it will take at least 10 minutes to finally cut out a basically suitable membrane, and the time spent by an unskilled doctor is even more During this period of time, patients are often asked to close their mouths and rest. A large number of microorganisms in the oral cavity may migrate to the bone defect area after debridement, which greatly increases the possibility of infection at the surgical site, prolongs the operating time, and increases the pain and suffering of the patient. operator's difficulty

Moreover, since the membrane is directly attached to the defect area, there is a lack of retention with the underlying bone tissue and the adjacent root surface. During the suturing process of the gums, once it is touched, it will cause the displacement of the membrane, and it is necessary to reposition the membrane. location, greatly increasing the difficulty of the operation

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