Method for manufacturing three-dimensional analysis tooth-preparation guide plate based on 3D printing and usage method thereof
A 3D printing and production method technology, applied in 3D printing, dentistry, dental prosthesis, etc., can solve the problems of poor correlation, complex production process, lack of analysis and consideration of restorations, etc., to achieve good tooth fit and improve effective The effect of resistance and small deformation
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[0042] Example 1
[0043] Embodiment 1 provides a 3D printing-based three-dimensional analysis preparation guide plate design. The method includes the following steps:
[0044] (1) Acquisition of digital model: By using an intraoral scanner to directly scan the patient’s oral cavity, or using a model scanner to scan the patient’s oral model / impression to obtain a digital model of the oral situation, such as figure 1 Shown is a schematic diagram of the acquired oral digital model.
[0045] (2) Virtual design target restoration: After importing the acquired oral digital model, refer to the current state of the adjacent teeth, teeth with the same name and antignathic teeth in the current oral model to personalize the tooth to be restored, and then design the obtained The target restoration and model are exported separately. Wherein, the target restoration refers to a tooth after restoration.
[0046] (3) Virtual assembly model and target restoration: import the designed target restorati...
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[0061] Example 2
[0062] This embodiment provides a method for using a 3D printed preparation guide plate in actual restoration. The 3D printing preparation guide plate is produced by any of the methods in the foregoing embodiments. The use method specifically includes the following steps:
[0063] Step A: Place the prepared tooth preparation guide on the teeth in the patient's mouth.
[0064] Step B. Use the depth bur to measure the gap between the tooth surface and the surface of the preparation guide plate at the position of the depth hole. When the measured gap is greater than or equal to the minimum thickness of the future restoration material, the tooth removal treatment is not performed here; If the gap is less than the minimum thickness of the future restoration material, the tooth here will be ground, and the amount of tooth removal is the difference between the minimum thickness of the future restoration material and the measured gap.
[0065] C. According to the calculated...
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