Digital designing and manufacturing method for apical surgery guide plate

Abstract

The invention relates to a digital designing and manufacturing method for an apical surgery guide plate. The method comprises the steps that 1) intraoral soft and hard tissue data of a patient is acquired through oral CBCT scanning, and a CBCT model is reconstructed in a three-dimensional mode; 2) a three-dimensional digital image of the surface information of teeth and mucosas of the patient is acquired through intraoral 3D optical scanning; 3) the CBCT model is combined with a three-dimensional optical scanning model to accurately reconstruct a target tissue; 4) 3D model design is carried out on the apical surgery guide plate by applying reverse engineering software; and 5) the guide plate is manufactured according to a 3D apical surgery guide plate model through 3D printing. According to the method, the CBCT three-dimensional image and intraoral 3D scanning are combined, the cut length, angle and depth of a root apex and the range of the root apex lesion are accurately positioned through the computer-aided design, the apical surgery guide plate is manufactured through 3D printing, and therefore the surgery can be accurately controlled, the surgical risk can be reduced, in addition, the operation difficulty can be lowered to the maximum extent, and the operation efficiency can be improved.

Description

technical field [0001] The invention relates to a root tip surgery guide plate, in particular to a digital design and manufacture method of the root tip surgery guide plate. Background technique [0002] Microscopic apical surgery is increasingly carried out in China, saving a large number of teeth that are still difficult to heal after conventional root canal treatment, or difficult to implement non-surgical retreatment in the presence of restorations such as posts and crowns. However, how to accurately locate the root tip, accurately remove the root tip, and protect the adjacent important tissue structures are important links to ensure the success of the operation. However, in the operation, it still relies on the experience of the operator, and lacks the judgment and guidance of objective means. [0003] The computer-aided design and production of surgical guides combined with three-dimensional images has been widely used in implant surgery, which can accurately guide th...

AI Technical Summary

Problems solved by technology

However, whether the surgical guide can be used in apical surgery, its accuracy and the effect of its use are only rarely reported in foreign countries

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