Tooth jaw three-dimensional digital modeling method based on temporal-mandibular joint stability

Abstract

The invention discloses a tooth jaw three-dimensional digital modeling method based on temporal-mandibular joint stability. The tooth jaw three-dimensional digital modeling method comprises the following steps of using a three-dimensional scanner for scanning to obtain a tooth jaw three-dimensional digital model of a patient; taking a positive position X-ray image and a lateral position X-ray image of the head of the patient at the median relation position; constructing a virtual X-ray projection model and a reference coordinate system; respectively adjusting positions and angles of upper andlower tooth jaws of the tooth jaw three-dimensional digital model in the virtual X-ray projection model, and calculating a two-dimensional X-ray projection image; registering the two-dimensional X-rayprojection images of the upper tooth jaw and the lower tooth jaw with an actual skull positive position X-ray image and an actual lateral position X-ray image, and recording parameters of the upper tooth jaw and the lower tooth jaw in a reference coordinate system during optimal registration; inversely solving spatial position information of the temporal-mandibular joint; reconstructing a dentaljaw three-dimensional digital model by using the upper and lower dental jaw three-dimensional digital model information during optimal registration; and further constructing a jaw occlusion motion model and a mechanical decomposition model of the three-dimensional digital model, and providing a virtual operation function and an operation prediction function according to the model.

Description

technical field [0001] The invention relates to the field of orthodontic digital technology, in particular to a three-dimensional digital modeling method for jawbone based on the stability of temporomandibular joints. Background technique [0002] Malocclusion is one of the high-incidence diseases in the department of stomatology, which will have adverse effects on personal oral health and appearance, and in severe cases, it will cause abnormal oral function. At present, orthodontics-orthognathic surgery is the main method for the treatment of malocclusion. [0003] An ideal orthodontic operation usually involves the following steps: 1. By observing the external manifestations of the patient’s malocclusion and asking about the relevant family history of the patient, a preliminary judgment can be made on the type of malocclusion and the genetic medical history; 2. The patient is supported by both hands Or put the patient's temporomandibular joint (TMJ) in the median position...

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