Method for directly measuring intercuspal positions of alveolar ridges of edentulous jaws

Abstract

The invention relates to a method for directly measuring intercuspal positions of alveolar ridges of edentulous jaws. The method includes the steps that an upper edentulous jaw plaster model and a lower edentulous jaw plaster model are scanned to obtain first data; at the small mouth opening position, the face, the upper-jaw alveolar-ridge front tooth region and the lower-jaw alveolar-ridge front tooth region are scanned to obtain second data; the first data are matched with the second data, and data of the portion, above the apex nasi, of the face and the data of the upper-jaw model are grouped to obtain third data; data of the chin and data of the lower-jaw model are grouped to obtain fourth data; at the rest jaw position, the face is scanned to obtain fifth data; the third data and the fourth data are matched with the fifth data; lower-lip frenum root positions of the lower edentulous jaw model in the fourth data are extracted, and the lower-lip frenum root positions and the lower edentulous jaw model are grouped to obtain sixth data; in the third data, mapping points of double-side processus condyloideus on the skin of the face are interactively extracted, and the sixth data are rotated upwards by 3 mm with the connecting line of the mapping points as a rotating axis; upper-lower-edentulous jaw alveolar ridge data of the intercuspal positions are obtained. By means of the method, complex steps for manufacturing a occlusal splint support can be replaced, and the intercuspal positions between the upper alveolar ridge and the lower alveolar ridge of an edentulous jaw patient can be directly measured.

Description

technical field [0001] The invention relates to a digital measuring method for an edentulous jaw, in particular to a method for directly measuring the cusp position of an edentulous alveolar crest. Background technique [0002] When all the teeth in the human mouth are missing, it is called edentulous, or edentulous. Edentulous patients not only lose most of the oral functions related to teeth, such as chewing, pronunciation, etc., but also have progressive collapse of facial soft tissues. The edentulous jaw needs to receive a complete denture (full denture) restoration treatment, using artificial dentition and base that conform to the local anatomical and physiological characteristics of the oral cavity to reconstruct oral function and restore facial appearance. [0003] Due to the loss of the support of the upper and lower teeth, the edentulous patient cannot stably occlude the upper and lower alveolar ridges in the cusp cross position. In the traditional restoration pro...

AI Technical Summary

Problems solved by technology

[0004] However, the manual production process of occlusal trays is very cumbersome and highly dependent on operating skills and experience. It is difficult for beginners and stomatology students to quickly master and complete with high quality.

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