Face scanning positioning structure applicable to whole mouth without tooth

Abstract

The invention discloses a face scanning positioning structure applicable to a whole mouth without tooth. The face scanning positioning structure is characterized by comprising an irregular shaped mainbody, at least a complex number of convex parts and at least a complex number of concave parts, wherein an asymmetric surface plate part is defined on the irregular shaped main body in an X-axis direction; an asymmetric side plate part is defined in a Y-axis direction; a thickness is defined in a Z-axis direction; the convex parts are at least distributed in preset surface positions of the asymmetric surface plate part and the asymmetric side plate part and are at convex surface states; the complex number of the concave parts are at least distributed in preset surface positions of the asymmetric surface plate part and the asymmetric side plate part and are at concave surface states; the complex number of the convex parts and the complex number of the concave parts form the irregular shaped main body and are both at asymmetric structure states in the X-axis direction, the Y-axis direction and the Z-axis direction. Due to the irregular convex-concave differences, image overlapping errors in specific axis directions can be effectively reduced when preset face scanning positioning is carried out, and in addition, errors in different axial overlapping positions can be easily observed.

Description

【Technical field】 [0001] The invention relates to a facial scanning positioning structure, especially a facial scanning positioning structure applicable to a full mouth without teeth. 【Background technique】 [0002] The need to make complete dentures is common in patients who are elderly or have lost all teeth due to bad habits (such as smoking, eating betel nuts, etc.). The common form of complete dentures is a removable denture with a complete set of upper and lower jaws. Before making complete dentures or carrying out denture restoration design and reconstruction, the dynamic inter-jaw relationship must be recorded first to ensure the applicability and comfort of the subsequent finished product. Clinically, the dynamic inter-jaw relationship is recorded for edentulous patients, which is the so-called Gothicarch movement path recording. When the patient wants to scan the face in 3D after recording the relationship between the jaws of the patient, since the patient has no ...

AI Technical Summary

Problems solved by technology

When the patient wants to scan the face in 3D after recording the relationship between the jaws of the patient, since the patient has no teeth as the feature point positioning, a positioning film outside the mouth must be used as the positioning feature. However, the common structure of the positioning film is usually a standard plane Thin plate-shaped, with flat black dots on the surface as a feature, although its form is common, but when the 3D images overlap after scanning, the positioning error in the Y-axis is large, and the design of the black dots on such planes is easier than the triangular grid point entity The 3D image presents incomplete images, which affects the accuracy and quality of its denture production

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