Oral maxillofacial one third vertical dimension measuring ruler

Abstract

The invention discloses a 1 / 3 vertical height dipper stick below the mouth surface, includes a segment angle measurement plate, a nose subpoint locating lever, a gnathion locating lever, two vertical height rods, a parallel structure keeping rod and a lead plummet. A pen is used to draw a side orbit subpoint and an ear front point for the patient, and the nose subpoint locating lever on the angle measurement plate is arranged on the two points namely the Frankfurt plane, and the head does the pitching motion. When the metal plummet on the angle measurement plate points to 90 DEG, the head stops moving and holds the relatively still of the upper body and the neck. The angle measurement plate is transferred to the working position under the state of keeping still, namely the nose subpoint locating lever is at the nose subpoint, the angle measurement plate is like the head doing the pitching motion once again to make the lead plummet point to the 90 DEG upright position, here the Frankfurt plane transfer is completed. Finally the parallel structure keeping rod end is move and energize to make the gnathion soft tissue reduced as far as possible. The vertical height required to measure is computed according to the degree on the angle measurement plate.

Description

technical field [0001] The invention relates to a dental auxiliary appliance, in particular to a measuring ruler for the vertical height of 1 / 3 below the oral cavity surface. Background technique [0002] It is necessary to ensure that the patient has the same occlusal vertical height before and after complete denture restoration. The occlusal vertical dimension (OVD) refers to the height of the lower third of the face when the maximal interdental contact of the upper and lower jaws occurs. Accurate measurement is required to restore the physiological occlusal height accurately, which is beneficial to the long-term health of the temporomandibular joint. At present, clinically, the determination of the vertical distance is mostly carried out by the jaw position method, facial equalization method, facial shape observation method, etc. However, it is necessary to use tools for measurement through these methods, otherwise it is difficult to obtain a satisfactory denture. [00...

AI Technical Summary

Problems solved by technology

The soft tissues of the chin and lips of some patients are plump and elastic, and the degree of mandibular protrusion varies greatly among individuals. The shorter positioning rod under the nose / under the chin often cannot be placed at the ideal position; the angle between the measuring ruler and the face has a great impact on the measurement results , the lack of objective reference points / planes makes the repeatability of measurement data poor

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