JPH0620490Y2 - Mouthpiece for panoramic X-ray equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention mainly relates to a mouthpiece for positioning a patient on a dental panoramic X-ray imaging apparatus while holding the incisal occlusion position.

[Prior Art] Conventionally, as a mouthpiece for a dental panoramic radiography apparatus, the upper and lower jaw dentitions are positioned on the same plane of the panoramic X-ray tomographic region having a thickness of about 5 mm along the dental arch. In order to avoid overlapping of the upper and lower teeth, a positioning technique called incisal occlusal position is used.
There is one in which a groove for engaging the upper and lower front tooth portions is provided at the tip of a cutting edge gauge supported on the chin rest disclosed in No. 06 and Jitsukai Sho 60-17705 so as to be vertically adjustable. Further, there is known a mouthpiece having a substantially T-shaped cross section and a curve along the dental arch shown in FIG. 6 of Japanese Utility Model Publication No. 57-57689. (Hereinafter, referred to as Prior Art B) [Problems to be Solved by the Invention] In the above Prior Art A, a groove for engaging the upper and lower front tooth portions is provided at the tip of the incision gauge so as to face each other. However, the groove shape is not a curved shape but a shallow linear shape, and at most there is only the width of the incisor, which makes it difficult to match the shape of the dental arch. Since the position moves back and forth on the chin rest, the operator could only check the forward and backward tilt of the head.

Further, in Prior Art B, since it has an occlusal part having a T-shaped cross section and a curve along the dental arch, the thickness of the part inserted into the oral cavity is the thickness of the occlusal part although it fits to the dental arch. No groove is formed as in the above. Therefore, when the patient naturally bites the mouthpiece, the lower dentition is usually in the natural occlusal position inside the upper dentition, but the structure is such that the mouthpiece can be bitten in the natural occlusal position. ，
Sometimes, the lower dentition was displaced from the X-ray tomographic region and a clear X-ray image could not be obtained. Also, since panoramic X-ray imaging takes about 20 seconds, if the occlusal position changes during this period, the X-ray image will be disturbed. I couldn't hold it down completely. Therefore, an object of the present invention is to securely prevent the dental arch from being displaced when the patient is occluded with the mouthpiece for the panoramic X-ray apparatus and to accurately position the dental arch. A line device mouthpiece is provided.

[Means for Solving the Problems] The present invention is a substantially rectangular parallelepiped mouthpiece having a width including at least part of the incisors and lateral incisors, and the shape of the anterior arch part in the width direction. In the mouthpiece for a panoramic X-ray apparatus, a concave groove extending along a curve similar to the above is formed on the upper and lower surfaces so as to face each other in the thickness direction.

Further, the present invention is characterized in that a positioning display portion is provided at the center position in the width direction on at least the upper surface of the mouthpiece.

[Operation] According to the present invention, the mouthpiece for the panoramic X-ray apparatus has concave grooves on the upper and lower surfaces, and each concave groove extends in the width direction along a curve similar to the shape of the front tooth portion of the dental arch. The upper and lower surfaces are formed so as to face each other in the thickness direction. In such a state that each groove is occluded, at least a part of the incisors and lateral incisors can be fitted to prevent angular displacement centered on the anterior teeth of the upper and lower jaws. It is possible to reliably prevent the displacement of the dental arch during imaging.

Further, according to the present invention, since the positioning display portion is provided on at least the upper surface of the mouthpiece, it is possible to accurately position the centers of the upper and lower jaws such as the midline at the center position of the mouthpiece. As a result, the positioning accuracy can be improved.

[Embodiment] FIG. 1 is a perspective view showing a mouthpiece 1 for a panoramic X-ray apparatus according to an embodiment of the present invention, and FIG. 2 shows a usage state seen from a section line XX in FIG. It is sectional drawing for demonstrating. The panoramic X-ray apparatus mouthpiece 1 of the present embodiment is
The mouthpiece 1 has a substantially rectangular parallelepiped shape, and on the upper and lower surfaces near the front end portion 2, curved groove grooves 3 in which an occlusal groove 3 is recessed by front teeth to approximate a dental arch are formed on the upper and lower surfaces. Are provided so as to face each other in the thickness direction (vertical direction in FIG. 2). As shown in FIG. 2, the groove 3 preferably has a substantially vertical surface 5 on the buccal side and about 4 teeth on the lingual side in accordance with the tooth shape.
The inclined surface 6 is 5 °, the depth of the concave groove 3 is about 5 mm, and the width is as shown in FIG. 3, the incisor tooth (also called the first incisor tooth) which is the front tooth portion of the dental arch m. ) 10a, 10b and side incisors (also referred to as second incisors) 11a, 11b, so that the width, as a range including a portion of the incisors 10a, 10b and side incisors 11a, 11b L
= About 20 to 40 mm, the upper jaw 7 and the lower jaw 8 of the anterior tooth part are surely held in the groove 3, and the lower jaw 8 moves to the lingual side particularly by the lingual side inclined surface 6 of the groove. Can be prevented.

Further, 4 is a positioning line which is a positioning display section provided at the center of the front upper surface and front side surface of the mouthpiece,
It may be formed in a protruding shape or may be drawn.

Further, this mouthpiece may be made of a material such as styrofoam, which is transparent to X-rays and has a high flexibility.

The details of the usage are the same as those of the mouthpiece in Japanese Utility Model Publication No. 57-57689, and are omitted here.

[Advantage of the Invention] As described above, according to the present invention, the mouthpiece for a panoramic X-ray apparatus extends along a curve similar to the shape of the anterior tooth portion of the dental arch, and at least a part of the incisors and lateral incisors is provided. Since the width is included, it is possible to surely prevent the displacement of the occlusal position of the patient in panoramic X-ray imaging and accurately position and image.

Further, according to the present invention, since the positioning display portion is provided on the mouthpiece, the reference portion such as the midline of the patient can be accurately matched with the positioning display portion, and thus the positioning can be performed. The accuracy can be significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mouthpiece 1 for a panoramic X-ray apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional plane X- of FIG.
FIG. 3 is a cross-sectional view for explaining the usage state viewed from X, and FIG. 3 is a diagram showing a positional relationship between the panoramic X-ray imaging mouthpiece 1 and the dental arch. [Explanation of Codes] 1 ... Mouthpiece for panoramic X-ray device 2 ... Front end 3 ... Concave groove 4 ... Positioning line 5 ... Vertical surface 6 ... Inclined surface 7 ... Upper jaw 8 ... Lower jaw 10a, 10b ... incisor 11a, 11b ... side incisor

Claims (2)

[Scope of utility model registration request] 1. A substantially rectangular parallelepiped mouthpiece having a width including at least a part of an incisor and a lateral incisor, and extending in a width direction along a curve similar to the shape of the anterior dental arch. A mouthpiece for a panoramic X-ray apparatus, wherein concave grooves are formed on the upper and lower surfaces so as to face each other in the thickness direction. 2. At least the upper surface of the mouthpiece,
The mouthpiece for a panoramic X-ray apparatus according to claim 1, wherein a positioning display portion is provided at the center position in the width direction.