JP2001178747A - Denture base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a denture with an excellent cushioning function. SOLUTION: A recess 3 is formed on the mucous membrane surface 2 of a denture base 1 except the surrounding rim 2A of the mucous membrane surface 2, and an elastic liner material 4 projecting from the surrounding rim is mounted on the recess. Therefore, the force applied to the denture is cushioned by the elastic liner material, and the denture is supported on the mucous membrane surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a denture base provided with an elastic lining material.

[0002]

2. Description of the Related Art Conventionally, restoration of stomatognathic function impaired by dentures has been performed for patients with tooth deficiency. Since the denture wearer has lost the periodontal ligament, which is a peripheral sensory organ, the sensory receptors, such as the subfloor mucous membrane, perform masticatory movements in compensation. For this reason, it is difficult for the denture wearer to adjust according to the properties of the food due to loss of periodontal sensation and decreased sensory perception of the subfloor mucosa, and it is easy to perform mechanical chewing movements, buffering effect due to food decreases, occlusal contact The impact and lateral force at the time increase, and the denture is likely to fluctuate greatly, with which the subfloor mucous membrane also moves. On the other hand, dentures are made of a hard material because it is necessary to form an occlusal surface that does not deform to maintain an artificial tooth. Thus, the hard denture sinks and moves in the oral cavity by receiving forces in various directions for the above-mentioned reason, and the submucosal mucosa also moves and is transmitted to the alveolar bone, resulting in stress and easy pain.
It is also known that the more aggressive pressure applied by such a hard denture base is applied to the alveolar bone, the more easily the alveolar bone is absorbed. In order to solve such a problem, an elastic lining material is provided so as to serve as a tissue similar to the mucosal periosteum and to substantially increase the thickness of the oral tissue, and the cushioning force of the elastic lining material is used. A denture has been proposed which supplements the buffering function of the lost periodontal ligament and subfloor mucosa, and is known in Japanese Patent Application Laid-Open No. 61-255,563 and the like.

[0003]

Since this type of conventional denture is configured so that the entire mucosal surface of the denture is covered with an elastic lining material, the elastic lining material is provided with sufficient cushioning. When made of soft material, the denture stability is poor and the elastic lining material is easily damaged and cannot withstand long-term use. Conversely, when the elastic lining material is made relatively hard, the cushioning effect is reduced. There was a problem that the cushioning property of the elastic lining material was reduced in a short time. Therefore, it is important for the inventor to pay attention to soft tissue in the stomatognathic tissue where the soft tissue supports the hard tissue, and it is essential for the denture wearer to have a denture base that can effectively assist the soft tissue submucosal submucosa. I came to an idea.

[0004] It is an object of the present invention to provide a denture base having an excellent subfloor mucosa assisting function in view of the above-mentioned circumstances.

[0005]

According to the present invention, there is provided a denture base in which a concave portion is provided on a mucosal surface of a denture base, leaving a peripheral portion thereof, and the concave portion is protruded from the peripheral portion. And an elastic lining material is provided.

[0006]

According to the above arrangement, the force applied to the denture base is buffered by the elastic lining material, and the denture base is supported by the denture mucous surface.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3 of the first embodiment, a concave portion 3 is provided on the mucosal surface 2 of the denture base 1 except for a peripheral portion 2A thereof, and the concave portion 3 is made to protrude from the peripheral portion 2A. The elastic lining material 4 is provided. As shown in FIGS. 4 to 6 of the second embodiment, a concave portion 3 is provided on the mucosal surface 2 of the denture base 1 except for a peripheral portion 2A and a central portion 2B, and the concave portion 3 has the peripheral portion. An elastic lining material 4 is provided so as to protrude from the center portion 2B. When a force is applied to the occlusal surface of the denture, this force is buffered by the elastic lining material 4,
The denture base 1 is stably supported on the oral mucosa 5 by the peripheral edge 2A of the mucosal surface 2 by compressing the elastic lining material 4 and placing it in the recess 3 as shown in FIGS. Further, since the periphery of the elastic lining material 4 is protected by the peripheral portion 2A of the mucous membrane surface 2, it is hard to be damaged and can withstand long-term use. Therefore, the elastic lining material 4 can be selected from a soft material having a sufficient cushioning property, and the practical use of the denture base that can effectively assist the submucosal mucosa is facilitated. The elastic lining material is well known, and the material thereof may be appropriately selected from those having appropriate elasticity. Further, as a method of providing an elastic lining material, a tape or a sheet is lining the concave portion 4 of the denture main body 2 by an appropriate means as disclosed in JP-A-4-76707 and JP-A-5-15459. JP-A-60-2246, JP-A-61-256553, JP-A-63-309251, JP-A-2-24
What manufactures the denture main body 2 so that it may become integral with the elastic lining material as disclosed in Japanese Patent No. 9541 may be appropriately selected. The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, the recess does not necessarily need to be provided leaving the entire periphery, and a part of the periphery may be left as long as the denture base can be supported. The denture base can be applied to various types.

[0008]

The present invention can provide a denture having a good cushioning function.

[0009]

[Brief description of the drawings]

FIG. 1 is a bottom view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1 showing the first embodiment of the present invention.

FIG. 3 is a sectional view showing a first embodiment of the present invention.

FIG. 4 is a plan view showing a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line BB of FIG. 4 showing a second embodiment of the present invention.

FIG. 6 is a sectional view showing a second embodiment of the present invention.

[Description of Signs] 1 Denture base 2 Mucosal surface 2A Peripheral edge 3 Recess 4 Elastic lining material

Claims (1)

[Claims] 1. A denture base characterized in that a denture is provided on the mucosal surface of the denture base, leaving a peripheral part thereof, and an elastic lining material is provided in the concave part so as to protrude from the peripheral part.