WO2024082505A1

WO2024082505A1 - Mechanically retained full-mouth suction denture apparatus

Info

Publication number: WO2024082505A1
Application number: PCT/CN2023/078044
Authority: WO
Inventors: 张文龙
Original assignee: 张文龙
Priority date: 2022-10-19
Filing date: 2023-02-24
Publication date: 2024-04-25
Also published as: CN115581533A

Abstract

A mechanically retained full-mouth suction denture apparatus, comprising a maxillary base support (1), a mandibular base support (2), and maxillary teeth and mandibular teeth, which are fixedly connected to the maxillary base support (1) and the mandibular base support (2), respectively. An occlusion force point formed by teeth of the mandibular anterior segment is located at an inner side of a maxillary anterior segment tooth crest line (6), and the reverse acting force of the occlusion point acts on the inner side of the mandibular anterior segment tooth crest line (7), forming an upper fitting angle ∠1 greater than 90 degrees on the jaw plane (C) and forming a lower fitting angle ∠2 less than or equal to 90 degrees, and the upper cutting segment edge being a predetermined interval from the lower cutting segment edge, so that functional motion of the mandibular teeth is limited within a preset range of the maxillary teeth, and a mouth and jaw system capable of converting occlusion force into a base support retention force is achieved using a lever effect of the teeth, the base supports and the alveolar crest.

Description

A mechanically retained full-mouth suction denture device

Technical Field

The invention relates to the technical field of full-mouth dentures, and in particular to a full-mouth adsorption denture device with mechanical retention.

Background technique

The retention concept of traditional full-mouth suction dentures in the prior art is mainly to create a negative pressure cavity by sealing the functional edge of the base and use the alveolar ridge as the main pressure-bearing surface to achieve its retention function. Since the edge of the base extends relatively large and is tightly sealed, the tissues around the alveolar ridge are subjected to certain compression and restriction. The patient has a strong sense of foreign body and restraint in the mouth, stiff face, dry lips and tongue, unclear pronunciation, etc. In addition, the artificial teeth and dentition structure of traditional full-mouth suction dentures are bionic, and the dentures are always consuming retention force in the process of implementing their functions, causing the denture base to warp or concealedly warp on the alveolar ridge tissue surface, which often causes contusion and ulceration of the alveolar ridge tissue surface. Most patients do not like to wear them all day, which causes their alveolar ridge to atrophy, the base to loosen, and their functions to be limited, and they cannot provide patients with comprehensive functional needs.

Therefore, a device capable of solving the above problems needs to be proposed.

Summary of the invention

In response to the problems existing in the background technology, the present invention proposes a device for strengthening the retention of a denture base by utilizing the principle of a lever. The device improves the artificial abutment teeth and dentition of traditional full-mouth adsorption dentures and performs a set jaw relationship reconstruction to limit the functional movement of the mandibular dentition within a predetermined range of the maxillary dentition, so that the denture can automatically strengthen its retention when there is occlusion. When the jaw is in the rest position, the denture base is naturally attached to the patient's mouth through the underlying surface mucosa and saliva, without a sense of foreign matter or restraint, and is comfortable to wear. It is suitable for patients to wear all day long, has good practicality, can effectively solve the problems existing in the background technology, and the device is low-cost.

The technical solution provided by the present invention is:

A mechanically retained full-mouth suction denture device comprises a maxillary base, a mandibular base, and maxillary dentition and mandibular dentition respectively fixed thereto. The dentition may be arranged by a single abutment, or may be an arrangement of multiple abutments combined and segmented and preformed, or a whole-segment preformed dentition. For the convenience of illustrating and describing the present invention, this embodiment will take a three-segment preformed dentition, i.e., anterior incisor segment and left and right molar segments, as an example to explain the basic principle, main features and advantages of the present invention.

The mechanically retained full-mouth adsorption denture device comprises a maxillary dentition and a mandibular dentition. The maxillary dentition is provided with an upper anterior incisor and upper left and right molar segments, the upper anterior incisor is composed of upper incisors and upper left and right canines, and the lingual crown surfaces of the upper incisor abutment teeth all form a predetermined incisional surface. The mandibular dentition is provided with a lower incisor and lower left and right molar segments. The lower incisor dentition is composed of lower incisors and lower left and right canines. The incisal edge of the mandibular anterior incisor acts on the inner side of the maxillary anterior incisor ridge line, and its reverse force acts on the inner side of the mandibular anterior incisor ridge line, and forms an upper incisional angle greater than 90 degrees and a lower incisional angle less than or equal to 90 degrees with the upper and lower alveolar ridge lines as fulcrums. The jaw surfaces of the upper and lower molar segments are low-pointed or flat-topped jaw surfaces, and the flat-topped jaw surfaces can be arranged in a Y-shaped V-groove. The transverse jaw surfaces of the upper and lower molar segments form a predetermined angle with the jaw plane.

Preferably, the lingual crown surface of the artificial tooth in the maxillary anterior cutting segment is a cutting path surface with a predetermined slope.

Preferably, the artificial tooth maxillary surface of the molar segment is provided with a low-pointed or flat-topped overflow groove, and the transverse maxillary surfaces of the upper and lower molars form a predetermined upward inclination angle with the jaw plane.

Preferably, the occlusal point of the cutting edge of the mandibular anterior cutting segment is located inside the ridge line of the maxillary anterior cutting segment, and the reverse force is located inside the ridge line of the mandibular anterior cutting segment and forms an upper occlusal angle greater than 90 degrees and a lower occlusal angle less than or equal to 90 degrees with the jaw plane.

Preferably, the mechanically retained full-mouth suction denture device has upper and lower jaw dentitions that form a semi-enclosed locking structure on the occlusal surface, and the cutting edge of the lower cutting segment is spaced a predetermined distance from the cutting edge of the upper cutting segment on the jaw plane.

Beneficial Effects

The advantages of the present invention compared with the prior art are:

The mechanically retained full-mouth adsorption denture device proposed by the present invention has a smaller edge extension of the upper and lower jaw bases and a larger effective base surface (all pressure-bearing surfaces except the labial vestibule are the base surface), which fundamentally solves the problem of the fragility of the pressure-bearing base surface of the traditional full-mouth adsorption denture, strengthens the functionality of the denture, and the base edge does not emphasize the functional edge closure, without the sense of negative pressure restraint. The base edge extension is smaller, which can more effectively avoid various frenulums, glands, periodontal muscles and sensitive areas, and improves the comfort. When the jaw is in the resting position, the upper and lower jaw bases can be easily and naturally attached to the patient's mouth through the mucosa and saliva, without a sense of foreign body and restraint, and in the process of the denture implementing the function, as the tension between the base and the base surface changes, the denture base will automatically strengthen the retention force or automatically weaken the retention force. It has strong functionality and high comfort, and is suitable for patients to wear for a long time around the clock. In particular, the alveolar ridge and the base arch cavity can be in a long-term match and the biological stress generated by the implementation of the function will make the denture base retention more and more stable, so that the patient can enjoy it for life without loosening. This device successfully avoids the vicious cycle of traditional full-mouth suction dentures, which are tight and uncomfortable in the early stage, and loose and cannot effectively perform their functions in the later stage. It is an innovation of traditional full-mouth suction dentures.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the longitudinal section of the front cutting segment in an embodiment of the present invention;

FIG2 is a schematic diagram of a mandibular base according to an embodiment of the present invention (the shaded portion is the base surface);

3 is a schematic diagram of a maxillary base in an embodiment of the present invention (the shaded portion is the base surface);

FIG4 is a schematic diagram of the retention principle of the anterior cutting segment according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the molar maxillofacial surface;

Fig. 6 is a schematic diagram of the top surface of a molar;

In the figure: A is the mandibular incision point, A' is the maxillary ridge line fulcrum, B is the lower incision recoil force point, B' is the mandibular ridge line fulcrum, C is the jaw plane, angle 1 is the upper incision angle, angle 2 is the lower incision angle, 1 is the maxillary base, 2 is the mandibular base, 6 is the maxillary ridge line, 7 is the mandibular ridge line, 5 is the maxillary base base surface, 4 is the mandibular base base surface, the one-way arrow is the base retention force, and the two-way arrow is the occlusal force. H is the upper molar, D is the lower molar, a1a2 is the lower incisal edge line, b1b2 is the lower incisal edge recoil force line, and c1c2 is the upper incisal edge line.

具体实施方式Detailed ways

The present invention is further described in detail below with reference to Figures 1-6.

The present invention proposes a technical solution for strengthening the retention force of dentures by utilizing the occlusal force.

The mechanically-retained full-mouth adsorption denture device comprises a maxillary base 1 and a mandibular base 2, and maxillary dentition and mandibular dentition respectively fixed thereto, wherein the maxillary dentition comprises an upper anterior incisor segment and an upper molar segment, and the mandibular dentition comprises a lower anterior incisor segment and a lower molar segment. In the implementation of the technology, the artificial teeth and the base work together as a whole, and when the artificial teeth are arranged, the predetermined space occupied by the upper and lower artificial teeth is utilized to decompose the bite force AB through the maxillary base 1 and the mandibular base 2 and respectively with the upper dental ridge line 6 and the lower dental ridge line 7 as fulcrums, and decompose the bite force AB to the maxillary body base surface 5 and the mandibular body base surface 6, so that the maxillary base 1 generates an upward forward retention force, and the mandibular base 2 generates a downward forward retention force, thereby strengthening the retention force of the base between the upper and lower jaws, and completing its main function of mechanical retention. The molar segment can generate retention force in the central jaw area through the occlusal static force and the leverage effect of its occlusal inclined surface. At the distal end of chewing, the leverage effect of the occlusal inclined surface of the molar segment can also be used to transfer the maxillary retention force to the mandible, so that the retention force of the upper and lower mandibular bases can be balanced to achieve a certain degree of retention stability of the full denture.

Based on the prior art, the present invention does not emphasize the closure of the functional edge of the base, and does not rely on the retention of the negative pressure cavity. Therefore, the denture base in the present invention is of moderate size and can better avoid various frenulums and sensitive areas. The jaw stop without the feeling of negative pressure restraint makes the wearer feel comfortable. In addition, the device increases the effective base surface of the upper and lower jaw bases, fundamentally solving the problem of the fragility of the base surface of traditional full-mouth adsorption dentures and enhancing the functionality of the dentures. It is suitable for patients to wear it for a long time around the clock. At the same time, due to the biological stress generated by the long-term anastomosis of the alveolar ridge with the base arch cavity, the base retention will become tighter and tighter, and the functionality will become stronger and stronger, which is suitable for patients to enjoy for a lifetime.

The present invention effectively solves the problems of discomfort during use of dentures in the prior art, easy atrophy of the alveolar ridge, easy contusion and ulceration of the alveolar ridge tissue surface, fatigue after wearing, dry mouth, stiff face, unclear pronunciation, easy loosening and dislocation in the later stage, and poor functionality. It successfully avoids the vicious cycle of traditional full-mouth suction dentures that are tight and uncomfortable in the early stage and loose and unable to perform functions in the later stage.

The above describes the basic principle and main features of the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should fall within the protection scope of the present invention.

Claims

A mechanically retained full-mouth suction denture device, characterized in that the occlusal force point formed by the cutting edge of the lower cutting segment is located on the inner side of the maxillary anterior cutting segment ridge line, and its reverse force is located on the inner side of the mandibular anterior cutting segment ridge line, and a lower incisional angle less than or equal to 90 degrees and an upper incisional angle greater than 90 degrees are formed on the jaw plane.
According to the mechanically retained full-mouth suction denture device of claim 1, it is characterized in that the lingual crown surfaces of the artificial teeth of the maxillary anterior cutting segment all form predetermined cutting surface.
According to the mechanically retained full-mouth suction denture device of claim 1, it is characterized in that the jaw surfaces of the upper molar segment and the lower molar segment are both provided with low-pointed or flat-topped overflow grooves, and the transverse occlusal surface of the molar forms a predetermined angle with the jaw plane.
A mechanically retained full-mouth suction denture device according to any one of claims 1 to 3, characterized in that the maxillary dentition and the mandibular dentition form a semi-enclosed locking structure on the occlusal surface with the upper and lower inward portions, and a predetermined gap is formed between the lower cutting edge and the upper cutting edge.