JP2002191623A - Dental retainer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental retainer for use in an oral cavity without covering an upper jaw or a lower jaw. SOLUTION: The dental retainer comprises a labial arch wire 104 making contact with the outer surfaces of teeth, and a palatal marginal resin floor 101 having a configuration that is mostly hollowed out while leaving behind only 4 to 5 mm of its portion from an outer margin having embedded therein a reinforcing wire having indentations that match the inner surfaces of the teeth, and also having a bridge between both side clasps. The reinforcing wire 102 extending from a labial C-clasp 100, a bridging wire 103 crossing the palatal rear edge, and the labial arch wire 104 extending near the tooth row dental neck are soldered together and embedded into the resin floor 101. The resin margin on the denture side has its resin thickness minimized by keeping its front tooth part within the dental neck and its molar part within a crown contour part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental retainer which is fitted to a tooth to fix the orthodontic tooth in an orthodontic state, and more particularly to a dental retainer which does not cover the upper or lower jaw in the oral cavity. About.

[0002]

2. Description of the Related Art A conventional dental retainer includes a wire of a labial line in contact with an outer surface of a tooth and a synthetic resin portion having irregularities adapted to an inner surface of the tooth. The tooth retainer is fitted to the tooth by inserting the tooth into the gap between the unevenness of the tooth, but in this case, the synthetic resin part located inside the tooth is It is necessary to have moderate flexibility. In the conventional dental retainer described above, the fixing force to the teeth (the "fixing force" refers to the force for fixing the teeth in a corrected state) by the synthetic resin portion having such flexibility. Because of this, the synthetic resin portion is inevitably enlarged, and is formed to be thick and wide. In particular, the synthetic resin part of the retainer for maxillary teeth covers almost the entire upper jaw (hard palate) in the oral cavity.
Since the conventional dental retainer has such a large synthetic resin portion, the following problem occurs. (1) There is a feeling of discomfort and the wearing feeling is poor. (2) A pronunciation disorder occurs. (3) It is difficult to eat things when eating, and the taste of food and drink is impaired. (4) Since the synthetic resin portion has low heat conductivity, the temperature of food and drink cannot be sensed sensitively. (5) The synthetic resin portion is unpleasant because it is easily smelled and easily stained. (6) The synthetic resin part is easily broken when it is large.

Since the dental retainer needs to be used for an extremely long period of time, these problems are serious for the user of the dental retainer. I have a suggestion.

That is, in FIGS.
1a is a retainer for upper teeth, and 21b is a retainer for lower teeth. The upper teeth retainer 21a has outer surfaces 5a, 5a,... Of the upper teeth 3a, 3a,.
Are connected to a substantially U-shaped metal support 27a located inside the upper teeth 3a, 3a,..., And the upper teeth 3 are attached to the metal support 27a.
a, 3a... conforming to the inner surfaces 7a, 7a.
a, 29a... are fixed, and the wire portion 23a and the irregularities 29a, 29a of the synthetic resin portion 31a are fixed.
are inserted in gaps 33a between the upper teeth 3a, 3a. On the other hand, the lower jaw retainer 21b is a substantially U-shaped metal having both ends 25b, 25b of the wire portion 23b in contact with the outer surfaces 5b, 5b... Of the lower jaw teeth 3b, 3b. Support part 2
7b, and the lower teeth 3b,
Irregularities 29b, 2 conforming to the inner surfaces 7b, 7b,.
Are fixed, and the lower teeth 3b, 3b,... Are inserted into gaps 33b between the wire portions 23b and the irregularities 29b, 29b,. Things.

[0005] The wire portions 23a and 23b are formed of, for example, a cobalt chrome alloy. Metal support 27
a and 27b are formed of, for example, titanium alloy, cobalt chrome alloy, PGA (platinum alloy) or the like. The synthetic resin portions 31a and 31b are formed of a material having appropriate flexibility such as polycarbonate and acrylic resin.

In the synthetic resin portion 31a of the upper jaw retainer 21a, metal first reinforcing members 35, 35 having one end 35 'fixed to a metal supporting portion 27a are embedded.

A second reinforcing member made of metal 37 whose one end 37 'is fixed to a metal supporting portion 27b is made to penetrate through the synthetic resin portion 31b of the lower jaw retainer 21b. The other end 37 '' of 37 protrudes from the synthetic resin portion 31b.

The synthetic resin portion 31a of the upper jaw retainer 21a is penetrated by metal third reinforcing members 39, 39 each having one end 39 'fixed to a metal supporting portion 27a. Synthetic resin part 31 in 39
The other end 39 ″ protruding from a is fixed to the wire portion 23 a.

Thus, in this dental retainer, both the synthetic resin portion and the substantially U-shaped metal support portion can be made extremely thin and narrow. Therefore, even when this is attached to the upper or lower teeth, the upper or lower jaw in the oral cavity is not covered by the dental retainer. Therefore, the following effects are exhibited. (1) There is no discomfort and the wearing feeling is good. (2) No pronunciation disorder occurs. (3) Food is easy to eat at the time of eating, and the taste of food and drink is not impaired. (4) Since the synthetic resin portion having low heat conductivity is extremely thin and narrow, the temperature of food and drink can be sensed sensitively. (5) The synthetic resin portion which is easily smelled and easily stained is extremely thin and narrow, so that it is clean. (6) Since the support is made of metal, it is strong. (7) Since the size of the synthetic resin portion is reduced, there is no possibility of cracking.

The first metal reinforcing member 35 reinforces the synthetic resin portion. Therefore, the synthetic resin portion becomes strong.

By locking the other end of the second metal reinforcing member 37 to the upper surface of the tooth, the dental retainer is more securely fixed to the tooth.

The metal third reinforcing member 39 allows the dental retainer to be more securely fixed to the teeth.
And

[0013]

However, the above-mentioned retainers have the following difficulties. (1) It states that "the synthetic resin portion and the substantially U-shaped metal support portion can be made extremely thin and narrow in width." The content is expensive titanium alloy, cobalt chrome alloy, PGA. (Platinum alloy) is fixed (supported) in such a manner that one end surface of a flat forged body such as (platinum alloy) is connected to an opposite surface having irregularities adapted to the inner surface of the jaw teeth of the synthetic resin part (FIGS.
7, 19).

[0014] The two members are simply bonded together (it is understood that the synthetic resin portion is backed up by a metal support portion).
With only this, the reinforcing effect on the synthetic resin portion (same for the metal supporting portion) is not so much expected (the metal reinforcing member 35 fixed to the metal supporting portion 27a is traversed and embedded. Although it is stated that the synthetic resin portion is reinforced, there is no such reinforcing relationship).

However, the material cost is high,
The degree of reduction of the synthetic resin is not great under irrational reinforcement. (2) The frequently attached and detached parts are replaced with arcuate wire loops along the teeth without the mounting base covering the palate, but simple plate-like arc-shaped loop frames are repeatedly lengthwise and widthwise. , A new problem arises in that it is extremely difficult to permanently withstand the twisting applied up and down,
There is no complement for such vulnerabilities.

The present invention has been made in view of the circumstances described above, and has as its object to use only standard low-cost materials and to make both the synthetic resin portion and the metal support portion effective. The amount of synthetic resin used can be reduced by reinforcing each other, and furthermore, a reinforcing frame is added to the above-mentioned plate-shaped arc-shaped loop frame to form a three-dimensional frame and has strength and elasticity to withstand repeated twisting To provide a dental retainer.

[0017]

In order to achieve the above object, a maxillary dental retainer according to the present invention comprises a wire of a labial line in contact with an outer surface of a tooth, and a concave and convex portion adapted to an inner surface of the tooth. It consists of a palate margin resin floor that is largely hollowed out, leaving 4-5 mm from the outer margin where the reinforcing wire with interclasp bridge is embedded, and is extended from the C-clasp on the labial side The reinforcing wire, the bridging wire that crosses the posterior margin of the palate, and the wire of the labial line along the vicinity of the dentition are brazed to each other, and embedded inside the predetermined marginal resin floor. The margin of the resin on the dentition side is such that the resin thickness is minimized with the anterior teeth extending to the tooth jaw and the molars extending to the crown prosperity.

Further, the lower jaw dental retainer of the present invention has a lip line contacting the outer surface of the tooth and a rim wire having a reinforcement wire embedded with irregularities adapted to the inner surface of the tooth. The reinforcing wire extending from the C-clasp on the labial side, the reinforcing wire extending along the vicinity of the dentition. The wires of the labial side are brazed to each other, and embedded in the predetermined marginal resin floor, and the resin margin on the dentition side is such that the anterior teeth part is the jaw part, and the molar part is the crown prosperity part. The resin thickness is minimized.

[0019]

[Effect] By embedding the wire in the resin, the rationality of reinforcing each other is exhibited, so that the amount of resin used is so-called cored and is greatly reduced. In addition, since the wire may be a low-cost standard product, it is advantageous in cost.

The tongue can be trained by touching the margin of the synthetic resin on the palate side with the tongue.

The presence of a resin bar (cross-clasp bridge) across the posterior edge of the palate prevents the sinker and torsion of the attached retainer and the reversal of the laterally enlarged case because it becomes a three-dimensional frame, and the attachment at the appropriate position indicated. It has a moderate restoring force even with external force due to repeated attachment and detachment. Repair and correction are also easy.

Further, there is an effect that the use condition of the patient can be recognized by the impression of the resin floor portion generated by the backup of the resin bar.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are shown in FIGS.
It will be described based on.

FIG. 1 shows the basic form of the maxillary dental retainer of the present invention in which the first molar is surrounded by a C-clasp 100.

The peripheral resin floor 101 of the palate, which has irregularities conforming to the inner surface of the tooth, is in the shape of an enclosed frame, and has a reinforcement extending from the C-clasp 100 along the inner surface of the tooth. A wire 102 is embedded, and further, a bridging wire 103 crossing the posterior edge of the palate (bracing between C clasps 100, 100) is embedded in the remaining sides.

The wire 104 along the vicinity of the dentition teeth is brazed to the C clasp 100.

In this example, the last molar is C-clasp 1
It may be surrounded by 00.

FIG. 2 shows the basic form of the lower dental retainer of the present invention in which the first molar is surrounded by a C-clasp 105.

The peripheral resin floor 106 of the palate, which has irregularities conforming to the inner surface of the tooth, is continuous in a U-shape, and the reinforcing resin wire 1 extending from the C-clasp 105
07 is embedded.

[0030] Wire 108 along the vicinity of the dentition teeth
Is brazed to the C clasp 105.

In this example, the last molar is C clasp 1
05.

Regarding the wire, since it is actually embedded in the resin floor, any portion may be brazed. The main line uses a 0.9 mm line, and the auxiliary bullet uses a 0.7 mm line.
In some cases, a main line of a 0 mm line is used.

FIG. 14 shows the correlation between the marginal resin floor 101, the front teeth and the molars of the reinforcing wires 102 and 104 in the upper jaw of the present invention. It shows the degree of amount reduction.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The upper dental retainer and the lower dental retainer of the present invention described above have many variations, respectively. First, for the upper jaw, there are the following.

FIG. 3 shows a form using an Adams clasp 109 for the first molar.

FIG. 4 shows a first molar and a last molar surrounded by a bifurcated C-clasp 110. Occlusion guidance of teeth during eruption is possible.

FIG. 5 shows a form in which a resin 111 is added to the wire 104 on the labial side of the front teeth. It is possible to overtreat individual teeth and it is aesthetically effective.

FIG. 6 shows a resin bed 10 crossing the front teeth and palate.
1 are provided with incisions 112 and 113 in the median part, the exposed reinforcing wire 102, and the omega loop 114 and 1 in the bridge 103.
15 is added. Not only can it be expanded or reduced laterally as it grows, but it can also be expanded or reduced after surgery.

FIG. 7 is a cutaway view of the reinforcing wire 102 of the front teeth and the resin floor 101 in FIG. Not only can it be expanded or reduced laterally as it grows, but it can also be expanded or reduced after surgery.

FIG. 8 shows a form in which an incision 112 is provided in the median portion of the resin bed 101 of the front tooth portion in FIG. 1 and an omega loop 114 is added to the exposed reinforcing wire 102 as a spot. This is a form to enhance awareness of the tongue position by the spot.

FIG. 9 shows that the resin is cut on the reinforcing wire 102 along the vicinity of the cervical region on the palatal side, and the auxiliary bullet 116,
116 is brazed. Occlusion guidance of individual teeth is possible.

Next, variations of the lower jaw dental retainer of the present invention will be introduced.

FIG. 10 shows an Adams clasp 1 on the first molar.
17 is used.

FIG. 11 shows a form in which the first molar and the last molar are surrounded by a bifurcated C-clasp 110.

FIG. 12 shows a form in which a resin 118 is added to the wire 108 on the lip side of the front teeth. It is possible to overtreat individual teeth and it is aesthetically effective.

FIG. 13 shows a configuration in which the lingual resin 106 of the front teeth portion shown in FIG. 2 is divided at the center, and an enlarged wire 119 extends along the lower part of the resin. Not only can it be expanded or reduced laterally as it grows, but it can also be expanded or reduced after surgery.

[0047]

Since the present invention is configured as described above, the cost can be significantly reduced by reducing the amount of resin used and adopting low-cost wires. In addition, the presence of the wire crossing the posterior margin of the palate can provide remarkable effects such as prevention of settlement and increase in strength.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a maxillary dental retainer of the present invention.

FIG. 2 is an explanatory view of a lower jaw dental retainer of the present invention.

FIG. 3 is a diagram illustrating a variation of the maxillary dental retainer of the present invention.

FIG. 4 is an explanatory view showing a variation of the maxillary dental retainer of the present invention.

FIG. 5 is an explanatory view of a variation of the maxillary dental retainer of the present invention.

FIG. 6 is an explanatory view showing a variation of the maxillary dental retainer of the present invention.

FIG. 7 is a diagram illustrating a variation of the maxillary dental retainer of the present invention.

FIG. 8 is an explanatory view of a variation of the maxillary dental retainer of the present invention.

FIG. 9 is a diagram illustrating a variation of the maxillary dental retainer of the present invention.

FIG. 10 is a variation explanatory view of the lower jaw dental retainer of the present invention.

FIG. 11 is a variation explanatory view of the lower jaw dental retainer of the present invention.

FIG. 12 is a view for explaining a variation of the lower jaw dental retainer of the present invention.

FIG. 13 is an explanatory view showing a variation of the lower jaw dental retainer of the present invention.

FIG. 14 is an explanatory diagram showing the correlation between the resin and the wire of the present invention.

FIG. 15 is an explanatory view of a conventional dental retainer.

16 is a sectional view taken along line II-II in FIG.

17 is a sectional view taken along line III-III in FIG.

FIG. 18 is an explanatory view showing a use state of the retainer.

FIG. 19 is a sectional view taken along line VV in FIG. 18;

[Explanation of symbols]

 3a; upper teeth 3b; lower teeth 5a; outer surfaces of upper teeth 5b; outer surfaces of lower teeth 7a; inner surfaces of upper teeth 7b; inner surfaces of lower teeth 21a; retainers for upper teeth 21b; retainers for lower teeth 23a; b; wire portion 25a, b; both ends of the wire portion 27a, b; metal support portion 29a, b; irregularities 31a, b; synthetic resin portion 33a, b; gap portion 35; metal first reinforcing member 35 '; One end 37 ″; the other end 39; the second metal reinforcement member 39 ′; one end 39 ″; the other end 100; C clasp 101; resin floor 102; reinforcing wire 103; Wire 104; wire 105; C clasp 106; resin floor 107; reinforcing wire 108; wire 109; Adams clasp 1 0; bifurcated C clasp 111; Resin 112, 113; incisions 114, 115; omega loop 116; auxiliary elastic-line 117; Adams clasp 118; Resin 119; larger wire

Claims (12)

[Claims] 1. A wire of the labial line in contact with the outer surface of the tooth, and only 4-5 mm from the outer edge where the reinforcing wire with irregularities conforming to the inner surface of the tooth and bridging between both clasps is embedded. The reinforcement wire extending from the C-clasp on the labial side, the bridging wire crossing the posterior edge of the palate, and the vicinity of the dentition teeth. The wires of the labial side are brazed to each other and embedded in a predetermined resin bed of the margin, and the resin margin on the dentition side has a front jaw portion at a jaw portion and a molar portion at a crown. A dental retainer for upper jaws characterized by minimizing the resin thickness up to the ridge. 2. A large part of the labial wire, which is in contact with the outer surface of the tooth, and 4 to 5 mm from the outer edge of the wire in which the reinforcing wire having irregularities adapted to the inner surface of the tooth is embedded. A palate margin resin floor in a hollow shape, the reinforcing wire extending from the C-clasp on the labial side, and the wire on the labial side along the vicinity of the dentition jaw are brazed to each other, In addition, the resin is embedded inside the predetermined resin bed, and the resin margin on the dentition side is such that the front teeth are the tooth jaw and the posterior teeth are the crown prosperity to minimize the resin thickness. Dental retainer for lower jaw. 3. The retainer for an upper jaw according to claim 1, wherein the first molar is surrounded by a C clasp. 4. The dental retainer for an upper jaw according to claim 1, wherein the first molar is made of an Adams clasp. 5. The retainer for an upper jaw according to claim 1, wherein the first molar and the last molar are surrounded by a bifurcated C clasp. 6. The dental retainer for an upper jaw according to claim 1, wherein a resin is added to the wire on the lip side of the front teeth. 7. The dental retainer for an upper jaw according to claim 1, wherein an incision is made in the median portion of the resin bed crossing the anterior teeth and palate, and an omega loop is added to the wire. 8. The dental retainer for an upper jaw according to claim 1, wherein a resin is cut and a supplementary trajectory is added to the wire along the palatal side neck portion. 9. The dental retainer for a lower jaw according to claim 2, wherein the first molar is formed using an Adams clasp. 10. The lower dental retainer according to claim 2, wherein the first molar and the last molar are surrounded by a bifurcated C-clasp. 11. The lower dental retainer according to claim 2, wherein a resin is added to the wire on the lip side of the front teeth. 12. The lower jaw dental retainer according to claim 2, wherein the anterior tooth lingual side resin is divided at the center, and an enlarged wire extends along the lower part of the resin.