JP2599686B2 - Tooth retaining device and positioner used in the device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retention device and a positioner for holding a tooth and a jaw moved in an orthodontic state by orthodontic treatment in dentistry, and more particularly, to orthodontic treatment for anterior open bite. Suitable for later holding,
It relates to a retaining device and a positioner.

[0002]

2. Description of the Related Art In dental treatment, when performing orthodontic treatment of a tooth alignment, a patient is provided with a device for correcting the tooth alignment, and is left as it is for a while. The period varies depending on the degree and condition of the correction, but is usually about one to three years. In the meantime, the periodontal ligament on the side pressed by the tooth pressed by the instrument causes blood circulation disorder and retreats, while the periodontal ligament on the side not pressed by the tooth has a gap formed between the tooth and the tooth. In addition, since the bone component grows and fills the gap, as a result, the tooth moves and the alignment of the teeth is corrected.

[0003] Such an orthodontic appliance includes, for example, a ring-shaped metal (nickel-titanium alloy or the like) formed by bonding a bracket to each tooth in advance.
Alternatively, a U-shaped device may be held by being pressed into a groove provided in the bracket.
After treating in this way, the correction device will be removed, but if you leave it as it is,
The straightened tooth arrangement is disturbed again.

[0004] For this reason, a positioner is mounted at bedtime or the like in order to maintain the state of the correction even after the correction device is removed. The positioner is generally a mouthpiece made of a soft polymer material (such as vinyl acetate). After inserting it between the upper and lower teeth, the positioner is inserted into the upper and lower teeth. Are used in such a manner as to engage with each other. In the positioner, the tooth shapes of the upper and lower teeth after correction are engraved,
It suppresses the force of the tooth arrangement to return to the original state, and maintains the tooth arrangement in a normal position after correction.

[0005]

The above-mentioned conventional retaining means after the alignment of the teeth is highly effective as described above. Although it has the effect of preventing the tooth from shifting in the direction perpendicular to the axial direction (direction perpendicular to the axial direction), the effect in the vertical direction (axial direction of the tooth) is not always satisfactory.

[0006] In other words, of the vertical displacement, for the retention after performing the correction to press the tooth to the root side, the retention effect can be expected by biting the retaining means described above. There is no expectation of a retaining effect after performing corrections that are drawn from the side. Rather, when the conventional retaining means is attached, a force in the opposite direction to the correction that presses the tooth to the root side acts, which is rather inconvenient, and the action that keeps the tooth pulled out from the root side after that. I can not hope for.

[0007] In recent years, a symptom called an open bite, in which the back teeth are meshed with each other but the front teeth are opened without meshing, is increasing. There is a problem that the conventional retaining means cannot be expected to be effective for the above-mentioned reason for the retention of the open bite after the correction. The present invention has been made in view of the above-described conventional problems, and has as its object to provide a retaining device and a positioner capable of expecting a retaining effect after performing a correction such that a tooth is pulled out from a root side in addition to the conventional retaining effect. And

According to the present invention, the above-mentioned problems are solved by the means described in the claims. The invention according to claim 1 is an apparatus used for retaining a tooth after straightening the teeth, comprising a protruding member provided on upper and lower teeth, and a positioner having a concave portion fitted with the protruding member. Is a tooth retention device characterized by maintaining teeth in the extension direction.

According to a second aspect of the present invention, there is provided a positioner used for retaining teeth after the alignment of teeth, which has a concave portion to be fitted with a protruding member provided on upper and lower teeth, and retains the teeth in the extension direction. The invention of claim 3 is a positioner that
This is a positioner that forms a gap between the tooth and the tooth when the positioner is attached to a portion of the position from the concave portion of the positioner into which the protruding member adhered to the tooth fits to the tip of the tooth.

According to a fourth aspect of the present invention, there is provided a positioner having, when the positioner is mounted, at least a part of the part of the positioner which is in contact with the outside of the teeth, a part having higher rigidity than other parts. According to a fifth aspect of the present invention, in the retaining device of the above invention, a light-curing resin is used as the protruding member to be adhered to the tooth.

[0011]

According to the present invention, since the protrusion is adhered to the tooth and the alignment of the teeth is maintained by using a positioner having a recess for fitting the protrusion, the protrusion is fitted to the recess of the positioner. In addition, since the movement of the tooth in the vertical direction as well as in the horizontal direction can be suppressed, the tooth corrected so as to protrude from the root can be securely held.

In a positioner in which a gap is formed between a tooth and a tooth when the positioner is mounted on a portion of the position from the concave portion of the positioner into which the protruding member adhered to the tooth is fitted to the tip of the tooth. When the positioner is mounted, the positioner has a gap capable of absorbing the force pressing the tooth toward the root of the tooth, so when mounting the positioner, the force pressing the tooth against the root of the root after mounting is also increased. Work can be reduced. Therefore, the tooth can be suitably held at a desired position.

When the positioner is mounted, at least a part of the portion of the positioner that contacts the outside of the tooth,
In a positioner having a portion having higher rigidity than other portions, the member having the higher rigidity can prevent the projecting member from warping from the concave portion of the positioner, so that the effect of the retaining device of the present invention can be further improved. Can be enhanced.

[0014] In the case of using a photopolymerizable resin as the protruding member to be bonded to the back side of the tooth, the protruding member can be easily and quickly bonded.

When a light-curing resin is used as the projecting member to be adhered to the back side of the tooth, the light-transmitting resin has an inside shape and dimension substantially equal to the outside shape and size of the projecting member. A jig having a head made of a material that is unlikely to cause a photopolymerization reaction with a shaped member, put a light-curable resin in the concave side of the head of the jig, and apply this to a corresponding position on the back side of the tooth. By projecting light, the projections can be easily bonded to each other, so that an accurate treatment can be performed very quickly.

[0016]

1 is a view showing a positioner according to an embodiment of the present invention, in which (a) is a perspective view, (b) is a side view,
(C) is a top view. In the figure, reference numeral 1 denotes a positioner, 2 denotes a recess into which a tooth fits, and 3 denotes a recess into which a protruding member adhered to the tooth side fits. When the present positioner is actually mounted, the concave portion 2 is fitted with each tooth, while the concave portion 3 is fitted with a protruding member adhered to the tooth side.

FIG. 2 is a view showing a state in which the positioner of the present invention is actually mounted. Numeral 1 indicates a positioner, which is shown as a sectional view in this figure. Also, 2
Is a concave portion in which the tooth is fitted, 3 is a concave portion in which the protruding member adhered to the tooth side is fitted, 4 is a maxillary tooth, a cross section of the upper gum,
Reference numeral 6 denotes a lower tooth, 7 denotes a cross section of the lower gum, and 8 denotes a protruding member. In FIG. 1, the positioner 1 holds the upper teeth 4 and the lower teeth 6 so as not to shift in the horizontal direction indicated by the alphabetical characters A or B.

Further, the protruding member 8 adhered to the maxillary teeth 4 and the concave portion 3 of the positioner 1 are fitted, while the positioner 1 and the gums of the upper jaw are in close contact with each other, so that the upper teeth 4 are written in alphabetical characters. The upper teeth 4 so as not to shift in the direction indicated by C
Hold. In the case of the lower jaw 6, the same operation is performed so that the lower jaw does not shift in the direction indicated by the letter D.

FIG. 3 is a view showing another embodiment of the present invention. Numerals 1 to 8 are the same as those in FIG. 1, 9 is a gap between a positioner and upper or lower teeth, and 10 is a positioner. Of the hard material. In the present embodiment, since the gap 9 is provided in the positioner 1, when the positioner 1 is mounted, the force of the positioner 1 pressing the upper or lower jaw teeth toward the root can be reduced. On the other hand, since the portion 10 made of a hard material is provided, the upper teeth and the lower teeth are held horizontally by the protrusions 8 and the protruding members 8.

In addition, as in the previous embodiment, the protruding member 8 adhered to the maxillary teeth 4 and the concave portion 3 of the positioner 1 are fitted, while the positioner 1 and the gums of the upper jaw are in close contact, so that the upper jaw The tooth 4 is held so as not to move in the direction of the root. In the case of the mandibular teeth 6, the same operation is performed so that the mandibular teeth do not shift in the direction of the root.

FIG. 4 is a view for explaining the mounting of the protruding member, and numerals 11-1 to 11-12 show the state of the maxillary dentition viewed from the occlusal surface, respectively.
A state in which the protruding member 8 is adhered to six front teeth (11-4 to 11-9) among them is shown.

FIG. 5 is a view for explaining a method of forming a projecting member using a light-curing resin.
(A) is a perspective view of a jig used for bonding the protruding member to a tooth, (b) is a side view of the jig, and (c) uses the jig to form a protruding member on lower jaw teeth. It shows the situation. Numeral 12 is a jig used for bonding the protruding member to the teeth, 13 is the head of the jig, 14
Denotes a recess in the head of the jig, 15 denotes a handle of the jig, and 16 denotes a protruding member of a light-curing resin. Other numerals are the same as those in the previously described figures.

In FIG. 1, the jig 12 has at least a transparent head 13 and may be made of any material that does not fuse with the protruding member due to a photopolymerization reaction. It is one of the things. It goes without saying that not only the head but also the handle 15 may be made of the same material.

In order to use this, the raw material of the photocurable resin is put into the concave portion 14 of the head 13 of the jig 12, and the raw material is applied to an appropriate position on the back surface of the tooth as shown in FIG. And then remove the jig 12. According to this method, the protruding member can be very easily and quickly bonded. Usually the diameter of the protruding member is 2-3
The position of the projection member 8 may be any position as shown in FIG. 4 or FIG. 5 (c). It is necessary to make the dimensions indicated by the alphabetical letter E in 5 (c) appropriate. Normally, this value should be about 1-2 mm.

[0025]

As described above, according to the retaining means of the present invention, not only the conventional retention of teeth in the horizontal direction, but also the vertical retention of teeth such as anterior open bite, for which there has been no effective means in the past. There is an advantage that the retention after the correction treatment for the direction deviation can be reliably performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a positioner according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a retaining device according to an embodiment of the present invention is mounted.

FIG. 3 is a diagram illustrating another embodiment of the present invention.

FIG. 4 is a view for explaining attachment of a projection-like member of the retaining device of the present invention.

FIG. 5 is a diagram illustrating a method for forming a protruding member using a photopolymerizable resin.

[Description of Signs] 1 Positioner 2 Recess for fitting teeth 3 Recess for fitting protrusions 4 Upper jaw 5 Cross section of upper gum 6 Lower jaw 7 Cross section of lower gum 8 Projection member 9 Gap 10 Hard material Part 11-1 to 11-12 Occlusal surface diagram of maxillary dentition 12 Jig 13 Jig head 14 Jig head recess 15 Jig handle 16 Projection member of light curable resin

Claims (5)

(57) [Claims] An apparatus for retaining teeth after straightening the teeth, comprising a protruding member provided on upper and lower teeth, and a positioner having a concave portion fitted with the protruding member, wherein the positioner is a tooth. A tooth retention device characterized in that the tooth is maintained in the extension direction. 2. A positioner which is used for retaining teeth after straightening the teeth, wherein the positioner has a concave portion to be fitted with a protruding member provided on upper and lower teeth and retains the teeth in a protruding direction. 3. The positioner according to claim 2, wherein a gap is formed between the tooth and the tooth when the positioner is attached to a portion of the position from the concave portion of the positioner to which the protruding member adhered to the tooth fits to the tip of the tooth. 4. The positioner according to claim 2, wherein, when the positioner is mounted, at least a part of the part of the positioner that contacts the outside of the tooth has a part that is higher in rigidity than other parts. 5. The retaining device according to claim 1, wherein the material forming the protruding member is a light-cured resin.