KR20040083047A - Dental Impression Trays - Google Patents

Abstract

PURPOSE: A tray for dental impressions is provided to regulate the width of the tray irrespectively of an arch size, to stabilize the adjusted position on obtaining the impressions, to make the disposal, and thus hygienic usage of the tray possible by manufacturing it with low-priced synthetic resin, and to perform the implant operation. CONSTITUTION: The tray for dental impressions includes; a pair of grips(1); a receiving part(2), having a U-type cross section and receiving an impression material; a hinge(3), arranged between the grips(1) and the receiving part(2) so as to regulate the right and left width of the receiving part(2) which is divided into the right and the left, and thus to obtain the impressions of arch; wherein one grip(1') of the grips(1) is made out of synthetic resin and comprises a long hole(1a) with a screw pitch, and the other grip(1") thereof is also made out of synthetic resin and has an extension(1b) with a connecting projection(1c), so that the connecting projection(1c) can be coupled with the long hole(1a) so as to connect the grips(1',1") with each other in a fixed manner.

Description

Dental Impression Trays {Dental Impression Trays}

The present invention relates to a dental impression tray, and more particularly, to a dental impression tray which can adjust the width of the tray irrespective of the size of the arch, so that the adjusted position is stabilized when the impression is taken.

As is well known, the dental impression tray is used to obtain an impression by using an impression material when making a model by duplicating a shape in the oral cavity for diagnosis and treatment when there is a defect or damage of a tooth.

In order to obtain the impression, the impression should be taken by appropriately selecting the arch of the horseshoe type formed by teeth and alveolar bone.

Conventionally, since the size of the arch is different depending on the patient, impressions were obtained using a ready-made dental tray consisting of one set of four upper jaw (small, medium, large, and super large) and three lower jaw (small, medium, large).

In this case, in order to float the patient's teeth beyond the size of the dental ready-made tray, there was an inconvenience in that the size of the tray was arbitrarily opened or retracted and then the size of the tray was opened.

In order to solve this problem, the impression of the tray by arbitrarily adjusting the width of the tray using a dental impression tray to obtain the impression was registered Korean Utility Model Publication No. 220285 (name of the invention: variable dental impression tray) This is illustrated in FIG. 1.

As shown, the variable dental impression tray is curved in the form of an arch, the hinge plate 101 is extended and attached to the center is formed and divided into a U-shaped cross section for accommodating the impression material and fastened on the hinge plate 101. The member 102 is provided with upper and lower trays 103 and 104 which can be deformed according to the size of the arch. The trays 103 and 104 are rotated by the hinge plate 101 to adjust the widths of the trays 103 and 104. .

In this case, since the trays 103 and 104 are rotated by the hinge plate 101 during the pulling of the impression, the adjusted positions of the trays 103 and 104 are frequently changed. In addition, it is necessary to readjust the frequently changing positions of the trays 103 and 104, and if the result of the impression acquisition is not correct, it is necessary to re-open the chip, which is a problem that takes a lot of time and money.

In addition, the conventional dental impression tray is made of a metal tray, the mechanical strength is good, but there is an economic burden of securing a large number of metal trays according to the size of the small and medium, and the time required for disinfection and sterilization for repeated use. This is long because most of the liver is used only to disinfect, there was an unsanitary problem. In addition, in order to find a tray that is suitable for a patient, in some cases, it is necessary to fit three trays from one jaw, that is, six trays from both the upper and lower jaws, so that the size of the arch of a patient can be confirmed even if it is disinfected. Since several trays are in contact with saliva during the process, the following patients have a problem of taking an impression in an unsanitary state.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to adjust the width of the tray irrespective of the size of the arch, as well as to adjust the position at the time of pulling It is to provide a dental impression tray to be stabilized.

In addition, another object of the present invention is to provide a dental impression tray that can be made hygienic by using disposable disposable by making a low-cost synthetic resin material, and also having an implant ball.

1 is a perspective view showing a dental impression tray used in the prior art.

Figure 2 is a perspective view showing a tray for dental impressions according to the present invention.

Figure 3 is an exploded perspective view showing a tray for dental impressions according to the present invention.

Figure 4 is a perspective view showing a state in which the implant hole is expanded.

5 is a cross-sectional view taken along line AA ′ of FIG. 2.

Figure 6 is a perspective view showing a tray for dental impressions in accordance with a preferred embodiment of the present invention.

7a and 7b is a perspective view showing the operating state of the tray for dental impressions according to the present invention.

8 is a perspective view showing a tray for dental impressions applied to the mandible.

Figure 9 is an exploded perspective view showing the extension structure in an embodiment of the impression tray for patients with large arch.

10 is a perspective view showing a state in which the expansion unit is coupled.

11 is a perspective view showing another embodiment of the impression tray.

** Description of the symbols for the main parts of the drawings **

1: handle 1a: long hole

1b: extension 1c: engaging projection

2: impression material container 2a: impression material holder

2b: implant ball 2c: incision

2d: hole 2e: coupling part

2f: projection 2g: projection

2h ', 2h ": mating hole 3: hinge part

4: extension 4a ', 4b ": protrusion

4b: perforation

According to a feature of the present invention for achieving the object as described above, the left and right sides provided with a handle portion, an impression material receiving portion molded into a U-shaped cross section to receive the impression material, and a hinge portion between the handle portion and the impression material receiving portion. In the well-known thing to obtain the impression of the arch by adjusting the left and right width of the impression material receiving portion divided into, the long hole formed with a screw pitch on one handle portion, and the other side extending from the handle portion is coupled to the long hole to fix the handle portion to each other Characterized in that consisting of an extension formed with a coupling protrusion.

In addition, the present invention is characterized in that the coupling portion consists of a coupling portion extending from the inside of the impression material receiving portion is coupled to cross each other up and down.

Hereinafter, a dental impression tray according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing a dental impression tray according to the present invention, Figure 3 is an exploded perspective view showing a dental impression tray according to the present invention.

As shown, the dental impression tray 10 according to the present invention, the handle portion 1, the impression material receiving portion (2) for receiving the impression material, and the impression material receiving portion ( It consists of the hinge part 3 which rotates 2).

The handle portion 1 is formed integrally with the impression material container 2, which is divided into two, and is rotated by the hinge portion 3 to widen or narrow the width (W) of the impression material container (2). To play a role. A long hole 1a having a threaded pitch is formed at one handle 1 ', and an extended part 1b is formed at the other handle 1 ", and the long hole 1a is formed at one side of the extended part 1b. Coupling protrusion (1c) is coupled to the handle portion (1 ', 1 ") is fixed to each other is formed. The engaging projection 1c engages with the long hole 1a in which the screw pitch is formed, and serves to stabilize the adjusted position of the impression material accommodating part 2.

Particularly, in the present invention, the material is made of synthetic resin, and the handle portion 1 'is rotated by rotating the handle portions 1' and 1 "by changing the position at which the coupling protrusion 1c is engaged in the long hole 1a. , 1 ") and the width (W) of the impression material receiving portion (2) formed integrally with each other can be adjusted to correspond to the arch of a different size for each patient, of course, since their materials are synthetic resin, As the engaging projection 1c is forcibly pressed into the screw pitch of the long hole 1a smaller than its standard, it is stably and firmly coupled, so that the adjusted position of the impression tray 10 does not change during the impression taking, so that the correct teeth are displayed. To make it possible.

In addition, by using the impression tray 10 of the present invention made of a synthetic resin material inexpensive and disposable, it can be used sanitarily unlike the metal tray repeatedly used as in the prior art.

The impression material accommodating part 2 is formed into a U-shaped cross section and serves to receive an impression material made of alginate, silicon, etc., which floats a toothbone, and is divided into two sides. The impression material holding hole (2a) for holding the impression material is formed on the side of the impression material receiving portion (2). The impression material holding hole 2a is tapered in a trapezoidal shape with a narrow upper portion and a wider lower portion. A plurality of implant holes 2b are formed in the lower surface of the impression material accommodating part 2. This implant ball (2b) is used as it is when used in the patient with the teeth to play the same role as the impression material retaining hole (2a), when used in the dental caries patient formed on the outside of the implant ball (2b) as shown in Pressing the incision 2c to enlarge it to form a huge hole (2d) and the fixture mount (Fixture Mount) used for the implant procedure passes through this hole (2d) it is possible to raise for the implant procedure.

Coupling portions 2e extending from the inside of the impression material accommodating portion 2 are formed, and this coupling part 2e is combined with each other in the vertical direction as shown in the AA 'cross section of FIG. The part 2 serves to prevent the flow up and down, or to separate.

In addition, as shown in Fig. 6, the projection part 2f is formed at one side of the impression material accommodating part 2, and when the impression material is hardened in the mouth of the patient, the operator inserts a finger and moves this part when it does not fall well. By being in a twisted state, the impression tray 10 can be easily removed.

In addition, the outer periphery of the impression material receiving portion (2) is formed with a long tooth-shaped projection (2g). The protrusion (2g) is useful when the material is added to the outer periphery of the impression tray 10 or when the outer periphery of the tray is changed in accordance with the oral state of the patient in order to facilitate the work during the pore, wax or modeling compound, etc. It serves to easily attach the material of. In addition, the protrusion (2g) also serves as a holding device to ensure that the impression material is sufficiently settled on the outer periphery, and also serves to accurately raise the valley between the teeth and the cheeks. In addition, as in the outer periphery of the impression material accommodating part 2, the extremity-shaped projection 2g is formed long on the outer side of the engaging portion 2e, and has the same role as that formed in the outer periphery of the impression material accommodating part 2e. Will be

The hinge portion 3 serves to rotate the impression material accommodating portion 2 divided by the rotation of the handle portions 1 ', 1 "to rotate. The width W1 of the impression material accommodating part 2 becomes narrow so that the arch can be applied to a narrow patient (FIG. 7a), and when the handle part 1 ', 1 "is narrowed to the left and right. The width W2 of the impression material accommodating part 2 is widened so that it can be applied to a patient with a wide arch (FIG. 7B).

The dental impression tray described above may be applied to the lower jaw as well as to the upper jaw. As shown, the tray applied to the mandible does not need the coupling part 2e, and the width of the arch may be used by using a handle to fit the size of the mandible as described above.

In addition, the present invention has shown an embodiment of the impression tray that can be applied to the case where the patient is preserved as is or the arch is rarely very large patient, as shown in Figure 9, the impression material receiving portion (2) for expansion The implant hole 2b formed by positioning the protrusions 4a 'and 4a' at the end of the impression material receiving portion by having an extension 4 coupled to an inner end of the bottom face and having protrusions 4a 'and 4a "formed on its bottom surface. When coupled to the coupling hole (2h ') adjacent to the coupling hole and the coupling hole (2h ") formed at the end of the impression material receiving portion 2, it is coupled in a stable state can be used normally as described above.

In addition, this coupling structure, as shown in Figure 10, the projections (4a ', 4a ") formed on the bottom surface is coupled to the end of the coupling hole (2h') and the impression material receiving portion 2 adjacent to the implant hole (2b) It is to be coupled to the formed coupling hole (2h "), and the standard is appropriately used so that it can be forcibly pressed by elasticity inherent to the synthetic resin material. In addition, it is a matter of course that the expansion portion 4 can be used in combination with the impression tray 10 by other fastening structure.

In addition, unlike the extension portion 4 used in the combination shown in Figures 9 and 10, Figure 11 shows the impression tray 10 having an extension portion 4 is formed with a cutout line (4b). Since the perforated line 4b is formed in the expansion part 4 located at the inner end of the impression material accommodating part 2, the patient who is kept as it is is applied using the extension part 4, and the patient without love is What is necessary is just to apply the impression tray 10 in the state which cut | disconnected and removed the expansion part 4 using the cutting line 4b.

As described above, according to the present invention, the width of the tray can be adjusted appropriately regardless of the size of the arch, which varies depending on the shape of the mouth and teeth of the patient, and is applicable to all patients, as well as adjusted at the time of impression taking. It is effective to raise the position accurately and quickly by keeping the position stable. In addition, since the impression tray is made of low-cost synthetic resin material, it is not necessary to disinfect and sterilize by disposing after use for a single time, so it is convenient to use, and hygienic dental treatment is useful. The procedure can also be used for various purposes.

Claims (8)

The handle part 1, an impression material accommodating part 2 formed into a U-shaped cross section to receive an impression material, and a hinge part 3 between the handle part 1 and the impression material accommodating part 2 are provided on the left and right sides. In the well-known thing which acquires the impression of the arch, by adjusting the left-right width of the impression material accommodating part 2 divided into Long hole (1a) with a screw pitch formed on one handle portion (1 ') made of synthetic resin, An extension part 1c extending from the other handle part 1 "made of synthetic resin and having a coupling protrusion 1b that is coupled to the long hole 1a and fixedly couples the handle parts 1 'and 1" to each other. Dental impression tray, characterized in that. The method of claim 1, Dental impression tray, characterized in that the coupling portion (2e) consisting of the coupling portion (2e) extending from the inside of the impression material receiving portion (2) is coupled to cross each other up and down. The method of claim 1, Dental impression tray, characterized in that the one side of the impression material receiving portion (2) is formed with a protrusion (2f) for removal after completion of the impression by the impression material. The method of claim 1, It is further provided with an extension part 4 which is coupled to the inner end of the impression material accommodating part 2 and has protrusions 4a 'and 4a "coupled to the coupling holes 2h' and 2h" of the impression material accommodating part 2. Dental impression tray, characterized in that. The method of claim 1, Dental impression tray, characterized in that provided with an extension portion (4) having a perforated line (4b) at the inner end of the impression material receiving portion (2). The method of claim 1, Dental impression tray, characterized in that it further comprises an implant hole (2b) formed in the lower portion of the impression material receiving portion (2), the incision portion (2c) is possible to expand on the outside. The method of claim 1, Dental impression tray, characterized in that the reinforcement-shaped projection (2g) is formed long on the outer periphery of the impression material receiving portion (2). The method of claim 2, Dental impression tray, characterized in that the elongated protrusion (2g) is formed long on the outside of the coupling portion (2e).