JPH11340A - Working jig for dental technique - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working jig for dental techniques, having good workability. SOLUTION: A leg 3 has an integrated form that continues in the direction indicated by the arrow α, positioning in the direction indicated by the arrow βis achieved by means of the leg 3 and a hole 5h, and positioning can be achieved also by providing projecting and recessed parts that continue in the direction indicated by the arrow α, on the surface of contact between a projecting base 2 and a recessed base 5. Since the projecting base 2 has the leg 3, an operator when performing an actual operation can perform an operation with an abutment 11a and the like by holding the leg 3. Since the leg 3 is tapered, it is easy to insert into the hole 5h.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working jig for dental technics, and more particularly to an improvement in workability.

[0002]

2. Description of the Related Art In general, when a dental crown is formed with a cast crown or the like in a dental technician, the forming work is performed while checking the fitting state of the formed crown with the tooth. . In this case, since the surrounding teeth interfere with the work, it is necessary to take out only the target tooth independently of the other teeth. In addition, since it is necessary to check for interference between the created crown and the surrounding teeth, the positional relationship of the extracted teeth with respect to the other teeth is reproduced in the same way as before the division, and the adjacent teeth It is necessary to be able to adjust the distance (contact point).

[0003] Japanese Patent Publication No. 6-63343 discloses a working jig 110 for dental technics as shown in FIG. The work jig 110 includes a base 113 and a pedestal 1.
15 is comprised. The base 113 has a large number of pins 131 provided on the surface. Pedestal 115 and base 1
A number of fitting holes (not shown) for fitting with the pins 131 are provided on the contact surface of the pin 13. The work jig 110 is used as follows.

[0004] The tooth model 11 is bonded to the pedestal 115. Then, a slit is formed at a predetermined position of the tooth model 11 together with the pedestal 115 on both sides of the tooth for forming the casting crown. Thereby, only the target tooth can be freely taken out. Further, since the base 113 and the pedestal 115 are positioned by the pins 131 and the fitting holes, the positional relationship of the extracted teeth with respect to other teeth can be reproduced.

However, the work jig 110 has the following problems. First, when each tooth of the dental mold targeted for the dental technic is small, the cut width becomes narrow. Therefore, at the cutting position, the pedestal 115 and the base 11
3 may be cut so that the positioning pin 131 is not included. In this case, the target tooth cannot be positioned on the adjacent tooth. The same applies to the case of a round tooth model including the front teeth to the back teeth. In order to solve such a problem, it is conceivable to increase the number of pins 131. However, if the number is too large, the fitting work between the two becomes complicated.

Further, the work jig 110 has a problem that workability is poor. For example, a tooth model for producing a cast crown is taken out, and an operator supports the tooth model with one hand to perform an operation. However, since the supporting portion is only the plate-shaped portion of the pedestal 115, it is very difficult to hold and work.
Further, when the contact point is adjusted by frequently removing a part of the pedestal 115 from the base 113 and adjusting the contact point, there is a problem that the work is difficult because the thin part of the pedestal 115 is held. .

An object of the present invention is to solve the above-mentioned problems and to provide a work jig for a dental technician having good workability.

[0008]

According to a first aspect of the present invention, there is provided a work jig for a dental technician, which is a first base member on which a tooth model of the dental technic is mounted and fixed, and on which a tooth model is mounted. A first base member having a leg portion protruding from the mounting portion and the mounting portion, a first base member having a hole into which the leg portion of the first base member can be inserted and fitted, and the first base member can be detached. A work base for a dental technician, comprising: a second base member fixedly held to the first base member, wherein a leg portion of the first base member is substantially in the same direction as a tooth row direction of the tooth profile model. The first base member and the second base member are displaced in a second direction orthogonal to the first direction by fitting with the hole portion. To prevent the first base member and the second base member from being fitted to each other,
The first base member and the second base member
Are formed continuously so as to prevent the deviation in the direction.

The convex base 2 according to the second aspect is a first base member of the working jig of the dental technic according to the first aspect.

[0010] The base member of the third aspect is the second base member of the working jig of the dental technic of the first aspect.

The work jig for a dental technic according to claim 4 is a first base on which a tooth model of the dental technic is mounted and fixed,
A first base portion having a mounting portion on which the tooth model is mounted and a leg portion protruding from the mounting portion, a hole portion capable of inserting and fitting the leg portion of the first base member; A dental jig working jig provided with a second base member for fixing and holding the first base member in a detachable manner, wherein positioning in the first direction is performed by a hole and a leg-shaped part; Positioning in two directions is
The step is performed by the unevenness continuously provided in the first direction on a portion other than the leg portion of the first base portion and the unevenness continuously provided opposite to the second base portion. , Is characterized.

[0012]

According to the working jig of the dental technic of the present invention, the leg portion of the first base member is arranged in a first direction which is substantially the same as the dentition direction of the tooth model. It has a continuous integral shape and fits into the hole,
Between the base member and the second base member in a second direction orthogonal to the first direction. Further, the first base member and the second base member are fitted to each other to prevent the first base member and the second base member from being displaced in the first direction. Asperities are continuously formed. Therefore, positioning in the first direction and the second direction can be performed. Further, since the first base has the leg portions, the worker can carry out the work by holding the leg portions when actually performing the work. This makes it possible to provide a work jig for a dental technician with improved workability.

According to a fourth aspect of the present invention, the positioning jig in the first direction is performed by the hole and the leg, and the positioning in the second direction is performed by the leg of the first base. Irregularities continuously provided in the first direction on portions other than the second portion;
By the unevenness continuously provided facing the base part of
Do. Therefore, the worker only needs to consider the positioning in the second direction at the initial stage of inserting the leg-shaped portion into the hole. Thereafter, the portions other than the leg portions come into contact with each other, whereby the positioning in the first direction can be performed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. The work jig 1 shown in FIG. 1 includes a convex base 2 and a concave base 5.

The convex base 2, which is a first base member, includes a leg 3, which is a leg, and a table 4, which is a mounting part. The tooth model 11 is bonded to the mounting surface 4b. On the contact surface 4a, irregularities are formed continuously in the arrow α direction. Surfaces 3a, 3 of leg 3 parallel to arrow α direction
b has a tapered shape that becomes thinner toward the tip.

The concave base 5 has a hole 5h and a contact surface 5a. The hole 5h is a hole into which the leg 3 is inserted,
Like the leg 3, it has a tapered shape. As will be described later, the hole 5h is penetrated so that the convex base 2 can be easily removed from the concave base 5. An arrow α is formed on the contact surface with the convex base 2 so as to fit with the contact surface 4 a of the convex base 2.
The unevenness continuous in the direction is formed.

The convex base 2 is positioned with respect to the concave base 5 in the first direction indicated by the arrow α by fitting the contact surfaces 4a and 5a, and the leg 3 and the hole 5h are fitted. In some cases, positioning in the direction of the arrow β, which is the second direction, is performed.

Next, a method of using the work jig 1 will be described by taking as an example a case where a casting crown is formed on the abutment tooth 11a. The tooth model 11 is bonded to the mounting surface 4b of the convex base 2 with an adhesive or the like. Abutment tooth 1 for which a casting crown is created
The tooth model 11 and the convex base 2 are cut on both sides XX and YY of 1a. In the present embodiment, cutting was performed using a saw for ordinary dental technics.

By this division, the convex base 2 to which the tooth model 11 is adhered is divided into three segments. Each of these three segments is inserted into the concave base 5.
The inserted state is shown in FIG. 2A. In this manner, each segment is positioned in the direction of the arrow α by fitting the contact surface 4a and the contact surface 5a, and is positioned in the direction of the arrow β by fitting the leg 3 to the hole 5h.

FIG. 2B is a view from the direction of arrow h in FIG. 2A. Thus, the hole 5h of the concave base 5 is penetrated.
In this state, when performing the operation of FIG.
By pushing out the end portion of the tooth model 11 from the back of the tooth, it can be taken out together with the segment 14 including the abutment tooth 11a as shown in FIG. 2C.

The leg 3 may be shaped halfway through the hole 5h.

When the operation of the casting crown is completed and the contact point is adjusted, the segment 14 is inserted into the concave base 5 again. In this case, the positioning in the direction of the arrow α is performed by fitting the positioning portion 16a and the positioning portion 15a. On the other hand, in the direction of arrow β, positioning is performed by fitting leg portion 3 and hole 5h.

As described above, the leg 3 is formed in an integral shape continuous in the direction of the arrow α, the leg 3 and the hole 5h are positioned in the direction of the arrow β, and the contact surface between the convex base 2 and the concave base 5 is formed. The positioning can be performed easily and reliably even when the tooth profile model 11 is appropriately divided by providing the concavities and convexities continuous in the arrow α direction.

Further, since the convex base 2 has the legs 3, when the worker actually works, the operator has a part of the legs 3 and can work on the abutment teeth 11a and the like. . Therefore, it is possible to easily perform an operation for forming a casting crown and the like.

Since the leg 3 has a tapered shape, it can be easily inserted into the hole 5h. Thus, the arrow α
By performing the positioning in the direction and the β direction in separate portions, it is possible to provide a position that is easy to insert and that is surely positioned.

Further, since the wavy irregularities are not parallel to the same direction as the insertion direction, the irregularities facilitate alignment of the initial contact.

Next, another embodiment will be described with reference to FIG. In the first embodiment, the mounting surface 4b
Although the continuous irregularities are provided on the contact surface 4a on the back surface of the table part 4, the continuous irregularities as shown in FIG. Also in this case, the positioning in the arrow β direction may be performed by the leg 3 and the hole 25h, and the positioning in the arrow α direction may be performed by the contact surface 24a and the contact surface 25a. Therefore, the width W1 may be smaller than W2 and the width W3 may be smaller than W4. As a result, positioning only in the direction of arrow β can be performed on contact surface 24a and contact surface 25a. In this case, the continuous irregularities of the contact surface 24a are formed as continuous irregularities at right angles. However, any continuous irregularities may be used. May be adopted.

FIG. 3C shows a cross section taken along the line Z0-Z0 of FIG. 3A.
In this manner, the surfaces 24c and 24d may be tapered, and the concave base 5 may be shaped so as to fit therewith. The surface 24
About c and 24d, it is good also as not being a taper shape but being parallel to an insertion direction.

FIG. 4 shows another embodiment. In the above embodiment, the case where the positioning in the direction of the arrow α is provided on the table 4 has been described. In this embodiment, the positioning in the direction of the arrow α is also performed by providing the side of the leg 3.

FIG. 4A is a perspective view, and FIG.
5 is a plan view as viewed from the direction of the arrow γ in FIG. As described above, continuous irregularities are formed on the side surface of the leg 3, and such irregularities are tapered toward the tip end of the leg 3. Thereby, even when the leg 3 is inserted,
Since it is not necessary to simultaneously perform positioning in the directions of the arrows α and β in both directions at the time of insertion, handling operability is improved.

The tapered shape of the leg 3 is shown in FIG.
As shown in D, only the base may be fitted into the hole 5h of the concave base 5 and the tip may be formed smaller in width than the hole shape. That is, in this case, in the Z2-Z2 cross section, the shape of the leg 3 is fitted to the hole of the concave base 5 only near the root, and the tip is formed to be narrower than the hole. Further, in FIG. 4B, for the width W <b> 7, the shape of the hole of the concave base 5 is larger than that of the convex base 2. Therefore, in the initial insertion, in the direction of the arrow β, the position is automatically determined by inserting the leg 3 along the tapered shape of the hole, even if the position is not so precisely determined. Also,
Ultimately, the positioning in the direction of the arrow β can be reliably performed with the width W8, which is the root dimension of the leg 3, and the positioning in the direction of the arrow α can be performed with continuous unevenness.

As for the shape of the leg 3, any shape that can be fitted in the hole 5h to prevent the displacement in the β direction can be used.
Any type may be used.

FIG. 5 shows another embodiment. In this embodiment, a projection is provided on the contact surface 4a of the table portion 4, and continuous irregularities are formed on the side surface. As shown in FIG. 5B, the contact surface 44a has irregularities that are continuous in the direction of the arrow α. FIG. 5B is the same as FIG.
FIG. 5 is a view in the direction of the arrow δ in FIG.

In each of the embodiments shown in FIGS. 4 and 5,
Although only the form of the convex base 2 is shown, the concave base 5 may have a corresponding form.

As shown in FIG. 7A, a projection 85 may be provided at the tip of the leg 3 so that the convex base 2 can be held on the concave base 5 in a state where it cannot be removed. Thereby, the contact surface 4a and the contact surface 5a can be more closely adhered (prevention of floating). In this case, escape portions 81 and 87 may be provided to facilitate the insertion of the leg 3. Further, in this case, the retaining of the concave base 5 is prevented by the protrusion 85.
Is performed at the engagement portion 83. Therefore, in order to simplify the insertion / extraction operation, if the operator pulls out the table portion 4 in the direction of the arrow ε3, the shapes of the protrusion 85 and the engaging portion 83 may be determined to such an extent that the operator can pull out. The protrusion 8
Reference numeral 5 is provided on the entire surface in the direction of arrow α in FIG.
Therefore, regardless of the position at which the tooth profile model 11 is divided, the retaining shape can be set.

FIG. 6 illustrates an articulator 50 suitable for the work jig 1 shown in FIG. In this embodiment,
Since the tooth model is adhered to the convex base 2, the height cannot be freely set unlike the conventional case where the working model is formed of gypsum. Therefore, the articulator 50
In the above, the second connecting rod 52 can be moved in the direction of the arrow ε4 or in the opposite direction so that the upper and lower positions can be aligned.

The concave base 5 is provided with an articulator hole 5t, and the articulator base 59 is similarly provided with an articulator hole 59t.
Is provided. The tooth model 61 is adhered to the occlusal base 59 with a double-sided tape or the like. The U-shaped end 51a of the first connecting rod 51 is inserted into the articulator hole 5t. The U-shaped end 57a of the third connecting rod 57 is inserted into the articulator hole 59t. The adjustment screw 53 is loosened, and the position of the second connecting rod 52 is determined so that the occlusal base 59 and the working model 58 have a just height. Since the ball joint 55 can be moved in any of the 360-degree directions, if the height of the tooth model 61 and the working model 58 is determined, the engagement of the upper and lower teeth can be checked. Thus, the articulator 5
By making 0 freely adjustable in the height direction in the direction of arrow 53, it is not necessary to fix the working model and the articulator with gypsum as in the prior art.

As described above, in the present embodiment, the articulator hole 5t and the articulator hole 59t are provided in a direction parallel to the direction ε1 in which the teeth of the occlusal base 59 and the working model 58 are arranged. Thereby, it is possible to perform the alignment in the direction parallel to the direction ε1.

In the articulator 50, the upper and lower tooth models may be aligned in the direction of the arrow ε1 and then bonded.

In this embodiment, the convex base 2
And the concave base 5 was made of hard plastic.
However, the material is not limited to this, and any material may be used as long as it holds the tooth model 11 and ensures and easily fits the convex base 2 and the concave base 5.

In this embodiment, the ends of the third connecting rod 57 and the first connecting rod 51 are U-shaped. However, the present invention is not limited to this.

In this embodiment, the ends of the third connecting rod 57 and the first connecting rod 51 are fixed to the articulator by inserting the ends into holes. However, the present invention is not limited to this. Alternatively, as shown in FIG. 7B, the fitting may be performed by sliding in the direction of arrow ε1 so as not to come off in the direction of height ε3.

In the present embodiment, the tooth model 1
The case where four teeth exist in 1 has been described, but in the case of a round tooth model including from the front teeth to the back teeth, it is not a linear shape but a round type according to the shape of the tooth model. What is necessary is just to prepare the convex base 2.

In the articulator 50 shown in FIG.
Although the ball joint 55 is provided at one end of the second connecting rod 52, the ball joint 55 may be provided at a bent portion of the first connecting rod 51. In addition, any type may be used as long as it can move in the 360-degree direction, and another universal joint (universal joint) may be employed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a working jig 1 according to an embodiment of the present invention.

FIG. 2 is a view for explaining a method of using the work jig 1;

FIG. 3 is a perspective view of a second embodiment.

FIG. 4 is a perspective view and a plan view of a third embodiment.

FIG. 5 is a side view and a plan view of a fourth embodiment.

FIG. 6 is a perspective view showing a state where the articulator 50 is attached.

FIG. 7 is a diagram showing another embodiment.

FIG. 8 is a perspective view of a conventional work jig 110.

[Explanation of symbols]

 2 Convex base 3 Leg 4 Table 4a Contact surface 4b Mounting surface 5 Recessed base 5a Contact surface 5h Hole 11 Tooth model 11a Abutment tooth 14 Segment 15a Positioning unit 16a Positioning unit 22 Convex base 24b Mounting surface 25a Contact Surface 25h Hole 32 Convex base 42 Convex base 44a Contact surface

Claims (4)

[Claims] 1. A first type on which a tooth model of a dental laboratory is mounted and fixed.
A first base member having a mounting portion on which the tooth model is mounted and a leg portion protruding from the mounting portion, wherein the leg portion of the first base member is inserted and fitted. A second hole for fixing the first base member so as to be detachable.
A work jig for a dental technician, comprising: a leg member of the first base member, wherein the leg portion of the first base member is continuous and integrated in a first direction that is substantially the same direction as the dentition direction of the tooth profile model. The second base member, which is formed in a shape and fits with the hole, and is orthogonal to the first direction between the first base member and the second base member.
The first base member and the second base member are fitted to each other to prevent the first base member and the second base member from being displaced in the first direction. A work jig for a dental technician, characterized in that unevenness for preventing a direction shift is continuously formed. 2. A first base member of the dental jig work jig according to claim 1. 3. The second base member of the work jig of the dental technician according to claim 1. 4. A first method for mounting and fixing a tooth model of a dental technician.
A base portion having a mounting portion on which the tooth model is mounted and a leg portion protruding from the mounting portion, wherein the leg portion of the first base member is inserted and fitted. A second hole for fixing the first base member so as to be detachable.
A working jig for a dental technician, comprising: a base member; a positioning member in a first direction, wherein positioning in a first direction is performed by a hole portion and a leg portion;
Positioning in the direction of the first base portion is provided with concavities and convexities continuously provided in a portion other than the leg portion of the first base portion in the first direction, and continuously provided in opposition to the second base portion. A work jig for a dental technician, characterized in that the work is performed by unevenness.