RU75303U1 - MATRIX HOLDER FOR DENTAL MATRIX (OPTIONS) - Google Patents

Abstract

A group of utility models relates to matrix holders of dental matrices. Technical result: reliable fixation of the position of the matrices during restoration of the teeth with the possibility of regulating the length of the matrix part of the tooth covering the tooth, as well as in the release of space in the oral cavity near the tooth being restored. The matrix holder in all 3 variants contains jaws connected to each other by an elastic element, and a groove 1 of retainers with parallel and expanding surfaces 2. In the first embodiment, the elastic element is made in the form of an open ring connected to the branches in the form of bent 75 .. .90 ° ends. In the 2nd embodiment, branches 6 are made of a piece of elastic wire, a handle 7 is formed at one end of each branch 6, and a retainer 8 is formed on the other, each of the retainers 8 is equipped with a groove 1. The elastic element can be made in the form of a coil spring 9, brackets and etc. In the 3rd embodiment, one or both of the clamps 11 are removable and connected to the branches 6 with the possibility of rotation at an angle of 0 ... 15 ° or 75 ... 90 °. The elastic element and branches can be performed as in the 1st and 2nd options. 3 n.p. f-ly, 15 wp f-ly, 21 ill.

Description

A group of utility models relates to medicine, namely to therapeutic dentistry, and can be used to fix dental matrices used in the restoration and correction of dental defects.

The prior art dental matrix holders for fixing the position of the matrix relative to the tooth.

In the description of the utility model of the Russian Federation No. 61546, IPC А61С 5/04, 03/10/2007, [1], two versions of the matrix holder of dental matrices are presented. According to the first variant, the matrix holder of the dental matrices is made in the form of an open ring, the ends of which are equipped with clamps of dental matrices containing a pair of jaws. According to the second embodiment of the utility model [1], the matrix holder of the dental matrices comprises a pair of jaws made of wire, connected by a spring element between them and equipped with handles, each jaw is equipped with a matrix retainer. The latch in each of the embodiments of the matrix holder contains a tip that is inserted into the holes in the matrices. This embodiment of the matrix supports involves the implementation of a dental matrix with means for fixing the position of the matrix in the form of holes arranged in a row, which narrows the possibilities of using the matrix holder.

Presented in the description of the utility model [1], the matrix holder according to the 1st embodiment is adopted as the closest analogue of the first embodiment of the claimed matrix holder.

In application for US invention No. 2007/0087310, IPC A61C 5/04, A61C 7/00, publication date 04/19/2007, [2], a matrix holder of dental matrices is presented, made in the form of a pair of jaws interconnected by an elastic element, a handle is formed at one end of each jaw, and a latch of a matrix connected to the wedge is formed at the other end, each of the clamps equipped with a groove for installing the wedge. A disadvantage of the known matrix holder is that it is designed to fix the matrices combined with the wedge. The matrix holder presented in the description [2] is taken as the closest analogue of the second and third variants of the matrix holder.

In US patent No. 5055045, IPC A61C 5/04, A61C 5/12, A61C 5/00, publication date, 10/08/1991, [3], a matrix holder is provided equipped with a latch arranged to move relative to the matrix.

The technical result of the claimed variants of the utility model is to reliably fix the position of the dental matrices during tooth restoration with the possibility of regulating the length of the part of the matrix covering the tooth to be restored.

The technical result also consists in the release of space in the oral cavity near the restored tooth.

The essence of the group of utility models is as follows.

The matrix holder of dental matrices according to the first embodiment, as in the closest analogue [1], is made in the form of an open ring, the ends of which are equipped with clamps of dental matrices, but unlike the closest analogue [1], at least one of the clamps has a groove and the free ends of the latch are located at an angle close to 90 degrees to the plane of the open ring.

The matrix holder according to the 1st embodiment is characterized in that at least one of the latches is equipped with at least two grooves.

The matrix holder according to the 1st embodiment is characterized in that at least one of the grooves of the at least one latch is made expanding toward the free end of the latch.

The matrix holder according to the 1st embodiment is characterized in that the middle surfaces of the grooves are made parallel to each other.

The matrix holder according to the 1st embodiment is characterized in that the open ring and the bent ends of the clamp are made of wire.

The matrix holder according to the 1st embodiment is characterized in that the open ring and the bent ends of the retainer are made of a strip of elastic material, and the grooves are made in the form of a slot in the strip of elastic material.

The matrix holder of dental matrices according to the 2nd embodiment, as in the closest analogue [2], is made in the form of a pair of branches connected by an elastic element, a handle is formed at one end of each branch and a matrix retainer at the other end, each of the clamps equipped with a groove, but unlike the closest analogue [2], the branches are made of a piece of elastic wire.

The matrix holder according to the 2nd embodiment is characterized in that the elastic element is made in the form of a bracket, the free ends of which are connected to the handles.

The matrix holder according to the 2nd embodiment is characterized in that the elastic element is made in the form of a cylindrical spring containing at least half of the coil.

The matrix holder according to the 2nd embodiment is characterized in that at least one of the latches is equipped with at least two grooves.

The matrix holder of dental matrices according to the 3rd option, as in the closest analogue [2], is made in the form of a pair of branches connected by an elastic element, but unlike the most

close analogue [2], at least one of the latches made removable.

The matrix holder according to the 3rd embodiment is characterized in that at least one of the removable clips is connected to the jaw with the possibility of movement relative to the jaw.

The matrix holder according to the 3rd embodiment is characterized in that at least one of the removable clips is connected to the jaw with the possibility of rotation about an axis located parallel or at an angle of 0 ... 15 degrees to the surface formed by the jaws.

The matrix holder according to the 3rd embodiment is characterized in that at least one of the removable clips is rotatably connected to the jaw relative to an axis located at an angle of 75 ... 90 degrees to the surface formed by the jaws.

The matrix holder according to the 3rd embodiment is characterized in that the branches are made of a piece of elastic wire.

The matrix holder according to the 3rd embodiment is characterized in that the elastic element is made in the form of an open ring.

The matrix holder according to the 3rd embodiment is characterized in that the elastic element is made in the form of a bracket, the free ends of which are connected to the handles.

The matrix holder according to the 3rd embodiment is characterized in that the elastic element is made in the form of a cylindrical spring containing at least half of the coil.

A group of utility models is illustrated by drawings.

Figure 1. General view of the matrix holder according to the 1st embodiment, made of elastic wire.

Figure 2. General view of the matrix holder according to the 1st embodiment, made of a strip of elastic material.

Figure 3. Matrix holder according to the 1st option when viewed in plan.

Figure 4. Matrix holder according to the 1st embodiment when viewed from the side.

Figure 5. Matrix holder according to the 1st embodiment when viewed from the front.

6. Matrix holder according to the 1st embodiment when viewed from the front with an expanding groove.

7. Section AA in FIG. 5.

Fig. 8. The matrix holder according to the 1st embodiment when viewed in plan with a groove formed by deformation of the material.

Fig.9. The matrix holder according to the 1st embodiment when viewed from the side with a groove formed by deformation of the material.

Figure 10. The matrix holder according to the 1st embodiment when viewed from the front with a groove formed by deformation of the material.

11. General view of the matrix holder according to the 2nd embodiment with an elastic element made in the form of a cylindrical spring.

Fig. 12. General view of the matrix holder according to the 2nd embodiment with an elastic element made in the form of a bracket.

Fig.13. Matrix holder according to the 2nd option when viewed from the side.

Fig.14. General view of the matrix holder according to the 3rd embodiment with the axis of rotation of the removable clips located at a small angle to the surface formed by the branches.

Fig.15. General view of the matrix holder according to the 3rd embodiment with the axis of rotation of the removable clips located at a large angle to the surface formed by the branches.

Fig.16. Section BB in Fig. 14.

Fig.17. Section BB in FIG.

Fig. 18. General view of the matrix holder according to the 3rd embodiment in the form of an open ring with an axis of rotation of removable clips, located at a small angle to the surface formed by branches.

Fig.19. General view of the matrix holder according to the 3rd embodiment in the form of an open ring with an axis of rotation of removable latches, located at a large angle to the surface formed by branches.

Fig.20. An example of fixing a matrix in a matrix holder.

Fig.21. The scheme of fixing the matrix matrix holder on the restored tooth.

Implementation of a group of utility models.

The matrix holder of dental matrices in all 3 variants contains jaws interconnected by an elastic element, and a dental matrix retainer containing a groove 1, which can be performed with parallel and expanding surfaces 2.

In the matrix holder according to the 1st embodiment (Figs. 1, 2, 3), the elastic element is made in the form of an open ring 3 connected to branches, which are made in the form of ends 4 bent by about 75 ... 90 degrees (Figs. 4, 5 ) In the branches made in the form of bent ends 4, at least one through groove 1 is made (Figs. 1, 2, 5, 6), the surfaces 2 of which can be made as with parallel (Fig. 5) 5 grooves 1 (groove - the surface equidistant from the surfaces 2 of the groove 1), and not parallel to the median surfaces 5 (Fig.6), with the formation of the expanding groove 1. When performing a matrix holder with two grooves 1, 5 of them can intersect both under a straight line (Fig.7), and at an acute angle (not shown in FIG.). When performing a matrix holder with three and a large number of grooves 1, their middle surfaces 5 intersect at equal angles (not shown in Fig.).

The open ring 3 can be made of wire (figure 1), strip (figure 2) or in another way from an elastic material. The groove 1 can be made by electrospark processing (Fig. 1, 2, 5, 6), deformation of the material from which the latch is made (Fig. 8, 9, 10), and in other ways.

In a preferred embodiment of the matrix holder according to the first embodiment shown in Figs. 1, 3 ... 6, the open ring 1 is made of wire with a circular cross-section, branches made in the form of ends 4 are bent at an angle of 75 ... 90 degrees from the plane of the half ring 3, the grooves 1 are made expanding, the middle surface of 5 grooves 1

are not parallel to each other, and the width of the grooves exceeds the width of the matrix by 20 ... 40% and is 0.1 mm.

In the matrix holder of dental matrices according to the 2nd embodiment shown in Figs. 11 and 12, the jaws 6 are made of a piece of elastic wire, a handle 7 is formed at one end of each jaw 6, and the matrix retainer 8 is formed at the other end, each of the latches is equipped with a groove 1. The elastic element can be made in the form of a cylindrical spring 9 (Fig.11), containing at least half of the coil, or in the form of a bracket 10 (Fig.12). Each of the latches can be equipped with one (Fig. 11, 12), two (Fig. 7) and more grooves 1, the surfaces 2 of each of which can be either parallel or non-parallel to each other, with the formation of an expanding groove 1. In this case, the jaws 6 can be made bent to remove the grooves 1 of the retainers from the shoulders of the jaw 6 to a height not exceeding the characteristic height of the tooth (not shown in Fig.).

The groove 1 in the retainer 8 of the matrix holder according to the 2nd embodiment can be made by electrospark processing (Fig. 11), deformation of the material from which the clamp is made (Fig. 12), and in other ways.

In a preferred embodiment, the matrix holder according to the 2nd embodiment, a pair of handles 7, an elastic element, for example, a cylindrical spring 9, and branches 6 are formed from one piece of wire, the ratio of the distances on the projection onto the plane of symmetry of the matrix holder from the elastic element, for example, the axis of the cylindrical springs 9, to the groove 1 of the retainer 8 (Ln) and to the handles 7 (Lp), it is recommended to perform not exceeding 2 ... 2.5: Ln / Lp = 2 ... 2.5 (Fig.13). When performing an elastic element in the form of a coil spring 9 with a coil diameter D, the ratio of the distance Ln to the diameter of the coil D of the coil spring 9 is in the range 2 ... 5: Ln / D = 2 ... 5 (Fig.13).

In the matrix holder of dental matrices according to the 3rd embodiment, at least one of the clips 11 is removable (Fig. 14, 15). At least one of the removable clips 11 is connected to the jaw 6 with

the ability to move relative to it, for example, due to rotation. Moreover, the rotation axis 12 of the removable latch 11 can be located both at a small angle of 0 ... 15 degrees (Fig. 14, 16), and at a large angle of 75 ... 90 degrees (Fig. 15, 17) to the surface formed jaws 6.

The elastic element of the matrix holder according to the 3rd embodiment can be made in the form of an elastic open ring 3, the free ends of which 4 are bent (Fig. 18) or located in the plane of the half ring (Fig. 19). The elastic element of the matrix holder according to the 3rd embodiment can also be made in the form of a bracket 10 (Fig. 14) or a cylindrical spring 9 (Fig. 15) containing at least half a turn, and branches 6 from a piece of elastic wire.

In all three versions of the matrix holder in cross section, the wire contour can be in the form of a circle, a rectangle (for example, a square, strip, etc.), a polygon, etc., which can be completely or only at the bent ends 4 or clips 8 Fig. not shown).

Variants of the matrix holder are used as follows.

The ends of the dental matrix are tucked into the grooves 1 of the matrix holder retainer so that the length of the formed matrix loop is slightly more than half the circumference of the restored tooth (Fig. 20). The elastic element of the matrix holder is divorced and a tooth is enclosed by the formed loop, as shown in Fig. 21. After this, the matrix holder is moved in the grooves 1 to the position in which the latches 4 are in the gap behind the line M1M2 of the maximum width of the tooth. When the clamps are displaced beyond the M1M2 line with a simultaneous decrease in the effort of branch dilution, the clamps come closer under the action of elastic forces. Due to the proximity of the thickness of the matrix and the width of the groove when the latches approach each other, the matrix breaks in the groove region and the position of the matrix is fixed relative to the matrix holder, and from this

moment, the elastic forces of the matrix holder pull the matrix around the tooth being restored.

The use of the described matrix holder facilitates the work of the dentist, provides the optimal location of the matrix relative to the restored tooth and creates the necessary effort to tension the matrix around the tooth.

To remove the matrix, the open ring 3 of the matrix holder is opened with forceps (not shown in Fig.) Or by pressing the handles 7, the clamps are opened and the matrix moves away from the surface of the tooth being restored. After removing the matrix from the tooth being restored, the matrix is removed from the grooves 1, and the matrix holder is released for further work.

When performing the latch with two (7) or more grooves 1, the ends of the matrix can be refilled first in one groove 1, and after crossing the grooves 1 in the other groove. This ensures reliable fixation of the matrices in the matrix holder.

The implementation of the matrix holder according to the 1st embodiment, the dimensions of the open ring 3 allow you to set the matrix holder in a position convenient for the dentist, which frees up space near the restored tooth in the oral cavity.

When performing the matrix holder according to the 2nd embodiment, the location of the grooves 1 of the retainer 8 at a distance not exceeding the characteristic height of the tooth, allows you to conveniently position the matrix holder and free up the area near the tooth being restored. Compliance with the ratio Ln / Lp = l, 5 ... 2.5 ensures the convenience of work by reducing the effort of pressing the handles 7 of the branches 6, and the creation of sufficient force for reliable fixation of the matrix in the grooves 1 of the latches 8 of the branches 6.

The implementation of the matrix holder according to the 2nd embodiment with a cylindrical spring 9 in compliance with the ratio Ln / D = 2 ... 5 from one piece of wire provides the elastic force of the spring 9, sufficient for reliable fixation of the matrix in the working position.

The use of a matrix holder according to the 3rd option frees up space near the tooth being restored in the oral cavity.

The combination of features of each of the options for the matrix holder provides the ability to change the length of the matrix by moving the ends of the matrix in the grooves 1 in each of the options of the matrix holder, and reliable fixation of the position of the dental matrix in the grooves 1 when the matrix is fractured in the groove area with the same tension of the matrix around the tooth due to elastic forces. This combines all options of the matrix holder into a group of utility models, and meets the conditions for the unity of the options of utility models.

The degree of disclosure of the group of utility models is sufficient for the manufacture of options for matrix holders in enterprises producing dental supplies and equipment.

Designation of the positions of the group of utility models "Dental matrix matrix holder (options)"

1 - groove retainer of the dental matrix;

2 - the surface of the groove 1;

3 - open ring;

4 - branches made in the form of bent ends;

5 - the middle surface of the groove 1;

6 - jaws of the matrix holder according to the 2nd embodiment;

7 - handle matrix holder according to the 2nd option;

8 - retainer jaw matrix holder according to the 2nd option;

9 - a cylindrical spring of the matrix holder according to the 2nd embodiment;

10 - matrix holder bracket according to the 2nd embodiment;

11 - removable latch;

12 - axis of rotation of the removable latch 11

Ln is the distance on the projection onto the plane of symmetry of the matrix holder according to the 2nd and 3rd options from the elastic element to groove 1 of the retainer 8;

Lp is the distance on the projection onto the plane of symmetry of the matrix holder according to the 2nd and 3rd options from the elastic element to the handle 7 of branch 6;

D is the diameter of the coil of a coil spring 9.

Claims (18)

1. The matrix holder of dental matrices, made in the form of an open ring, the ends of which are equipped with clamps of dental matrices, characterized in that at least one of the clamps is equipped with a groove, and the free ends of the clamp are located at an angle close to 90 ° to the plane of the open ring . 2. The matrix holder according to claim 1, characterized in that at least one of the latches is equipped with at least two grooves. 3. The matrix holder according to claim 1, characterized in that at least one of the grooves of the at least one latch is made expanding towards the free end of the latch. 4. The matrix holder according to claim 1, characterized in that the axis of the grooves are made parallel to each other. 5. The matrix holder according to claim 1, or 2, or 3, or 4, characterized in that the open ring and the bent ends of the retainer are made of wire. 6. The matrix holder according to claim 1, or 2, or 3, or 4, characterized in that the open ring and the bent ends of the retainer are made of a strip of elastic material, and the grooves are made in the form of a slot in the strip of elastic material. 7. The matrix holder of dental matrices, made in the form of a pair of jaws interconnected by an elastic element, a handle is formed at one end of each jaw and a matrix retainer at the other end, each of the clamps is equipped with a groove, characterized in that the jaws are made of a piece of elastic wire . 8. The matrix holder according to claim 7, characterized in that the elastic element is made in the form of a bracket, the free ends of which are connected to the handles. 9. The matrix holder according to claim 7, characterized in that the elastic element is made in the form of a cylindrical spring containing at least half of the coil. 10. The matrix holder according to claim 7, or 8, or 9, characterized in that at least one of the latches is equipped with at least two grooves. 11. The matrix holder of dental matrices, made in the form of a pair of jaws interconnected by an elastic element, characterized in that at least one of the retainers is made removable. 12. The matrix holder according to claim 11, characterized in that at least one of the removable clips is connected to the jaw with the possibility of movement relative to the jaw. 13. The matrix holder according to claim 12, characterized in that at least one of the removable retainer is rotatably connected to the jaw relative to an axis located parallel or at an angle of up to 15 degrees to the surface formed by the jaws. 14. The matrix holder according to claim 12, characterized in that at least one of the removable retainers is rotatably connected to the jaw relative to an axis located at an angle of 75-90 ° to the surface formed by the jaws. 15. The matrix holder according to claim 11, or 12, or 13, or 14, characterized in that the branches are made of a piece of elastic wire. 16. The matrix holder according to claim 11, or 12, or 13, or 14, characterized in that the elastic element is made in the form of an open ring. 17. The matrix holder according to claim 11, or 12, or 13, or 14, characterized in that the elastic element is made in the form of a bracket, the free ends of which are connected to the handles. 18. The matrix holder according to claim 11, or 12, or 13, or 14, characterized in that the elastic element is made in the form of a cylindrical spring containing at least half a coil.