KR101752210B1 - Glass fiber photopolymerization resin stiffening member and stiffening member therefrom - Google Patents

Abstract

A method for producing a glass fiber light-cured resin reinforcement material is disclosed. The method for manufacturing a glass fiber photopolymerizable resin reinforcement according to the present invention includes the steps of attaching a wax sheet to a main mold in a step of manufacturing a cured glass fiber frame using a master mold, Applying a resin separating agent to the hole and filling the partial resin; placing a glass fiber in the form of a mesh on the top of the wax sheet; and inserting the main mold on which the glass fiber is arranged into a vacuum device and pressing it in a vacuum state And curing the glass fiber in an apparatus equipped with a lamp, wherein the main mold is squeezed in a vacuum state; And immersing the master mold in which the glass fiber is hardened in a water bath at 100 DEG C to dissolve the wax sheet and then separating the hardened glass fiber from the master mold, wherein the mixing resin comprises 0.1 part by weight of elastomer per 100 parts by weight of the photopolymerizable resin (A) the warp yarns and the warp yarns of the fiber yarn made of glass fibers have a lattice form and the interval of the lattice is 0.7 mm to 1.2 mm And arranging the lattice such that the length and the length of the lattice are equal to each other, and filling the partial resin comprises raising the temperature of the prepared resin to 30 to 55 ° C .

Description

TECHNICAL FIELD [0001] The present invention relates to a glass fiber photopolymerization resin stiffening member and a stiffening member therefrom,

The present invention relates to a method for manufacturing a glass fiber photopolymerizable resin reinforcement for reinforcing denture fabrication, and more particularly, to a method for manufacturing a glass fiber photopolymerizable resin reinforcement material capable of drastically increasing volume stability and resin fracture strength due to shrinkage and To a reinforcing material.

In patients with multiple teeth missing, restorations such as bridges can be difficult to restore. In such cases, dentures, often called dentures, are implanted. Dentures refer to artificial restorations that artificially restore the shape and function of lost natural teeth and surrounding tissues in the absence of natural teeth. The artificial teeth, It is possible to use a denture (denture) of a form that can be inserted and removed from the mouth by connecting it with a denture.

The value of the resin is divided into two types, total denture and partial denture. A total denture is a form in which no teeth are left on the gums and jawbone, and the teeth of the teeth are made by using a metal skeleton, an artificial tooth, and a resin denture to attach to a partial defect of a tooth. In the case of conventional conventional dentures, it has been common to use only a medical resin or to insert a metal into a resin.

In the past, when the denture is manufactured using only the medical resin, the strength of the denture is so weak that a minute crack may occur during various stresses such as compressive stress, tensile stress, and vertical stress, There has been a problem that frequent breakage is caused by an external impact caused by a wearer's mistake. In order to compensate for this, dentures were manufactured by inserting metal into the resin. However, metal can maintain very good strength in various stresses rather than denture only using resin. However, during the casting process using a separate mold It took a considerable time to make it, and due to the nature of the metal, the weight and thickness were so significant that the foreign body sensation of the wearer's mouth was significant, which was inconvenient.

In particular, resin teeth are evaluated to be esthetically excellent because they can be made in the same color as the gingiva in the oral cavity. However, since the resin teeth have a large foreign body feeling in the oral cavity, they cause many inconveniences of the patients. For this reason, a method of reducing the thickness is often used. However, if the thickness is small, the problem of low fracture strength occurs.

Conventionally, a method of reinforcing the metal frame mainly on the resin denture was used as a method for reducing the fracture strength and reducing the thickness. However, such a conventional method is accompanied by various problems such as a metal frame being not chemically bonded with a resin denture and lowering the strength of the denture, as well as the separation and fracture of the metal frame and the resin denture due to the difference in thermal expansion coefficient between the resin and the metal Is also a problem. Particularly, the metal frame has a problem that the esthetic property is lowered in the oral cavity of the patient and the weight of the resin denture is increased, so that the maxillary denture often falls out in the oral cavity.

In order to overcome the above-mentioned problems of the conventional dentures, a method of fabricating dentures using glass fibers, which are used in various industrial fields, has been proposed. In particular, Patent Registration No. 10-0445603 'Denture base resin using glass fiber and its manufacturing method Discloses a method of preparing a denture after cutting glass fibers so as to have a certain size and thickness in a powder state of a medical resin. However, since the above-mentioned Patent No. 10-0445603 cuts the glass fiber and mixes with the resin, the bonding force between the cut glass fiber and the resin may be lowered and the content of the cut glass fiber may be limited. It may be useful to increase the intensity of specific stress. However, it can not be helpful to solve the fundamental problem because it is weak against various stresses and external shocks that may occur in the dentist's writing process.

Another conventional technique for solving such a problem is disclosed in Korean Patent No. 10-1101564. According to the above-mentioned patent, in the step of fabricating the denture using the mesh-shaped glass fiber, in the step of fabricating the hardened glass fiber frame using the master mold, a plurality of holes are punched in the wax sheet, A step of placing a glass fiber in the form of a mesh on the upper end of the wax sheet, a step of inserting the main mold on which the glass fiber is arranged into a vacuum device and pressing the vacuum device in a vacuum state, Curing the glass fiber in an apparatus equipped with a lamp and immersing the glass fiber cured main mold in a water bath of 100 DEG C to dissolve the wax sheet and then separating the cured glass fiber from the main mold . As a result, not only the time can be minimized compared to the method of making using metal, but also the effect of making a denture having a strength that is lighter and thinner than that of metal can be produced. Since glass fiber is made of transparent material unlike metal, And the thickness can be minimized, so that it is possible to provide the maximum satisfaction to the wearer since the foreign body feeling is small when worn.

However, there is still a need to increase the flexural strength of the denture without reducing the weight of the dental prosthesis.

The present invention provides a method for manufacturing a glass fiber light-cured resin reinforcing material capable of increasing the volume stability due to shrinkage and the fracture strength of the resin and further reducing the weight of the denture during the manufacture of the denture, And to provide such reinforcement.

According to another aspect of the present invention, there is provided a method for manufacturing a glass fiber-

After making an impression in the oral cavity using an individual tray from the edentulous, the main model is made, the wax is used from the main model, the artificial teeth are made by arranging the artificial teeth after making the occlusal surface, and the lead teeth of the artificial teeth are arranged in the plask, Cementing after first burial, applying a gypsum separating agent to the first buried gypsum-cemented gypsum, secondly burrowing the gypsum, curing the bond between the upper and lower sides of the flask, curing the second buried After the hardening of the gypsum is completed, the plask is immersed in a water bath at 100 ° C to dissolve the wax in the occlusion, and then the upper and lower sides of the flask are separated. The glass fiber frame is cured by using the main mold Fixing the cured glass fiber frame to the top of the transferred resin after transferring the resin to the top and bottom of the flask, A step of polymerizing the glass fiber and the resin by pressurizing the glass fiber and the resin after joining the upper and lower glass fibers and the lower glass fiberglass, and a step of separating the dentition from the flask after completion of the polymerization and completing the final dentin finish and polishing, In the manufacturing method, the step of fabricating the cured glass fiber frame using the main mold may include:

A step of attaching a wax sheet to the main mold, a step of punching a plurality of holes in the wax sheet, applying a resin separating agent to the perforated hole and filling the partial resin, Placing a main mold having the glass fiber therein in a vacuum state and pressing the main mold in a vacuum state, and curing the glass fiber in an apparatus equipped with a lamp, ; And immersing the master mold in which the glass fiber is hardened in a water bath of 100 DEG C to melt the wax sheet and then separating the hardened glass fiber from the master mold,

Wherein the step of disposing the glass fibers in the mesh-

(a) disposing a grating such that a transverse chamber and a longitudinal chamber of the fiber yarn made of glass fibers have a lattice form and the interval of the lattice is set to 0.7 mm to 1.2 mm, but the square and the width are the same ,

The step of filling the partial resin comprises:

(b) preparing a mixed resin prepared by mixing 0.1 part by weight to 1 part by weight of an elastomer with respect to 100 parts by weight of a photopolymerizable resin; And

(c) raising the temperature of the mixed resin prepared in the step (b) from 30 ° C to 55 ° C.

The method of manufacturing a glass fiber photopolymerizable resin reinforcement according to the present invention and the reinforcing material thereof have a problem in that the metal frame is used for the resin denture or the denture is not reinforced so that the dentition is low in fit and the fracture strength is low This makes it possible to increase the mesh lattice spacing in the process of fabricating the denture of the resin denture, so that the fabrication process can be simplified and the denture fitting can be improved by applying the glass fiber photopolymer hardening material with remarkably improved fracture strength.

Further, according to the present invention, it is possible to make the thickness of the denture thin by applying the glass fiber photopolymerizable resin reinforcement material, so that it has the advantage of lowering the foreign body feeling when the patient uses, and the fracture strength is increased, The dropout phenomenon is drastically reduced and the satisfaction of the user is high.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing a main process of a method of manufacturing a glass fiber light-
FIG. 2 is a flow chart showing a process of manufacturing a total denture using a glass fiber light-cured resin reinforcement manufactured by the method of FIG. 1, and FIG.
3 is a microscope photograph for explaining the lattice size of the glass fiber light-cured resin reinforcement produced by the method of manufacturing a glass fiber photopolymerizable resin reinforcement according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

In the process of fabricating dentures using glass fiber photopolymerization reinforcement, the main model is manufactured after the impression in the oral cavity is obtained from the edentulous from the edentulous model, the lead tooth is made by arranging the artificial teeth using the wax from the main model, Placing the plated lead in the flask, hardening the plaster with the gypsum and then hardening the plaster; applying the gypsum separator on the cured plaster of the firstly buried gypsum and then burying the plaster secondarily, And curing the hardened gypsum. When the secondarily buried gypsum is hardened, the plaster is placed in a water bath at 100 ° C to dissolve the wax in the occlusion, and then the upper and lower surfaces of the plaster are separated.

In addition, the denture manufacturing process may include the steps of fabricating a cured fiber-reinforced glass fiber frame using the master mold, and placing the cured fiberglass frame on the top of the transferred resin after transferring the resin to the top and bottom of the flask. Fixing the glass fibers and the resin to each other after bonding the upper and lower surfaces of the flask, and polymerizing the glass fibers and the resin, and separating the dentures from the flask after completion of the polymerization to complete the final denture after polishing and polishing .

On the other hand, the lattice spacing of the glass fibers having a mesh structure is limited due to the viscosity of the photopolymerizable resin. The reason for this is that the addition of a small amount of elastomer to the photopolymerizable resin and the impregnation with heat resulted in lowering the lattice spacing but increasing the curing time during photopolymerization. However, in the case of denture making, since it is not manufactured in the state of being mounted in the oral cavity, it is not a problem to increase the curing time in the light curing. In the present invention, viscosity is lowered at the expense of increased curing time in photopolymerization, and the amount of resin is reduced, thereby reducing the weight and preventing dropout.

FIG. 1 is a flow chart showing a main process of a method of manufacturing a glass fiber photopolymerizable resin reinforcement according to the present invention. Referring to FIG. 1, in the method for manufacturing a glass fiber photopolymerizable resin reinforcement according to the present invention,

[Reference picture 1]

The resin transferring space is secured by using a sheet wax as shown in (a) of the drawing (step S100). To this end, the sheet wax is placed on the buried master mold to ensure a space for the heat-polymerizing resin to be placed thereon in the subsequent process.

Next, a tissue stop is manufactured as in (b) (step S102). This serves to fix the glass fiber light-cured resin reinforcement so that it does not move in subsequent processes.

The separating agent is applied to the tissue stop part as shown in (c) (step S104), and is prepared so as to be separated when the photopolymerized resin is cured in a subsequent step.

[Reference picture 2]

Next, as shown in (a) of the reference photograph 2, a photocurable resin is applied on the tissue stop portion coated with the separating agent (Step S106), and a glass fiber photopolymerizable resin reinforcement is placed on the top of the sheet wax Step S108). Next, as shown in (c), it is placed in a vacuum packaging machine so that the light-cured resin reinforcement material and the sheet wax can be uniformly pressed together (step S110).

[Reference picture 3]

Next, UV light is irradiated to the glass fiber photopolymerizable stiffener by using a UV light curing unit as shown in (a) of the reference photograph 3, and the light-cured resin applied in the process described with reference to (a) And is fixed to the glass fiber photopolymerizable stiffener.

Next, as shown in (b), the sheet wax is melted by using a steamer to secure a space for the thermal polymerization resin (step S114). As shown in (c), a glass fiber light- (Step S116).

Thus, a glass fiber light-cured resin reinforcement material is prepared.

The glass fiber light-cured resin reinforcement prepared by the process described with reference to photographs 1 to 3 is applied to the resin to reinforce the resin in the process of manufacturing the total denture as described later.

FIG. 2 is a flow chart illustrating a process of fabricating a total denture using a glass fiber light-cured resin reinforcement manufactured by the method of FIG. Referring to Figure 2,

[Reference picture 4]

First, as shown in (a) of the reference photograph 4, a edentulous model is produced from the final impression (step S200) and used for the record of relationship between upper and lower bones, the arrangement of artificial teeth, (Step S202), which is a provisional form replacing the denture, and records the relationship between the upper and lower jaws as shown in (c) and records the relationship between the upper and lower jaws on the temporary occlusal surface And the corresponding occlusion agent is prepared (step S204).

[Reference picture 5]

Next, a model is attached to the articulator (step S206) and an artificial tooth is arranged as shown in (b) (step S208) in order to reproduce the movement of the occlusal relationship as shown in (a) In addition, the occlusal relationship that has a great influence on esthetics and pronunciation is determined. Next, as shown in (c), the denture is sculpted (step S210), and the shape of the natural tissue covering the root is re-formed.

[Reference picture 6]

Next, as shown in the reference photograph (a), a denture base resin is put into a denture base resin by using a re-formed lead dent of a lead, And a space through which the resin can be transferred is formed through step S212. Next, as shown in Fig. 6B, a glass fiber photopolymerizable resin reinforcement is applied (step S214), and the resin is transferred to a space prepared beforehand so that the resin can be transferred into the cavity as shown in Fig. (Step S216).

[Reference picture 7]

After the thermal polymerization is complete, as shown in Fig. 7 (a), the implant is removed, the burr is removed, and the occlusal surface is selectively modified for bilateral occlusion as shown in (b) By grinding the surface (step S218), the total denture as shown in (c) is completed and the oral cavity can be visualized.

[Reference picture 8]

Figure 8 shows the process of tailoring glass fiber optically polymerized resin stiffeners to the patient's oral structure. 800 part corresponds to a glass fiber photopolymerization resin reinforcement lattice, 802 part corresponds to a stone model of an edentulous patient's mouth structure in which a glass fiber photopolymerization resin reinforcement rises, and 804 part corresponds to a glass fiber The 806 part corresponds to the model produced by injecting the thermal polymerization resin, and the 808 part corresponds to the model produced by injection of the thermal polymerization resin.

[Example 1]

1 millimeter of lattice spacing, 0.1 part by weight of an elastomer relative to 100 parts by weight of a light-cured resin,

[Example 2]

1 millimeter of lattice spacing, 0.1 part by weight of an elastomer based on 100 parts by weight of a light-cured resin,

[Example 3]

A lattice spacing of 0.7 mm, an elastomer in an amount of 1 part by weight based on 100 parts by weight of a light-cured resin,

[Example 4]

A lattice spacing of 0.7 mm, an elastomer in an amount of 1 part by weight based on 100 parts by weight of a light-cured resin,

[Comparative Example 1]

Lattice spacing 1 mm, light-cured resin 100 parts by weight, no elastomer, temperature of the resin was raised to 35 캜

[Comparative Example 2]

1 millimeter of lattice spacing, 100 parts by weight of light-cured resin, no elastomer, temperature of the resin was raised to 55 占 폚

[Comparative Example 3]

A lattice spacing of 0.7 mm, and an elastomer in an amount of 3 parts by weight based on 100 parts by weight of the light-cured resin,

The performance of the prepared glass fiber light - cured resin stiffener and the denture using the same were evaluated. Given that the lattice size of the glass fiber photopolymerizable resin reinforcement is 1.2 mm or more in general, it is visually evaluated whether the impregnation between the lattices is uniformly performed by reducing the interval to 1 mm. In the following table, no hole was found at all in the table, & cir & indicates that less than 5 fine holes were found, & cir & indicates that more than 5 fine holes were found or less than 3 holes were found, X indicates that more than 3 holes exceeding 1 mm are found, and a considerable number of holes are found. In addition, in the occurrence of cracks, no cracks were found in the case of ⊚, no cracks were found in the case of ◯, no cracks were found in less than 5 cases in the case of △, more than 5 cracks were found in the case of fine holes or less than 3 cracks exceeding 1 mm , X indicates that more than 3 cracks exceeding 1 millimeter are found, and a considerable number of holes are found.

Hole
Occur Cracking Condition I
(Good condition) Condition II
(General Conditions) Condition III
(Severe condition) Flexural strength
(MPa) Example 1 ○ ◎ ◎ ○ 104.05 Example 2 ○ ◎ ◎ ○ 107.07 Example 3 ○ ◎ ○ △ 102.65 Example 4 ◎ ◎ ○ △ 104.36 Comparative Example 1 × ◎ ◎ ○ 101.33 Comparative Example 2 △ ◎ ◎ ○ 102.72 Comparative Example 3 ◎ ○ △ × 105.65

Referring to Table 1, in Examples 1 and 2, it is excellent in the hole generation surface and is considerably superior in crack occurrence. However, in Examples 3 and 4, excellent results were obtained with no significant difference in terms of bending strength, and relatively good in terms of hole generation. However, cracks were not found under good conditions and general conditions in relation to durability, Cracks were found in more than 5 cracks or less than 3 cracks exceeding 1 millimeter. In Comparative Example 1 and Comparative Example 2 in which no elastomer was added to the photopolymerizable resin, holes were found. In Comparative Example 3 in which 3 parts by weight of the elastomer was added to 100 parts by weight of the photopolymerizable resin, no holes were generated, Cracks were found and cracking occurred in a severe condition.

Although not shown in Table 1, the flexural strength of the glass fiber with a mesh lattice spacing of 2 mm × 2 mm was evaluated. As a result, the flexural strength was 63.42 MPa, which is similar to that of the conventional denture only. And it plays a very important role in the flexural strength. Therefore, the examples and comparative examples in Table 1 were evaluated for the case of a 1-mesh mesh lattice.

In addition, in order to observe whether the dentures were dislocated during the vocal activity, it was monitored whether the dentures were in use or not. In the table below, ◎ indicates that no dropout occurs, ○ indicates that dropouts occur less than 3 times a month, and Δ indicates that dropouts occur more than 3 times a month.

Drop out Example 1 ○ Example 2 ○ Example 3 ◎ Example 4 ◎ Comparative Example 1 △ Comparative Example 2 △ Comparative Example 3 ○

Referring to Table 2, it can be confirmed that dropout occurred in less than 3 times a month in the case of Examples 1 and 2, but it can be confirmed that dropouts did not occur in Examples 3 and 4. As described above with reference to Table 1, when the elastomer as the vulcanization synthetic resin is added to the glass fiber photopolymerizable resin, the occurrence of cracks increases somewhat in view of the increase in the durability. However, since the glass fiber can be formed to be more compact, It was confirmed that the satisfaction of actual use was higher because the amount of resin was reduced and the weight was further reduced, thereby remarkably reducing the dropout phenomenon.

When the reinforcing material prepared by the method of manufacturing a glass fiber photopolymerizable resin reinforcement according to the present invention is inserted and inserted in the process of injecting the total denture resin, not only the fracture strength of the resin increases, but also the volume stability against shrinkage can be maintained. Particularly, according to the present invention, since the lattice size is 1 mm x 1 mm, that is, the square is formed, the shrinkage of the resin is uniformly carried out in the process of polymerization so that the defective factor is reduced and the shrinkage is minimized The advantage is that it can be used effectively.

Claims (3)

After making an impression in the oral cavity using an individual tray from the edentulous, the main model is made, and wax is used from the main model. After making the occlusal shape, the artificial teeth are arranged to manufacture lead teeth. Cementing after first burial, applying a gypsum separating agent to the first buried gypsum-cemented gypsum, secondly burrowing the gypsum, curing the bond between the upper and lower sides of the flask, curing the second buried After the hardening of the gypsum is completed, the plask is immersed in a water bath at 100 ° C to dissolve the wax in the occlusion, and then the upper and lower sides of the flask are separated. The glass fiber frame is cured by using the main mold Fixing the cured glass fiber frame to the top of the transferred resin after transferring the resin to the top and bottom of the flask, Applying a glass fiber light-cured resin reinforcement material comprising a step of pressing the glass fiber and the mixed resin after bonding the upper and lower glass fibers to each other and then polymerizing the glass fiber and the mixed resin, and completing the finishing after finishing and polishing, In the denture making method,
The step of fabricating the cured glass fiber frame using the master mold may include:
A step of attaching a wax sheet to the main mold, a step of punching a plurality of holes in the wax sheet, applying a resin separating agent to the perforated hole and filling the partial resin, Placing a main mold having the glass fiber therein in a vacuum state and pressing the main mold in a vacuum state, and curing the glass fiber in an apparatus equipped with a lamp, ; And immersing the master mold in which the glass fiber is hardened in a water bath of 100 DEG C to melt the wax sheet and then separating the hardened glass fiber from the master mold,
The mixed resin is formed by mixing 0.1 part by weight to 1 part by weight of an elastomer with respect to 100 parts by weight of a photopolymerizable resin,
Wherein the step of disposing the glass fibers in the mesh-
(a) disposing a grating such that a transverse chamber and a longitudinal chamber of the fiber yarn made of glass fibers have a lattice form and the interval of the lattice is set to 0.7 mm to 1.2 mm, but the square and the width are the same ,
The step of filling the partial resin comprises:
(b) preparing a mixed resin; And
(c) raising the temperature of the mixed resin prepared in the step (b) to 30 to 55 ° C. The method of claim 1, wherein the lattice spacing is 1 millimeter. A glass fiber light-cured resin reinforcement produced by the method of any one of claims 1 or 2.

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