JPS62500217A - dental crowns and bridges - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Titanium cum that can be welded inside the mouth Alloy dental crowns and bridges The present invention provides a dental crown made of titanium alloy that can be welded inside the mouth. and bridges. More specifically, the present invention provides 1 or 2 each for one side only or for both joining sides The presence of the tab also creates a micro-indentation on the medial lateral surface of the adjacent tooth. By having a groove, it is possible to perform easy and accurate melting work inside the mouth. Dental grade (8'kl and and bridges.

The present invention also provides a high titanium concentration alloy or Intraoral welding of cast or pressed dental crowns and bridges made of other alloys The present invention relates to a layered body bonding device for bonding a layered body, in which a molding member is provided at one end of the layered body bonding device 1a. and the molded part is made of gold, titanium, or other suitable metal. Designed to be firmly bonded to the crown component and its attachment device The medial lateral surface of the The layered structure of the connected dental crown members enables easy welding work within the mouth. There is.

The ability of dental crowns and bridges to withstand the stress generated by river loading. It must satisfy many mechanical characteristics such as force and hardness, and at the same time Crowns and bridges must have the necessary biocompatibility requirements This is well known. For this reason, various alloys have been used in dental supplies until now. I have always chosen and used gold because of its physical form.

That gold is very expensive (approximately 25,000 Italian lire per gram) It should also be noted that gold does not allow any electrical welding within the mouth. Ru.

Furthermore, making gold crowns and bridges requires the necessary strength guarantees. often of considerable size and on the surface of the sensitive area of the tooth (the so-called Strict adherence to the thickness is required.

Therefore, it is possible to conduct electric welding within the mouth while at the same time achieving the desired There is a need for materials used in dentistry that can provide biocompatibility and biological compatibility. It is clear that this is needed.

Therefore, according to the invention, resistance welding techniques that do not require protection with inert gases are provided. titanium-concentrated materials that are highly suitable and meet biocompatibility requirements. We propose titanium in the form of a high-grade aluminum and vanadium alloy.

The invention also provides tabs in which micro-indentations are carried on the surface designed for contacts. In order to obtain easy weldability in the mouth by introducing the structure of the crown of the tooth is disclosed.

Another object of the invention is to provide a high titanium concentration alloy that can be welded within the mouth. Or use a layered body joining member made of other alloys, and use gold crowns or other precious metals or Non-precious metal dentistry 1 Perform 1M welding work inside the mouth with a tooth crown made of a suitable metal. and that the joining member is applied to said crown, i.e. ) are designed to be joined together and then welded between themselves.

The present invention relates to connections realized by titanium-rich alloys or similar alloys. By preforming the laminated strips, the aforementioned requirements are met. flaky One end has a shaped element i:l, with a restrained or fixed joint It is rigidly connected to the crown element by screwing or by any other fastening method. crown key The base is made of gold or other suitable or base metal for teeth. Thin piece In addition, it may have one or more minute notches on its inner side surface.

With the crown or bridge according to the invention an optimal arrangement of the individual elements is obtained. . In other words, in the present invention, the bonding work is the final work of the dental cement. ■ Inserted in position 1, as a result, regarding the corresponding problem, This is because it overcomes any shortcomings that occur in The dental cement is supported separately and then the dental cement is welded into the oral cavity. This is because

Additionally, during very long recovery work (dental arches), one or more Removal of elements becomes easier.

In practice, destruction of aesthetic elements, cutting of structures, treatment and modification of teeth, bonding devices Welding and repair of only one aesthetic element can be performed satisfactorily. Wear.

Even the best dentists are concerned about destruction of aesthetic parts, destruction of structural parts (fracture of welded parts). damage) and partial loss of dental cement, which can save time and money. The possibility of working in the above-mentioned manner is unlikely due to the possible obstacles in terms of the associated burden. It should be noted that this is always important.

In particular, the cost of titanium alloys is completely negligible (approximately 1 Italian lira/9> Therefore, choosing titanium alloy has the greatest economic effect and In addition, bonding work within the oral cavity can be performed by using the titanium alloy. However, the bonding process can reduce dentist intervention and ultimately reduce production costs. i'1. It should be seen.

In addition, problems caused by a somewhat long bridge, such as gum recession, apical lesions, etc. In addition to making various dental surgeries easier when it comes to harm, the present invention It is also advantageously used in branch-plantation technology. Already Fixing the implantation to the central structure supported by dental cement This allows the implantation to be finalized during the surgical procedure. can be fixed to.

Thus, the special purpose of this invention is intraoral? 8 contacts and high titanium concentration Alloy-based dental crowns and bridges, the tooth elements being pre-pressed. machined or cast to imitate the shape of the tooth, and one tooth or two adjacent one side or both sides of the joint side with the two peaks, respectively. or a central cap or crown with two tabs and a A large number of minute indentations designed for coupling and bonded in the oral cavity. An object of the present invention is to provide a dental crown and a bridge.

Other objects of the invention +cL, dental crowns or is to provide a preformed flake joining device for welding bridges. This joining device is capable of welding in alloys with high titanium content or in the mouth. This flake can be made of gold or other metals suitable for dental use. It has an element formed to be rigidly connected to the round element at one end, and the adjacent To facilitate the welding operation in the mouth with the bonding lamina of the crown element of the abutting tooth. It is also possible to have one or more minute irregularities.

The alloy with a high titanium content mentioned above is preferably an alloy with a titanium content of 80 to 99.9%. Especially Grade 1-Grade 5 (ASTM-8265/348/337 ) are suitable.

Furthermore, the bonding flakes according to the present invention have a thickness of 0.2 to 4M, and the 0.8 order is Most desirable.

In a preferred embodiment of the invention, the formed element of the coupling device is a threaded main body. This is the case with bridges (dental bridges) and restorations. Suitable for Richmond crowns , the aforementioned shaped element is dovetail-shaped, or drop-shaped, or cylindrical. It is possible to have a shape with a hollow part, such as This allows a suitable mechanical connection with the crown element, which has been pre-drilled.

Furthermore, in various embodiments, a plurality of the above-mentioned minute irregularities are provided, and the gaps between them are Please note that the weldability of the tube has been further improved.

Furthermore, the mechanical properties of the titanium alloy mentioned above are suitable for dental use, as is clear from the table below. It should also be noted that it fully satisfies all requirements. In addition, the numbers in this table The values are identical to the properties of gold alloys commonly used in dentistry.

Titanium alloy gold Titanium alloy gold Grade 1 Grade 5 8) Hardness HB% 140. 65 310 188B) Maximum tensile stress 30~ 45 61 90-100 145 to 9 / rtus 2 C) Elastic strength 0.2% 20 20 85-89 103Kg/m2 0) Elongation, %25~30228~1o4 Also, compared to the case of using gold, this It is believed that similar characteristics can also be obtained in titanium alloys, although to a lesser extent, when working with teeth. It has the advantage of requiring less sanding and more white surfaces.

The invention is illustrated below by way of preferred embodiments thereof in the drawings.

FIG. 1 is a plan view of a crown element according to the present invention, and FIG. 2 is a plan view of the crown element according to the present invention. FIG. 3 is a plan view of the element of FIG. 1 welded together with a crown element according to the invention Figure 4 is a side view of the element of Figure 3 in the welded state; Figure 5 is a side view of the element of Figure 3 in the welded state; The figure is a side view of the first series of joint pieces according to the present invention, and FIG. 6 is the side view of the second series of joint pieces according to the present invention. 7 is a side view of the third joint piece according to the present invention, FIG. 8 is a side view of the piece, FIG. Side view of a series of crown elements welded to the elements of Figures 2 and 3. , and FIG. 9 shows the joining pieces according to the invention welded together by another combination. Figure 3 shows a side view of a dental bridge.

In Figure 1, the crown element is made of cup or crown 1 and is attached to the tooth. on one side or on both sides of one tab or two tabs 2 glued close to the teeth. be.

Additionally, micro-notches 3 are present on the inner lateral surface of the tab 2.

To simplify the drawing of the element of crown 1 on the tooth, the element is waveformed. (Figure 1).

In FIG. 2, the crown 1 is seen along the tab 2.

Figures 3 and 4 show crowns with tabs 2 and micro-notches 3 before and after welding work. 1 is shown.

FIG. 5 shows the joint pieces 4a, 4b, and 4C before and after the corresponding crown 6 is attached.

These joint pieces have a threaded body 5 at one end, and a female screw 7 is screwed into the threaded body. It is formed into a hollow body 6. According to this combination, the female thread 7 has a pre-formed recess. It can also be formed in the crown 6 by means of a screw or the like, for example, an already cast obtained by rotating the element.

In FIG. 6, another combination is shown, in which the joint pieces 8a, 8b and 8C are connected to the cylinder 9. It engages with the hole or the crown 10.

Joint pieces 11a, 11b and 11G provided on the crown 12 in FIG. It forms a tail-shaped element 13.

FIG. 8 shows a state in which the crown 14 is welded with the joining piece 15 of the present invention.

In FIG. 9, joint pieces 4C and 8a are welded together to form crowns 16 and 17. The connecting pieces 8a and 11C are also welded together, and the crown elements 16 and 11C are welded together. 18 is connected.

Although the invention is shown in specific embodiments, these may be modified and within the scope of the claims. Application is possible.

Ku) Addressed to Sein Kakashi , 1)- Mi 1 to 4 Procedural amendment (1 reference) March 10, 1986

Claims (9)

[Claims] 1. A lineup of dental crowns based on high titanium-concentrated alloys that can be welded to the oral cavity. In the pritzji, it is made to resemble the shape of the tooth by intensive casting or pre-pressing. a cap or crown, said cap comprising a tooth in said box or adjacent thereto; one or two taps corresponding to one or both of the adhesion surfaces, respectively; The inside surface of the tap has a minute notch designed to be connected and welded to the oral cavity. A dental crown and a dental crown, which are characterized by being provided with. 2. Welding dental crowns and privies made by casting or pressing in the oral cavity High titanium concentration that can be welded inside the oral cavity is used in the laminated joint that was previously made to A crown element made of gold or other metal suitable for dentistry, including a laminate made of an alloy. A molded element is provided at one end of the laminate, which is designed to be tightly connected to the laminate. A laminated joint characterized by. 3. In the laminated joint according to claim 2, the crown edge corresponding to the nearby tooth is The laminate for joining the element and the laminate for easy welding in the oral cavity. A laminated joint characterized by having one or more minute notches formed on the inner surface of the body. 4. In the laminated joint according to claim 2, the thickness of the joining laminate is 0. A laminated joint characterized by a thickness of 2 to 4 mm. 5. A laminated joint according to claim 2, wherein the molded element is a threaded joint. A laminated joint characterized by being made of a cylindrical body. 6. The laminated joint according to claim 2, wherein the molded element is formed of a cylindrical body. A laminated joint characterized by being made of a hollow part. 7. The laminated joint according to claim 2, wherein the molded element is a dovetail joint. A laminated joint characterized by being made from a material having the shape of. 8. In the dental crown and pritzge according to claim 1 or 2, , characterized in that the high titanium concentration alloy contains 80 to 99.9% titanium. Dental crowns and pritzges. 9. In the dental crown and pritzge according to claim 1 or 2, , a dental crown and a dental crown characterized by the presence of one or more of the minute notches. Ritsuji.