JPS5982849A - Dental implant for mounting artificial tooth - 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 The present invention relates to a dental implant for installing a denture.

Conventionally, dental implants are implanted in areas where a few or multiple teeth are missing, and this is used as the root of the tooth, and an artificial tooth is attached to the upper part - C1, which has already been applied clinically in many cases as a substitute for natural teeth. ing. In addition, metals such as titanium and cobalt-chromium-molybdenum alloys have been used as this type of implant abrasive materials, but recently, alumina ceramics have attracted attention for their excellent biomaterial properties and have come to be used more frequently. It's here. Among the methods for implanting dental implants, the method for implanting intraosseous implant 1- is as follows: First, the mucous membrane of tooth defect 11 is treated with rA+I.
After forming a groove or thread TL in the jaw 11' that corresponds to the shape of the implant, the common method is to implant the implant 1 and suture it.Other methods include implanting it in the tooth extraction hole. ing. (jl) These had the following problems.

(1) Although metals have sufficient mechanical strength, they are not compatible with humans because they are different from humans, and metals ionize and emit /8, causing harm to humans.

(2) Alumina ceramics are harmful to living organisms! l: No, but it is too hard compared to human bone and lacks affinity 411, so it creates creases during long-term use, and the jaw and (
hurt 1.

In order to eliminate the above-mentioned drawbacks, it is known to coat the surface of stainless steel with calcium scalate J8, but if it is possible to further increase the adhesion to the stainless steel and improve its compatibility with the living body, it will be possible to restore the tooth root. It has become clear that the safety of the beams is also improved.

The present invention was made to solve this problem, and includes a tooth root embedded in the bone and a tooth root that protrudes into the oral cavity through the gingival mucosa.
In the +i benefit injector having a tip, the tooth root includes a base made of a high-strength metal such as stainless steel or titanium, and a first base made of calcium phosphate glass or an oxide-phosphate frit of an alkaline earth metal on top of the base. A dental implant for denture attachment characterized by having a second coating layer made of a calcium phosphate salt on a mH base, and further increasing the adhesion area of a first base F'i1M made of bone tissue and Calcilla J phosphate glass. The present invention provides a dental implant for wearing dentures, in which the ceramic and glass coating layer has an uneven surface in order to improve adhesive strength.

Regarding the phosphate glass or salt mentioned here, the Ca/P atomic ratio is 1 as disclosed in JP-A-55-56052 "High strength calcium phosphate J, method for manufacturing sintered body".
．． 0.5 to 0.5 to 1.75% of the calcium phosphate component after firing into powder mainly composed of calcium phosphate.
A particularly strong one in which a calcium-phosphate frit having a Ca/P atomic ratio of 0.2 to 0.75 and 15% by weight is added and melted, or the J? 0.5 to calcium monate] 5jl? , oxides of alkali metals, zinc and/or alkaline earth metals - phosphoric acid-based furin 1 ~ gold-whitened (JP-A-55-14+17)
No. 56-r High Strength Calcium Phosphate Sintered Compact") or JP-A-55-EH+771 s4 r High Strength Calcilla Phosphate J, Sintered Compact" Finally, there is a sintered body formed by sintering calcyano-phosphoric acid frit, in which 3 to 23% A'I'l of °ζY2O3 is added as a reinforcing agent. These expansion coefficients 7 are preferably in the range of 90 to HiOX 10/'c.
It is a monate salt with an r' atomic ratio of 1.4 to 1.75'j, such as abacite gelup (hydroxyl albatite, fluorine albatite 1-) Il'l 6-water side norbatite 1
-ca,o(PO+)(,,(01()z.

1, Rikaru,・tsu11ノAsuso-r, l・Ca
(P 04) 2nd year, 2nd year. fj1) Those containing a large amount of phosphoric acid calcylano, ε, [, without being limited to this, generally referred to as S, Nishie Carnow J, as defined in the present invention-1) C batite ceraminoku (J) This shall include all items.

- To explain with reference to the drawings, A is the gingival mucosa, 1 is the Yamari innolent of the present invention, and the tooth root 11 is in the lower part of the gingival mucosa.
do. The tooth root 11 has a high-strength metal base 5 such as Ninokeruk 11 alloy stainless steel, cobalt-chromium-molybdenum alloy stainless steel, titanium, etc. in the center and 1-1) J4r (U Calcilla J glass or alkaline earth metal oxide). A first coating layer 2 made of a phosphoric acid group solinide is coated by a well-known method such as chemical deposition, physical deposition, solvent deposition, Glascow method, etc. Its surface is coated with the first coating layer 2. When the calcium salt in layer 3 is replaced by bone, it is textured or otherwise increased in surface area to increase its adhesion with the jaw bone. When the first layer is removed, it is bright.Next, a second layer of calcium phosphate salt is applied to the surface of the sera mink layer.
A bean layer is provided. To give one example of this specific method, 320 kg of Ca C0 and 28 kg of P20y were mixed and fired at 1300° C. for 2 hours to form a semi-molten state and produce a mixture of glass and crystals of calcium phosphate J8. The atomic ratio of Ca/P in this case is about 0.5. This is 11
1:5 no to 1 no! 40% of the particles are less than m.
151 (ii' Gino w.) Dissolve 1% of methylcell and add it to 762 water to 11"l +t L to make a flat (calcium slurry. Next, Nisogel-
LIJ the pitch 1 dragon head on the base 15 of the base of 2.5 φ x 25 IN II r with 1 com alloy stainless steel, above 1
? 4 Cups of calcium glass? Calcium phosphoric acid on the surface by firing at 700"C in the heat
NoJ Ino's first trap layer was created to create a 1st power inburan 1~.

Nao 3! ! 20-500μ in slurry of calcium chloride J1 salt.
If powders that disappear by combustion, such as m charcoal, "i' + J't) or Affinity of 1°1−
becomes much better. Apply this to chin r1 IM i:n-
In the case of injection, remove the gingival mucosa of the living body and make a hole 7 in the jawbone B that is suitable for Insilan 1 formation.
I +! ): Planting by entering J 47. ．．
31, -) of ogo -tc L, , j7i The denture T"?i lff, j ,
Glue by T I'l 4. In this way” (t
The calcium phosphate salt on the surface of the plant has an extremely high affinity for jaw printing, and the calcium phosphate JX salt is gradually replaced by -rtB 'l'l, but its use during the long 11 JJ period. Even after that, I have no idea that non-rotating oranges are harmful to living organisms as shown in Table 1. In addition, when the surface is uneven, the bone and the 3A calcium oxide glass layer are strongly bonded over a wide area and can withstand long-term use.

Please refer to the first page. Although the surface of the second coating layer is a threaded portion, the present invention [J] is not limited thereto.

Corrugation etc. may also be used or after ceramic vapor deposition,
After flame spraying, etc., the particle size of glass powder and flame temperature are adjusted appropriately to make the surface a porous layer.
'I and the ceramic surface become tightly bonded. Furthermore, coating methods such as JZi calcium oxide glass, calcium phosphate glass, and salt coating methods can also be used, such as chemical vapor deposition, physical vapor deposition, and other well-known methods.

[Brief explanation of the drawing]

The figure shows a part 1 (1) where the dental implant 1- of the present invention is implanted.
・(This is an Itli surface view. Δ...Gingival mucilage, B...Jaw surface, T...Denture, 1
...Dental implant, 11..1ft root, 2.
... first coating layer of calcium phosphate, 3... second coating layer of calcium phosphate avatar 1-, 4... adhesive, 5.
...Base-i: Continued correction? +1 (self-motivated) 11th call 1111th edition January 2nd and 111th submission 1978qIJ]
27th 1, Indication of the case 1982 Patent Application No. 19 '3061 2, Name of the invention Dental Implant for Dentures 3, Supplementary 1F Relationship with the 5 cases Patent Applicant Address Postal Code 467-91, 14-18-4, Takatsuji-cho, Mizuho-ku, Nagoya City, Mei♀III store subject to correction. Full text. 5.? lltMasashi Contents (Hawko Masanori 1st Son Particulars Publication I1 Name of Invention Dental Implant for Dentures 2, Scope of Claims (1) A tooth root part to be implanted in the propensity and a tip part that protrudes into the oral cavity through the gingival mucosa. In the tooth implant, the tooth root is made of a high-strength metal such as stainless steel or titanium, and an alkaline earth metal oxide is placed on the base.
A first coating layer made of phosphoric acid frit, and further 3A
A dental implant for wearing dentures, characterized in that it has a second coating layer made of an acid calcium salt. (2) Claim 1 in which the layer 5i1 has an uneven surface
1-0 (3) The alkaline earth metal of the first coating layer is Ca and the Ca/P atomic ratio is 0.2.
Teeth for wearing dentures according to claim 1 or 2, which has a particle diameter of 0.75! 1 Imbrandt. (4) Coating layer of calcium phosphate salt is 20 to 50
The dental implant for wearing a denture according to any one of claims 1 to 3, which has pores of 0 μm. (5) The Ca/P atomic ratio of the second coated 1'FFJP is 1.
．． 4 to 75, e.g. hydroxyapatite,
Fluorine avatar (apatite group such as 1. or 1-lycalcium phosphate)
The denture implant according to any one of paragraphs 4 and 4. (6) Place the root part of the tooth to be inserted into the pulp and the gingival mucus) 1 center. l
] It has a tip that protrudes into the oral cavity. IJ″＋
i'l' □Imbu, -St, the tooth root is made of stainless steel or titanium (i'l' is made of a strong metal, and the base is made of an alkaline earth metal such as zinc, aluminum, silicon, etc.) A first coated lure made of one or more oxide-phosphate frits selected from alkali metals and a second coated layer made of a calcium phosphate salt are coated on top of the first coated lua. (7) Dental implant 1-0 for prosthesis 1-1 described in item 6 of the scope of the patent application, in which the coating layer has an uneven surface. (
8) Coating layer of calcium phosphate salt 20-500, +
The dental implant for wearing a denture according to any one of claims 6 and 7, having pores of zm. (9) The Ca/P atomic ratio of the second overlayer is 1.4 to 1.
9. The dental implant for denture attachment according to any one of claims 6 to 8, wherein the phosphate is apatite group such as hydroxyapatite, fluoroapatite I.75, or tricalcium phosphate. 3. Detailed Description of the Invention The present invention relates to Ugetsu Inburan 1-, which is implanted for mounting dentures. Traditionally, dental implants have been implanted into areas where a small number of teeth or multiple teeth have been lost, and this has been used as a tooth root, with an artificial tooth attached to the upper part and used as a substitute for natural teeth. ing. In addition, metals such as titanium and cobalt-chromium-molybdenum alloys have been used as this type of implant material, but recently, alumina ceramics have attracted attention for their excellent bio+4 material properties and are being used more frequently.・It's done. Yuri: When implanting Insilan I, in particular, when implanting an implant within 1'I, first +'+: Mucosa of the i month defect. Peel off the l- corresponding to the shape of the implant.
After forming a 1 or LA hole in the jawbone, the general method is to place an implant at 411f and suture it.Other methods include implanting it into the 1 tooth hole. (jf L7
・These had the following problems. (1) Although metal has a mechanical strength of 1-minute, it is difficult to do without it because it is foreign to Jinshokichi, and it is also ionized and melts, making it harmful to living organisms.2) (2) Although alumina ceramics are not harmful to living organisms, they are much harder than human bones and have poor affinity for human bones.
When used for a long period of time, it will develop creases and damage the jaw joint at the adhesive part. In order to eliminate the above two drawbacks, it is known to pHm the surface of stainless steel with calcium phosphate, but if it is possible to further increase the adhesive strength with stainless steel and improve its compatibility with living organisms, it is possible to improve the recovery of tooth roots. It has become clear that it is faster and safer. The present invention has been made to solve this problem, and is an implant having a tooth root embedded in the bone and a tip protruding into the rZ] cavity through the gingival mucosa, in which the tooth root is made of stainless steel. Or rum oxide made of titanium-171
A dental implant for denture attachment characterized in that it has a first coating layer made of acid-based frit and a second coating layer made of calcium phosphate salt, and a second coating layer made of wound tissue and calcium phosphate glass. 1. Yuri Inblanc for Denture Wearing 1, in which the ceramic, resin, or glass coating layer has an uneven surface in order to increase the bonding area of the coating layer and improve the bonding strength.
It provides ~. Here, oxides of alkali metal 1 zinc, silicon 1 aluminum and/or alkaline earth metal forming the first coating layer -
Glass made of phosphoric acid frit has a thermal expansion coefficient close to that of the base material, stainless steel or titanium, and has an adhesive strength of 1Tli. Metals are essential components, including zinc and alkali metals. It may contain oxides of silicon and aluminum, and includes the composition of Friso I- disclosed by the applicant in JP-A-55-140756 ``High Strength Calcium Phosphate Sintered Body'' . Its characteristics are shown in Table 1. Regarding the calcium phosphate salt forming the second coating layer 1,
The C8/P atomic ratio disclosed in JP-A No. 55-56062 [Method for producing high-strength calcium phosphate sintered body] is 1.
, 4 to 1.75 Calcium phosphate after firing to a powder mainly composed of calcium phosphate, 0.5 to the component
~15% by weight Ca/I'' atomic ratio 0.2~(1,7
Addition and mixing of a calcium salt/phosphoric acid-based furiso 1 having 5 and a particularly strong melting surface, or 0.5 to 15% by weight of alkali, zinc and/or alkaline earth to the above calcium phosphate. Metal oxides containing phosphoric acid frits (JP-A-55-14075G “High-strength phosphoric acid-based sintered body”) or JP-A-55
Calcium salts disclosed in No. 5-1110771 [High strength) i, i-sintered calcium sintered bodies mainly composed of phosphates of A) and calcium, phosphate-based furiso 1
- Y2O as a reinforcing agent in a sintered body formed by sintering
The irO calcium salt is a phosphate containing 3 to 23% (F3), and the Cn/P ratio is 1.4 to 1.75. 1 fluoroapatite) especially hydroxyapatite Ca
to(P O4-) (, (OH) Z. Tricalcium phosphate is preferable. However, the calcium phosphate defined in the present invention is not limited to this, and any calcium phosphate containing a large amount of what is commonly called calcium phosphate can be used. This includes even what is called apatite ceramic.As explained below with reference to the drawings, Δ is the gingival mucosa, and 1 is the Ugetsu implant of the present invention, which has a tooth root 11 at the bottom. It consists of a high-strength metal substrate 5 such as a rust-free alloy, a cobalt-chromium-molybdenum alloy, a rust-free copper, or titanium, and its J. acid-based frit, a calcium acid glass, or an alkaline earth metal oxide. The first coating layer 2 is formed by chemical deposition, vapor deposition, or physical deposition. It is coated by a well-known method such as /8 irradiation or glass coating method. The surface of the second coating layer 3 contains lA acid calcium salt .[1
In order to increase the adhesion force with the jawbone 13 when replaced by the jawbone 13, it is preferable that it is textured or threaded, or that other measures are taken to increase the total surface area. Next, the surface of the seven ramic layers is covered with a second layer of phosphoric acid and salt.
F is provided. One example of this specific method is C
a Mix 320kg of C0 and 5-28kg of PzO! The atomic ratio of Ca/P in this case is about 0.5. 1
- Pulverized with a Rommel so that particles of 5 μm or less were 40%. This was added to water containing 1% methyl cellulose and stirred to form a slurry of calcium phosphate. Next, use nickel-chromium alloy stainless steel to apply a 1-pitch wire to the 15-piece base of the 2.5-diameter x 25-meter body.
A dental implant that is immersed in a slurry of calcium glass, dried + Bt, fired at 700°C, and has a first coating of Calcilla phosphate J1 on the surface. Sakushinoko. Next, commercially available average particles: Yio. 1 pm of hydroxyapatite is calcined at a temperature of 800 to 1100'c, pulverized to powder 15) with an average particle size of 3 to 4 μm, suspended in alcohol, and coated or dipped to form the first coating layer. - coated with ※shi, 4'iσ, β, 6~ in the air after drying.
By firing in the air at 1200°C for 45 minutes, it was possible to form a second coated layer of hydroxyapatite. In the above example, the first coating layer and the second coating layer were provided separately, but
By adjusting the C a / P atomic ratio of the first coating layer and making the baking temperature equal to that of the second coating waste, baking of the first coating layer and baking of the second coating layer are performed. You can also do both at the same time. If powders such as 20 to 500 μm of carbon powder or organic matter that are destroyed by combustion are mixed into the slurry of the calcium phosphate salt, the surface of the calcium phosphate salt will have pores of 20 to 500 μm in diameter, making it even more compatible with paper. becomes. When implanting this into the jawbone, the gingival mucosa of the living body is incised and peeled off, and a hole that matches the shape of the implant is drilled in the jawbone B. The tooth root of the implant (iXIL) is inserted into the hole. It is implanted by screwing in. The denture T is adhered to the implant product 1 implanted in this way with an adhesive 4. The implant implanted in this way is , has an extremely high affinity with the jawbone, and is gradually being replaced by calcium phosphate JX salt in some publications, but after long-term use (thornless steel is not harmful to living organisms. Also, if the surface is uneven, The bone and (7?) acidic lucium glass layer is firmly attached over a wide area and can withstand long-term use. , the present invention is not limited to this, and may be a vertical groove or a horizontal groove. Even if the surface is made into a porous layer, 11 and the ceramic surface will be tightly bonded.Furthermore, the coating method of calcium phosphate glass or calcium saponate salt can be applied by chemical vapor deposition, physical vapor deposition, etc.4. , a simple explanatory diagram of the drawing shows the part (, i
It is a IIJi side view.

Claims (1)

[Scope of Claim] (In a dental implant equipped with a +'Xi joint part inserted in the 11fl and extending into the oral cavity through the gingival mucosa and a tip part protruding into the oral cavity, the 1'fi root part is made of stainless steel. Alternatively, a base made of a high-strength metal such as titanium, a first coating W1 made of calcium phosphate glass or an oxide-phosphoric acid frit of an alkaline earth metal, and a second coating made of a calcium phosphate salt [Fi]. A dental implant for wearing dentures, characterized in that: (2) the covering scrap has an uneven surface; claim 1;
Teeth f'l implant for prosthetic mounting as described in Section 1. (3) Ca/P atomic ratio of the first coating layer 0.2 to 0.7
5. The Yuri implant for use in Yoshizumi 1 according to claim 1 or 2. (The ri layer covered by 4+ 3'A acid calcium salt is 20
The denture wearing implant according to any one of claims 1 to 3, which has pores of ~5001f.
．． 75. The dental implant for denture attachment according to any one of claims 1 to 4, wherein the phosphate is apatite group such as hydroxyapatite, fluoroapatite, or tricalcium tricalcium phosphate.