JPH0331288Y2 - - Google Patents
Info
- Publication number
- JPH0331288Y2 JPH0331288Y2 JP8231786U JP8231786U JPH0331288Y2 JP H0331288 Y2 JPH0331288 Y2 JP H0331288Y2 JP 8231786 U JP8231786 U JP 8231786U JP 8231786 U JP8231786 U JP 8231786U JP H0331288 Y2 JPH0331288 Y2 JP H0331288Y2
- Authority
- JP
- Japan
- Prior art keywords
- artificial tooth
- tooth root
- bone
- alveolar bone
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 210000000988 bone and bone Anatomy 0.000 claims description 20
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 9
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 9
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 238000007743 anodising Methods 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- MUJOIMFVNIBMKC-UHFFFAOYSA-N fludioxonil Chemical compound C=12OC(F)(F)OC2=CC=CC=1C1=CNC=C1C#N MUJOIMFVNIBMKC-UHFFFAOYSA-N 0.000 description 2
- 210000004373 mandible Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000008312 Tooth Loss Diseases 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000002449 bone cell Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004195 gingiva Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000002379 periodontal ligament Anatomy 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は歯科治療部門において老齢、災害及び
疾病などにより失なわれた天然歯の機能を再建す
るために用いられる人工歯根に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an artificial tooth root used in the dental treatment sector to restore the function of natural teeth that have been lost due to old age, disaster, disease, etc.
一般歯科医院において、老齢等により天然歯が
歯根ごと脱落した場合、歯槽骨内に人工歯根を植
立し、そのポスト部に人工歯冠を装着して歯の機
能を再建する治療法がしばしば行われるようにな
つてきた。この人工歯根は当初、ステンレス鋼、
コバルト−クロム合金等の耐食性合金で作られた
ものであつたため、金属素材の腐食反応によつて
溶出した金属イオンの毒性のため歯肉部の変色を
引き起こし、症例によつては人工歯根の脱落を起
こすものもあつた。そのため人工歯根療法は一時
かえりみられなくなつたが、生体親和性に優れ、
腐食も起こさず、高強度のサフアイア製人工歯根
が開発されて以来、歯科医療界において盛んに用
いられるようになつてきた。
In general dental clinics, when a natural tooth has fallen out along with its root due to old age, etc., a treatment method is often performed in which an artificial tooth root is planted in the alveolar bone and an artificial tooth crown is attached to the post to restore the function of the tooth. I've come to feel that way. This artificial tooth root was originally made of stainless steel,
Because it was made of a corrosion-resistant alloy such as a cobalt-chromium alloy, the toxicity of the metal ions eluted by the corrosive reaction of the metal material caused discoloration of the gums, and in some cases, the artificial tooth root could fall out. There were also things that could wake me up. For this reason, artificial tooth root therapy disappeared for a while, but it has excellent biocompatibility,
Since the development of artificial tooth roots made of sapphire that do not cause corrosion and have high strength, they have been widely used in the dental medical field.
〔考案が解決しようとする問題点〕
上記のサフアイヤ製人工歯根療法は優秀な治療
法ではあるが、単独植立ができないという問題点
を有している。即ち、一歯欠損の治療において、
人工歯根を植立した部位の左右の健全歯を削りブ
リツジをかけなければならなかつた。これはサフ
アイア製人工歯根においてその素材であるサフア
イアが生体不活性材料であるため、本質的に骨と
癒着しないことに起因する。すなわち骨と歯根の
間には繊維性結合組織が存在し、歯根膜に代わつ
て緩衝性を与え人工歯根機能を向上させているメ
リツトはあるが、反面単独植立においては不安定
性の原因となつていた。[Problems to be solved by the invention] Although the above-mentioned Saphia artificial tooth root therapy is an excellent treatment method, it has the problem that it cannot be planted alone. That is, in the treatment of single tooth loss,
The healthy teeth on either side of the area where the artificial tooth root was implanted had to be ground down and bridged. This is because saphire, which is the material of the saphire artificial tooth root, is a biologically inert material and therefore does not essentially fuse with the bone. In other words, fibrous connective tissue exists between the bone and the tooth root, which has the advantage of providing cushioning in place of the periodontal ligament and improving the function of the artificial tooth root, but on the other hand, it can cause instability when planted alone. was.
本考案は上述の単独植立の場合の問題点に鑑み
て開発されたものであつて、単独植立を可能なら
しめるため、大きな機械強度をもち、耐食性の最
も優れた純チタンもしくはチタン合金を素材と
し、ハイドロキシアパタイトをコーテイングし、
苛酷な口腔内の環境化においては前述の金属イオ
ンの溶出により歯肉の変色をおこすのを防ぐため
歯槽骨と接しない部分に黄金色の酸化チタンをコ
ーテイングして耐蝕性を向上させ、かつ歯肉部と
の色彩適合性、審美性をもたせたことを特徴とす
る。
This invention was developed in view of the above-mentioned problems with single-planting, and in order to make single-planting possible, pure titanium or titanium alloys, which have high mechanical strength and the highest corrosion resistance, are used. The material is coated with hydroxyapatite,
In order to prevent discoloration of the gingiva due to the elution of metal ions mentioned above in the harsh oral cavity environment, golden titanium oxide is coated on the areas that do not contact the alveolar bone to improve corrosion resistance and improve the gingival area. It is characterized by its color compatibility and aesthetics.
（実施例 １）
第１図に示した形状の人工歯根１はチタン又は
チタン合金を鋳造もしくは切削加工して所定の歯
根形状に成形した後、該人工歯根１における下半
分の歯槽骨内埋入部２にはネジ２ａが刻設されて
おり、このネジ２ａの表面にはスパッタリング法
によりヒドロキシアパタイト被覆２ｂが被着され
る。この場合、被着されるヒドロキシアパタイト
被膜２ｂの膜厚としては、５〜100μｍ程度が適
当である。すなわち、5μｍ以下ではヒドロキシ
アパタイト被膜を被着させめたことによる骨との
接合特性、安定性において顕著な改善が認められ
なかつた。
(Example 1) The artificial tooth root 1 having the shape shown in FIG. 1 is formed by casting or cutting titanium or titanium alloy into a predetermined tooth root shape, and then inserting the lower half of the artificial tooth root 1 into the alveolar bone. A screw 2a is cut into the screw 2, and a hydroxyapatite coating 2b is applied to the surface of the screw 2a by sputtering. In this case, the appropriate thickness of the hydroxyapatite film 2b to be deposited is about 5 to 100 μm. That is, when the thickness was 5 μm or less, no significant improvement was observed in the bonding characteristics and stability with bone due to the attachment of the hydroxyapatite film.
また膜厚が100μｍ以上にあつては、ヒドロキ
シアパタイト被膜２ｂを被着せしめるスパツタリ
ング法など被着工程における時間、原料などを多
く要するため、コスト高となるだけでなく被着せ
しめた人工歯根１から剥離し易い傾向がみられ
た。 In addition, if the film thickness is 100 μm or more, a lot of time and raw materials are required in the deposition process such as the sputtering method to deposit the hydroxyapatite coating 2b, which not only increases costs but also prevents the artificial tooth root 1 from being coated. A tendency to peel off easily was observed.
また、この人工歯根１のポスト部３には、陽極
酸化法によつて酸化チタン（TiO2）膜３ａを厚
さ1000〜5000Åに形成するが、この膜厚を調整す
ることによつてポスト部３の色彩を例えば歯肉Ｃ
の色に近似した異和感のないものとすることがで
きる。 In addition, a titanium oxide (TiO 2 ) film 3a is formed on the post portion 3 of the artificial tooth root 1 to a thickness of 1000 to 5000 Å by anodizing. For example, the color of 3 is gingival C.
It is possible to make the color similar to the one without any discomfort.
次に、50μｍの膜厚にヒドロキシアパタイト被
膜２ｂを被着した人工歯根１を第２図の模式図に
示すようにサルの下顎骨Ａに埋入しておき、約２
ケ月後、ポスト部３に単独の上部構造Ｂを装着し
た。 Next, the artificial tooth root 1 coated with the hydroxyapatite coating 2b with a thickness of 50 μm is implanted into the mandible bone A of the monkey as shown in the schematic diagram of FIG.
After several months, the independent upper structure B was attached to the post section 3.
この装着状態において人工歯根１は下顎骨Ａに
強固に固定されており、インプラント後、１年経
つた時点においても緩みやガタツキの発生はな
く、単独植立での使用にも充分耐えている。しか
も歯肉部の炎症もなく美麗な歯茎となつていた。 In this installed state, the artificial tooth root 1 is firmly fixed to the mandibular bone A, and even one year after the implantation, there is no loosening or rattling, and the artificial tooth root 1 is sufficiently durable even when used alone. What's more, her gums were beautiful and had no inflammation.
（実施例 ２）
上記実施例１と同様にしてチタン合金でもつて
第３図に分解図を示すように埋入型の人工歯根１
０を製作した。(Example 2) In the same manner as in Example 1 above, an implantable artificial tooth root 1 was made of titanium alloy as shown in the exploded view in Fig. 3.
I made 0.
この人工歯根１０は歯槽骨内埋入部２０とポス
ト部３０とはネジ結合されるようになつており、
歯槽骨内埋入部２０、ポスト部３０には実施例１
と同様、それぞれヒドロキシアパタイト被膜２０
ｂ、酸化チタン膜３０ａが被着形成してある。 In this artificial tooth root 10, the alveolar bone embedded part 20 and the post part 30 are screwed together,
Example 1 is used for the alveolar bone embedded part 20 and the post part 30.
Similarly, hydroxyapatite coating 20
b, a titanium oxide film 30a is deposited.
次に、このような人工歯根１０の歯槽骨内埋入
部２０を雑種成犬下顎の左右に各２本ずつ埋入し
ておき、約３ケ月後にポスト部３０を螺入結合
し、さらに１週間後、歯肉部の治癒を待つて各々
単独に上部構造を装着した。補綴完了後１ケ月毎
に人工歯根１０の緩み、ガタツキなどの発生の有
無をチエツクしたが、１年半を経て異常は認めら
れなかつた。 Next, two implanted parts 20 of the artificial tooth root 10 in the alveolar bone are implanted in each of the left and right sides of the mandible of an adult mongrel dog, and after about 3 months, the post part 30 is screwed together, and then the implanted parts 20 are left in the alveolar bone for another week. After waiting for the gingival area to heal, the upper structure was attached to each patient individually. The artificial tooth root 10 was checked every month after the prosthesis was completed for loosening, rattling, etc., but no abnormalities were found after one and a half years.
その後、成犬を屠殺し、人工歯根１０を含む部
位の骨を切り出し、ホルマリン固定後樹脂包埋
し、切片にして光学顕微鏡にて観察したところ、
歯槽骨内埋入部２０は成熟した骨細胞に包囲さ
れ、骨組織が直ちに結合していることが視認され
た。また、歯肉と接する部位では溶出金属イオン
の毒性などに起因する変質した細胞等は見られな
かつた。 Thereafter, the adult dog was sacrificed, and the bone containing the artificial tooth root 10 was cut out, fixed in formalin, embedded in resin, sectioned, and observed under an optical microscope.
It was visually confirmed that the implanted part 20 in the alveolar bone was surrounded by mature bone cells, and the bone tissue was immediately connected. In addition, no altered cells caused by the toxicity of eluted metal ions were observed in the area in contact with the gums.
叙上のように、本考案によれば、チタン又はチ
タン合金から成る歯槽骨内埋入部表面にヒドロキ
シアパタイト被膜を被着し、ポスト部には陽極酸
化により酸化チタン膜を形成して人工歯根を構成
したことから、骨への固定安定性に富み、一歯欠
損の患者の他の健全歯を損なうことなく歯旡の修
復を完全ならしめるなど人類福祉に寄与すること
ができる。
As described above, according to the present invention, a hydroxyapatite film is applied to the surface of the part made of titanium or a titanium alloy implanted in the alveolar bone, and a titanium oxide film is formed on the post part by anodizing to form an artificial tooth root. Because of this structure, it has excellent fixation stability to the bone, and can contribute to human welfare by completely repairing a dental cavity without damaging the other healthy teeth of a patient with a missing tooth.
第１図は本考案実施例による人工歯根の側面
図、第２図は本考案に係る人工歯根を歯槽骨に植
立し上部構造を装着した状態を説明するための断
面図、第３図は本考案による他の実施例に係る人
工歯根の分解破断面図である。
１，１０……人工歯根、２，２０……歯槽骨内
埋入部、３，３０……ポスト部。
Fig. 1 is a side view of an artificial tooth root according to an embodiment of the present invention, Fig. 2 is a sectional view illustrating a state in which the artificial tooth root according to the present invention is implanted in alveolar bone and a superstructure is attached. FIG. 3 is an exploded cross-sectional view of an artificial tooth root according to another embodiment of the present invention. 1, 10... Artificial tooth root, 2, 20... Alveolar bone embedded part, 3, 30... Post part.
Claims (1)
根の歯槽骨と接する表面にハイドロキシアパタイ
ト被膜が被着され、かつ歯槽骨と接する部分以外
の表面が酸化チタン膜で被覆されていることを特
徴とする人工歯根。 An artificial tooth root formed of pure titanium or a titanium alloy, wherein the surface in contact with the alveolar bone is coated with a hydroxyapatite film, and the surface other than the part in contact with the alveolar bone is coated with a titanium oxide film. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8231786U JPH0331288Y2 (en) | 1986-05-29 | 1986-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8231786U JPH0331288Y2 (en) | 1986-05-29 | 1986-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62192717U JPS62192717U (en) | 1987-12-08 |
| JPH0331288Y2 true JPH0331288Y2 (en) | 1991-07-03 |
Family
ID=30934860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8231786U Expired JPH0331288Y2 (en) | 1986-05-29 | 1986-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0331288Y2 (en) |
-
1986
- 1986-05-29 JP JP8231786U patent/JPH0331288Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62192717U (en) | 1987-12-08 |
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