JPH0450824B2 - - Google Patents
Info
- Publication number
- JPH0450824B2 JPH0450824B2 JP1101208A JP10120889A JPH0450824B2 JP H0450824 B2 JPH0450824 B2 JP H0450824B2 JP 1101208 A JP1101208 A JP 1101208A JP 10120889 A JP10120889 A JP 10120889A JP H0450824 B2 JPH0450824 B2 JP H0450824B2
- Authority
- JP
- Japan
- Prior art keywords
- implant
- tooth
- chitin
- socket
- tooth extraction
- 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 - Lifetime
Links
- 229920002101 Chitin Polymers 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004053 dental implant Substances 0.000 claims description 4
- 239000007943 implant Substances 0.000 description 41
- 238000000605 extraction Methods 0.000 description 37
- 210000002379 periodontal ligament Anatomy 0.000 description 20
- 210000000988 bone and bone Anatomy 0.000 description 18
- 210000001519 tissue Anatomy 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 206010052428 Wound Diseases 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 231100000241 scar Toxicity 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 241000238424 Crustacea Species 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052586 apatite Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[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 VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 2
- 230000003239 periodontal effect Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 210000003456 pulmonary alveoli Anatomy 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 208000035943 Aphagia Diseases 0.000 description 1
- 241000238421 Arthropoda Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- DUKURNFHYQXCJG-UHFFFAOYSA-N Lewis A pentasaccharide Natural products OC1C(O)C(O)C(C)OC1OC1C(OC2C(C(O)C(O)C(CO)O2)O)C(NC(C)=O)C(OC2C(C(OC3C(OC(O)C(O)C3O)CO)OC(CO)C2O)O)OC1CO DUKURNFHYQXCJG-UHFFFAOYSA-N 0.000 description 1
- OVRNDRQMDRJTHS-FMDGEEDCSA-N N-acetyl-beta-D-glucosamine Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-FMDGEEDCSA-N 0.000 description 1
- 208000012868 Overgrowth Diseases 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000000890 antigenic effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 210000004283 incisor Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 210000001847 jaw Anatomy 0.000 description 1
- 230000006996 mental state Effects 0.000 description 1
- 229950006780 n-acetylglucosamine Drugs 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Chemical class 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0036—Tooth replica
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は抜歯跡に適用される歯科インプラント
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dental implant applied to a tooth extraction scar.
（従来の技術）
従来抜歯後の処置は、抜歯跡を暫時放置し、抜
歯創の治癒を待つて義歯を植立する手術を行つて
いた。具体的に述べると、抜歯跡は窩状になつて
おり、当初血餅で填塞されているが、次第に歯槽
骨が成長して歯槽窩を埋めるので、歯槽窩が歯槽
骨で填塞されるのを待つて、歯槽窩を埋めた歯槽
骨に金属の（インプラント）台を穿孔植立し、こ
の金属台に義歯を固定すると云う方法が用いられ
ていた。このような方法によると、患者は抜歯時
の苦痛に加え、当分の間抜歯創が露出した状態で
咀嚼にも不安を覚え、食事が安心してできない精
神状態を強いられ、その後義歯装着のための再手
術の苦痛を味わうと云うことになる。このような
方法に対して、抜歯跡に天然歯例えば患者本人の
歯を移植すると云うことも可能であるが、歯の生
着は一時的で、通常は次第に歯槽骨が移植した歯
の歯根部を蚕蝕して成長し、歯槽窩を埋め、移植
歯は歯根を失つて脱落する。従つて結局は人工歯
の植立手術を行わなければならない。このため患
者に与える苦痛が少く、後日脱落、再手術と云う
ようなことが起こらないインプラント術が種々研
究されており、その一つとして生体になじみの良
いセラミツク例えばアパタイトセラミツク［ヒド
ロキシアパタイト、Ca10（PO4）6（OH）2］でイン
プラントを形成し、抜歯窩に埋込む方法が提案さ
れているが、このインプラントはセラミツクであ
るため硬質で、個々の抜歯窩の形状に適合した形
に成形することは不可能であり、インプラント埋
入後、歯槽窩との隙間が生体側組織によつて填塞
されるまで相当の期間咬合力を作用させないよう
に養生することが必要で、患者にとつてかなり不
便を強いることになる。(Prior Art) Conventionally, the treatment after a tooth extraction is to leave the tooth extraction scar for a while, wait for the tooth extraction wound to heal, and then perform a surgery to implant a denture. To be more specific, the tooth extraction scar is shaped like a fossa, which is initially filled with blood clot, but as the alveolar bone gradually grows and fills the alveolar fossa, it is difficult for the alveolar fossa to become filled with alveolar bone. A method was used in which a metal (implant) base was then drilled into the alveolar bone that filled the alveolar socket, and the denture was fixed to this metal base. With this method, in addition to the pain of the tooth extraction, the patient is also worried about chewing with the tooth extraction wound exposed for the time being, and is forced into a mental state in which he is unable to eat with peace of mind. This means that he will have to experience the pain of having to undergo surgery again. In response to this method, it is possible to transplant a natural tooth, such as the patient's own tooth, into the tooth extraction site, but the survival of the tooth is temporary, and usually the alveolar bone gradually grows at the root of the transplanted tooth. The tooth grows by eroding the tooth, fills the alveolar socket, and the transplanted tooth loses its root and falls out. Therefore, in the end, surgery to implant artificial teeth must be performed. For this reason, various implant techniques are being studied that cause less pain to the patient and do not cause dislodgement or reoperation at a later date. A method has been proposed in which an implant is formed using (PO 4 ) 6 (OH) 2 ) and placed in the tooth extraction socket, but since this implant is made of ceramic, it is hard and cannot be shaped to fit the shape of each individual extraction socket. It is impossible to mold the implant, and after implant placement, it is necessary to cure the patient so that no occlusal force is applied for a considerable period of time until the gap between the implant and the alveolar socket is filled with living tissue. This will cause considerable inconvenience.
（発明が解決しようとする課題）
本発明は抜歯患者に苦痛と不便を強いることの
きわめて少いインプラントを提供しようとするも
のである。(Problems to be Solved by the Invention) The present invention aims to provide an implant that causes extremely little pain and inconvenience to patients undergoing tooth extraction.
（課題を解決するための手段）
金属或は他の適当な硬質材料よりなる芯体を埋
設されたキチン質よりなる歯根形状のインプラン
トを提供する。(Means for Solving the Problems) A root-shaped implant made of chitin and having a core made of metal or other suitable hard material embedded therein is provided.
（作用）
キチン質は節足動物の外骨格の主成分をなす多
糖類で、工業的には甲殻類の殻から抽出生産され
ている。アセチルグルコサミンのβ−1.4結合に
よるポリマーでセルローズに似た繊維状物質であ
り、生体内にはこれを分解する酵素が存在してい
る。このキチン質によつて歯根形状のインプラン
トを作ると、セラミツクと異り弾性と形状順応性
があるので、特別に個々の抜歯窩の形に合せなく
ても抜歯窩へ挿入することにより形を抜歯窩にな
じませることができる。キチン質は生体に対して
抗原性がなく拒絶反応が起らない特徴を有し、生
体組織との初期親和性が良いから抜歯窩内によく
納まり抜歯窩を保護する。またキチン質には殺菌
作用が認められ抜歯窩の感染症を予防する効果も
あり、従つてキチン質のインプラントは抜歯窩に
挿入した後は炎症を併発するようなことなく速か
に抜歯窩に生着する。故に抜歯後の患者に殆んど
苦痛を与えず、セラミツクのような硬質材料のイ
ンプラントを挿入した場合のような生着までの養
生期間を必要とせず、日常生活への不便が少い。
キチン質のインプラントは早期に抜歯窩に生着す
るが、その後の経過は抜歯窩に歯根膜が残つてい
る場合と歯根膜が残らず、歯槽骨が露出している
場合とで異なる。(Action) Chitin is a polysaccharide that forms the main component of the exoskeleton of arthropods, and is industrially extracted and produced from the shells of crustaceans. It is a polymer made of β-1.4 bonds of acetylglucosamine and is a fibrous substance similar to cellulose, and enzymes exist in living organisms to break it down. When a tooth root-shaped implant is made of chitin, unlike ceramic, it has elasticity and shape conformability, so it can be inserted into the tooth extraction socket and the shape can be adjusted without having to specifically match the shape of each tooth extraction socket. It can be applied to the socket. Chitin has the characteristic of not being antigenic to living organisms and causing no rejection reaction, and has good initial affinity with living tissues, so it fits well in the tooth extraction socket and protects the tooth extraction socket. In addition, chitin has a bactericidal effect and is effective in preventing infections in tooth extraction sockets. Therefore, after a chitinous implant is inserted into a tooth extraction socket, it quickly returns to the socket without complications of inflammation. Survives. Therefore, it causes almost no pain to the patient after tooth extraction, does not require a curing period until implantation takes place, unlike when inserting an implant made of a hard material such as ceramic, and is less inconvenient to daily life.
Chitinous implants quickly settle into the extraction socket, but the subsequent course differs depending on whether periodontal ligament remains in the extraction socket or when no periodontal ligament remains and alveolar bone is exposed.
歯根膜が残つている場合、歯根膜からキチン分
解酵素が分泌され、キチン質のインプラントは次
第に歯根膜に吸収され、歯根膜が成長して行く。
キチン質インプラント内には硬質材料の芯体が予
め埋設してあるから、キチン質が吸収された後は
上記芯体が歯根膜に埋込まれた状態で歯槽窩内に
固定される。従つて上記芯体を支台歯として義歯
を植立すればよい。 If the periodontal ligament remains, chitin-degrading enzymes are secreted from the periodontal ligament, the chitinous implant is gradually absorbed into the periodontal ligament, and the periodontal ligament grows.
Since a core body made of a hard material is embedded in the chitin implant in advance, after the chitin is absorbed, the core body is fixed in the alveolar socket while being embedded in the periodontal ligament. Therefore, a denture may be implanted using the core as an abutment tooth.
歯根膜が残つていない場合、キチン質のインプ
ラントは歯槽骨によつて吸収され、歯槽骨が成長
して歯槽窩はキチン質から歯槽骨に置換される。
キチン質インプラントには硬質材の芯体が埋設し
てあるから、この芯体が歯槽窩を填塞する骨内に
埋設されることになる。従つてその後芯体を支台
歯として義歯を植立すればよい。 If no periodontal ligament remains, the chitinous implant is resorbed by the alveolar bone, which grows and replaces the chitinous tissue with alveolar bone in the alveolar fossa.
Since the chitinous implant has a hard material core embedded therein, this core is embedded in the bone that fills the alveolar socket. Therefore, a denture can then be implanted using the core as an abutment tooth.
（実施例）
第１図は抜歯跡に歯根膜が残つている場合に適
用されるキチン質インプラントの一例である。１
はキチン質よりなる本体部で２は硬質芯体であ
る。硬質芯体２はアパタイトセラミツクでも、白
金、チタン等の金属でも生体によくなじむ材質で
あればよい。芯体２は中心にねじ孔２１が穿つて
あり、予めボルト３を螺入してこのねじ孔は塞い
である。(Example) Fig. 1 is an example of a chitinous implant that is applied when periodontal ligament remains in a tooth extraction site. 1
2 is a main body made of chitin, and 2 is a hard core. The hard core body 2 may be made of apatite ceramic or metal such as platinum or titanium as long as it is compatible with living organisms. A screw hole 21 is bored in the center of the core body 2, and this screw hole is closed by screwing a bolt 3 in advance.
第２図は上述インプラントを適用した状態の初
期を示す。Ｂは歯槽骨で、歯槽内面に歯根膜Ｒが
存在している。上述インプラントを歯槽内に挿入
後、歯周組織Ｍとインプラントのキチン質本体部
との間を適当に縫合Ｓしておく。インプラント上
面は歯槽窩の緑と略々同高か、それより稍々突出
する程度とする。従つて咬合力は両側の残存歯に
よつて受持たれ、対向歯が直接インプラントに当
ることはない。ボルト３はこの状態でねじ孔２１
に異物が侵入しないようにするものである。第３
図は抜歯後相当基間（１〜３ケ月）経過後で、キ
チン質１の部分は歯根膜Ｒによつて置換され、歯
根膜内に芯体２が埋入保持されている状態となつ
ている。この状態になつたときボルト３を抜き、
代りに義歯支持用ボルト４を芯体２のねじ孔２１
に螺入し、同ボルトの上部に義歯Ｔを取付け固定
する。以上で抜歯と治療が完了することになる。 FIG. 2 shows the initial state in which the above-mentioned implant is applied. B is the alveolar bone, and the periodontal ligament R exists on the inner surface of the alveolus. After inserting the above-mentioned implant into the alveolus, the periodontal tissue M and the chitinous body of the implant are appropriately sutured S. The upper surface of the implant should be approximately at the same level as the green of the alveolar fossa, or slightly protrude from it. Therefore, the occlusal force is carried by the remaining teeth on both sides, and the opposing teeth do not directly contact the implant. The bolt 3 is inserted into the screw hole 21 in this state.
This is to prevent foreign matter from entering. Third
The figure shows that after a considerable period of time (1 to 3 months) has passed after tooth extraction, the chitin 1 part has been replaced by the periodontal ligament R, and the core body 2 is embedded and retained within the periodontal ligament. There is. When this state is reached, remove bolt 3 and
Instead, insert the denture support bolt 4 into the screw hole 21 of the core body 2.
Screw into the denture T and secure it by attaching the denture T to the top of the same bolt. This completes the tooth extraction and treatment.
歯根膜が残つている場合のキチン質インプラン
トは中の芯体２の本来の歯根と同様歯根膜に包ま
れ、歯槽骨に結合されて、義歯根となるものであ
る。従つて歯根膜が歯のクツシヨンとして適当で
あり、厚すぎて義歯が揺らぐことがないような厚
さに成長するのが望ましく従ってキチン質の本体
部１は実際上薄くて、芯体２が大きく、本体部は
芯体２を覆うキチン質層の観を呈するものとな
る。 When the periodontal ligament remains, the chitinous implant is surrounded by the periodontal ligament, similar to the original tooth root of the core body 2, and is bonded to the alveolar bone to become a denture root. Therefore, it is desirable for the periodontal ligament to grow to a thickness that is suitable as a cushion for the teeth and prevents the denture from shaking. Therefore, the chitinous main body 1 is actually thin and the core body 2 is large. , the main body portion has the appearance of a chitinous layer covering the core body 2.
第４図は抜歯後に歯根膜が残つていない場合に
適用される実施例を示す。この実施例は臼歯用の
ものであるが、切歯用も同様であり、外観が第１
図のものと同じなるだけである。１はキチン質の
本体部で、２が硬質材料の芯体で、白金或はチタ
ンとう金属であり、前例と異り、芯体は細くて枠
状をなし、上面は平坦にしてキチン質本体の１の
上面に露出してキチン質本体１を覆つている。第
５図はこのインプラントを抜歯窩に植入した直後
の状態を示す。この場合歯根膜はなく、キチン質
本体１が直接歯槽骨に接している。キチン質本体
は弾性と或る程度の変形能を備えているので歯槽
窩への圧入によつてキチン質本体と歯槽骨とは密
着する。歯周組織とチキン質本体１との間は適当
に縫合しておく。第６図は抜歯後相当期間経過後
の状態で、キチン質本体１の部分は歯槽骨に吸収
され、歯槽窩は歯槽骨で填塞されて歯槽骨内に芯
体２が埋設された状態となつている。この状態に
なつたとき、芯体２の上面露出部を台として義歯
を植立する。 FIG. 4 shows an embodiment applied when no periodontal ligament remains after tooth extraction. This example is for molar teeth, but the same applies to incisors, and the appearance is the first.
It's just the same as the one in the picture. 1 is the main body made of chitin, and 2 is the core made of hard material, which is made of platinum or titanium metal.Unlike the previous example, the core is thin and has a frame shape, and the top surface is flat, making it a chitin body. It is exposed on the upper surface of the chitinous body 1 and covers the chitinous body 1. FIG. 5 shows the state immediately after this implant is placed in the tooth extraction socket. In this case, there is no periodontal ligament, and the chitinous body 1 is in direct contact with the alveolar bone. Since the chitinous body has elasticity and a certain degree of deformability, the chitinous body and the alveolar bone are brought into close contact by being press-fitted into the alveolar socket. The periodontal tissue and the chicken substance body 1 are sutured appropriately. Figure 6 shows the state after a considerable period of time has passed after tooth extraction, with the chitin body 1 being absorbed into the alveolar bone, the alveolar socket being filled with alveolar bone, and the core body 2 being embedded within the alveolar bone. ing. When this state is reached, the denture is implanted using the upper surface exposed portion of the core body 2 as a base.
上述第１図の例を適用するか第４図の例を適用
するかは抜歯窩の状況によるもので、術者の判断
に従う。実際上抜歯窩は血液で充満しており、何
れの型を適用する場合でも、インプラント挿入後
暫くの間は血餅が接着剤となつて歯槽窩にインプ
ラントが固定されおり、その後次第に歯根膜或は
歯槽骨が成長して来ることになる。 Whether the example shown in FIG. 1 or the example shown in FIG. 4 is applied depends on the situation of the tooth extraction socket and is at the discretion of the operator. In fact, the upper extraction socket is filled with blood, and no matter which type of implant is used, the blood clot acts as an adhesive to fix the implant in the alveolar socket for a while after the implant is inserted, and then the periodontal ligament or The alveolar bone will grow.
キチン質は甲殻類の殻から抽出され、大量に生
産されていて比較的安価な素材である。これをイ
ンプラントに成型するにはアルギン酸のような粘
着剤を混ぜて可塑体にし、適当な形に成形する。
前述したようにこのインプラントはセラミツクと
異り形状順応生があるから、抜歯を型取りして成
型すると云うような必要はなく、予め種々な形
状、サイズのものを用意しておいて、術者がその
場で選択適用すればよい。 Chitin is extracted from the shells of crustaceans, is produced in large quantities, and is a relatively inexpensive material. To mold this into an implant, it is mixed with an adhesive such as alginic acid to make it into a plastic material, and then molded into an appropriate shape.
As mentioned above, unlike ceramic implants, these implants conform to their shape, so there is no need to take a mold of an extracted tooth and mold them. can be selected and applied on the spot.
（発明の効果）
本発明のインプラントは生体組織と直接接触す
る部分がキチン質であり、キチン質は生体物質で
しかも抗原性がないので生体組織となじみが良く
拒絶反応が起らず、かつ或る程度の殺歯作用もあ
るので、抜歯直後に抜歯窩に挿入したとき、以後
の経過はきわめて良好で患者は全く苦痛を受け
ず、抜歯跡は抜歯直後から実際上抜歯創治癒と同
じ状態になる。この点従来の抜歯後開放状態で抜
歯創の治癒を待つ方法に比し、患者の苦痛は著る
しく軽減される。キチン質はその後本来の生体組
織に置換され、芯体が生体組織内に埋入されて、
芯体が歯槽内に生着状態で保持されているので、
これを支台歯として装着された義歯は顎に強固に
装着されることになり、しかも生理的に無理がな
いから、患者は種々な後遺症に悩まされることが
ない。また抜歯窩にアパタイトセラミツクのよう
な硬質インプラントを適用するのと異り、歯根膜
が残つている場合でも、残つていない場合でも適
用でき、硬質インプラントの場合、歯槽骨とイン
プラントの隙間を埋める組織の成長中の外力が加
わると、折角成長しかけた組織を再び傷つけ、イ
ンプラントの生着をおくれさせ或は組織の過剰生
長を招いてインプラントが浮上してしまうと云う
ようなことがあつて、インプラントが完全に生着
するまで外力が加わらないように細心の注意が必
要であるため患者は相当の不便を感じねばならな
いが、キチン質インプラントは軟質であるから、
外力の作用で抜歯創を再損傷することがなく、抜
歯後外力の加わることを格別回避する必要がない
から患者が感じる不便が少い。(Effects of the Invention) The part of the implant of the present invention that comes into direct contact with living tissue is made of chitin, and chitin is a living material and has no antigenicity, so it is compatible with living tissue and does not cause rejection reactions. It also has a degree of tooth-killing effect, so when it is inserted into the socket immediately after a tooth extraction, the subsequent progress is very good and the patient does not feel any pain, and the tooth extraction scar is actually in the same state as the tooth extraction wound healing immediately after the tooth extraction. Become. In this respect, the patient's pain is significantly reduced compared to the conventional method of waiting for the tooth extraction wound to heal in an open state after tooth extraction. The chitin substance is then replaced with the original living tissue, and the core body is embedded within the living tissue.
Since the core body is retained in the tooth socket in an engrafted state,
A denture fitted with this as an abutment tooth is firmly attached to the jaw, and it is physiologically reasonable, so the patient does not suffer from various after-effects. Also, unlike applying a hard implant such as apatite ceramic to a tooth extraction socket, it can be applied whether or not periodontal ligament remains, and in the case of a hard implant, it fills the gap between the alveolar bone and the implant. If an external force is applied while the tissue is growing, it may re-injure the tissue that has already begun to grow, delaying implant survival or causing tissue overgrowth and causing the implant to float. Patients must be very careful not to apply external force until the implant is completely attached, which causes considerable inconvenience, but chitin implants are soft, so
The tooth extraction wound is not damaged again by the action of external force, and there is no need to particularly avoid applying external force after tooth extraction, so the patient feels less inconvenience.
第１図は本発明の第１の実施例の縦断面図、第
２図は同実施例の適用直後の歯槽部断面図、第３
図は同じく相当期間経過後の図、第４図は本発明
の第２の実施例の縦断面図、第５図は同実施例の
適用の直後の歯槽部断面図、第６図は同じく相当
期間経過後の図である。
１……キチン質本体、２……芯体、３……ボル
ト、４……義歯支持用ボルト、Ｂ……歯槽骨、Ｍ
……歯根膜、Ｓ……縫合糸、Ｔ……義歯。
FIG. 1 is a longitudinal cross-sectional view of the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the alveolar portion of the same embodiment immediately after application, and FIG.
4 is a longitudinal sectional view of the second embodiment of the present invention, FIG. 5 is a sectional view of the alveolar portion immediately after application of the same embodiment, and FIG. It is a figure after a period elapsed. 1... Chitin body, 2... Core body, 3... Bolt, 4... Denture support bolt, B... Alveolar bone, M
...periodontal ligament, S... suture, T... denture.
Claims (1)
親和性の良い硬質材料で構成し、上面を除く上
記芯体の周囲を歯根形状にキチン質で被覆成型
したことを特徴とする歯科インプラント。 ［請求項２］ 上記芯体の上面に義歯を植立する
ためのねじ穴を予め設けたことを特徴とする請
求項１記載の歯科インプラント。 ［請求項３］ 支台歯が金属で、その下方に延び
た脚部を歯根形状に成型したキチン質内に埋入
させたことを特徴とする請求項１記載の歯科イ
ンプラント。[Scope of Claims] 1 [Claim 1] A core body serving as an abutment tooth is made of a hard material that has good affinity with living organisms, and the periphery of the core body except for the upper surface is coated with chitin in the shape of a tooth root. A dental implant characterized by: [Claim 2] The dental implant according to Claim 1, wherein a screw hole for implanting a denture is provided in advance on the upper surface of the core body. [Claim 3] The dental implant according to Claim 1, wherein the abutment tooth is made of metal, and its downwardly extending leg portion is embedded in chitin formed into a tooth root shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1101208A JPH02277451A (en) | 1989-04-19 | 1989-04-19 | Dental implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1101208A JPH02277451A (en) | 1989-04-19 | 1989-04-19 | Dental implant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02277451A JPH02277451A (en) | 1990-11-14 |
| JPH0450824B2 true JPH0450824B2 (en) | 1992-08-17 |
Family
ID=14294504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1101208A Granted JPH02277451A (en) | 1989-04-19 | 1989-04-19 | Dental implant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02277451A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107997837A (en) * | 2017-12-08 | 2018-05-08 | 华南理工大学 | A kind of mouth cavity planting body of cored structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181872A (en) * | 1988-01-14 | 1989-07-19 | Unitika Ltd | Transplanting material for organism |
-
1989
- 1989-04-19 JP JP1101208A patent/JPH02277451A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181872A (en) * | 1988-01-14 | 1989-07-19 | Unitika Ltd | Transplanting material for organism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02277451A (en) | 1990-11-14 |
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