JPH09192145A - Artificial dental root - Google Patents
Artificial dental rootInfo
- Publication number
- JPH09192145A JPH09192145A JP8008569A JP856996A JPH09192145A JP H09192145 A JPH09192145 A JP H09192145A JP 8008569 A JP8008569 A JP 8008569A JP 856996 A JP856996 A JP 856996A JP H09192145 A JPH09192145 A JP H09192145A
- Authority
- JP
- Japan
- Prior art keywords
- artificial tooth
- tooth root
- bone
- screw
- bone hole
- 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.)
- Granted
Links
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、歯科治療用に供さ
れる人工歯根（インプラント）に関する。TECHNICAL FIELD The present invention relates to an artificial tooth root (implant) used for dental treatment.
【０００２】[0002]
【従来の技術】従来の図８〜図１０、或いは図１１〜図
１３に示すようなものがある。図８〜図１０はブローネ
マルクシステム、図１１〜図１３はインターモビールジ
リンダー（ＩＭＺ，ドイツ語）である。2. Description of the Related Art There are conventional ones as shown in FIGS. 8 to 10 show the Brånemark system, and FIGS. 11 to 13 show the intermobile zirlinder (IMZ, German).
【０００３】まず、図８〜図１０では、あごの骨１の歯
槽部３に人工歯根５をねじ込んで取り付けている。人工
歯根５は、人工歯根本体７の略全体にわたってねじ部９
を有している。人工歯根本体７の基端側にはフランジ部
１５と、ねじ込み操作用の八角形等の頭１７とが設けら
れている。又、図示はしないが、人工歯根本体７の基端
から内部に穴が形成され、その奥側に雌ねじ部が設けら
れている。又、このような人工歯根５を適用するために
あごの骨１には歯槽部３にドリル等で開けた骨穴１９が
設けられ、骨穴１９の開口側には拡径したカウンタ−シ
ンク部２１が設けられている。そして、前記人工歯根本
体７は、ねじ部９を取付穴１９にねじ込んでカウンター
シンク部２１にフランジ部１５を嵌合させるようにして
歯槽部３に取り付ける。この取り付けが安定するまでこ
のまま３〜４ケ月放置する。この間に歯肉２３が頭１７
上にまで成長する。従って、３〜４ケ月後に頭１７上の
歯肉２３を切り開き、ビス２５をアバットメント２７に
挿入し、且つ人工歯根本体７の内部のねじにねじ込むこ
とによって、人工歯根本体７の基端上にアバットメント
２７を固定する。このアバットメント２７に対して図９
のように人工歯２９を取り付ける。First, in FIGS. 8 to 10, an artificial tooth root 5 is screwed and attached to the alveolar portion 3 of the jaw bone 1. The artificial tooth root 5 has a threaded portion 9 over substantially the entire artificial tooth root body 7.
have. A flange portion 15 and an octagonal head 17 for screwing operation are provided on the proximal end side of the artificial tooth root body 7. Although not shown, a hole is formed from the base end of the artificial dental root main body 7 to the inside, and a female screw portion is provided on the back side thereof. Further, in order to apply such an artificial tooth root 5, the jaw bone 1 is provided with a bone hole 19 drilled in the alveolar portion 3 and a counter-sink portion having an enlarged diameter is provided on the opening side of the bone hole 19. 21 is provided. Then, the artificial tooth root body 7 is attached to the alveolar portion 3 by screwing the screw portion 9 into the attachment hole 19 and fitting the flange portion 15 to the counter sink portion 21. Leave this for 3 to 4 months until this attachment is stable. During this period, the gingiva 23 becomes head 17
Grow up to the top. Therefore, after three to four months, the gingiva 23 on the head 17 is cut open, the screw 25 is inserted into the abutment 27, and the screw is screwed into the screw inside the artificial tooth root body 7, so that the abutment is placed on the proximal end of the artificial tooth root body 7. The attachment 27 is fixed. FIG. 9 shows this abutment 27.
The artificial tooth 29 is attached as shown in FIG.
【０００４】又、図１１〜図１３の例では、内部にねじ
穴を有した人工歯根本体３１をあごの骨１の歯槽部３に
形成した取付穴３３に圧入するようにしたものである。
そして、上記同様にして３〜４ケ月後に歯肉２３を切り
開き、金属部材３５を人工歯根本体３１にねじ込み、こ
の金属部材３５に対し樹脂部材３７を介して取付ねじ３
９により人工歯４１を締結固定する。Further, in the examples of FIGS. 11 to 13, the artificial tooth root body 31 having a screw hole therein is press-fitted into the mounting hole 33 formed in the alveolar portion 3 of the jaw bone 1.
Then, the gingiva 23 is cut open after 3 to 4 months in the same manner as described above, the metal member 35 is screwed into the artificial tooth root body 31, and the mounting screw 3 is attached to the metal member 35 via the resin member 37.
The artificial tooth 41 is fastened and fixed by 9.
【０００５】従って、いずれの例でも人工歯根本体７，
３１に対し人工歯２９，４１を確実に取り付けることが
できる。Therefore, in any of the examples, the artificial tooth root body 7,
The artificial teeth 29, 41 can be reliably attached to the 31.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、図８〜
図１０の例では、あごの骨１にカウンターシンク部２１
を設け、このカウンターシンク部２１に人工歯根本体７
のフランジ部１５を嵌め込むようにして取り付けるた
め、カウンターシンク部２１の誤差等によってフランジ
部１５との間に僅かな隙間が開き、細菌が侵入する恐れ
がある。又、骨穴１９の他、カウンターシンク部２１を
削らなければならず、患者に相当な負担をかける恐れが
ある。さらに、３〜４ケ月後に歯肉２３を切り開くこと
によって、頭１７を露出させる際には頭１７の端面のみ
ならず、その側周面も露出させなければならず、部分的
ではあるが歯肉が安定しづらいという問題がある。However, FIGS.
In the example of FIG. 10, the countersink part 21 is provided on the jaw bone 1.
The countersink portion 21 is provided with an artificial tooth root body 7
Since the flange portion 15 is attached so as to be fitted thereinto, a slight gap may be opened between the flange portion 15 and the flange portion 15 due to an error in the counter sink portion 21, and bacteria may enter. In addition to the bone hole 19, the counter sink portion 21 must be shaved, which may impose a considerable burden on the patient. Furthermore, when the head 17 is exposed by cutting open the gingiva 23 after 3 to 4 months, not only the end face of the head 17 but also the side circumferential surface thereof must be exposed. There is a problem of difficulty.
【０００７】図１１〜図１３の例では、骨穴３３にカウ
ンターシンク部を設ける必要がないため、上記のような
問題はないが、骨穴３３と人工歯根本体３１との間から
細菌が侵入する恐れがある。In the examples shown in FIGS. 11 to 13, since it is not necessary to provide a countersink portion in the bone hole 33, the above problem does not occur, but bacteria enter from between the bone hole 33 and the artificial tooth root body 31. There is a risk of
【０００８】そこで、この発明は、患者の負担を著しく
軽減できると共に、細菌の侵入を防止し、且つ部分的で
はあるが手術後の歯肉の安定を図りやすい人工歯根の提
供を目的とする。[0008] Therefore, it is an object of the present invention to provide an artificial dental root which can remarkably reduce the burden on the patient, prevent the invasion of bacteria, and facilitate the partial but stable gingiva after surgery.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に、請求項１の発明は、人工歯根本体をあごの骨の歯槽
部の骨穴に取り付ける人工歯根において、前記人工歯根
本体の基端縁周囲に、前記骨穴の開口縁端面に当接する
フランジ部を設けたことを特徴とする。In order to solve the above-mentioned problems, the invention of claim 1 is an artificial dental root for mounting an artificial dental root body in a bone hole of an alveolar part of a jaw bone, in which a proximal end of the artificial dental root body is provided. It is characterized in that a flange portion is provided around the edge so as to come into contact with the opening edge surface of the bone hole.
【００１０】従って、人工歯根本体をあごの骨の歯槽部
の骨穴に取り付けると、フランジ部が歯槽部の骨穴の開
口縁端面に当接してこれを塞ぐ状態となる。又、３〜４
ケ月後に歯肉を切り開く時には、フランジ部の端面のみ
を露出させればよい。Therefore, when the artificial tooth root main body is attached to the bone hole of the alveolar portion of the jaw bone, the flange portion comes into contact with the opening edge surface of the bone hole of the alveolar portion to close it. Also, 3-4
When the gingiva is cut open after a month, only the end face of the flange portion needs to be exposed.
【００１１】請求項２の発明は、請求項１記載の人工歯
根であって、前記人工歯根本体は、先端側に骨穴にねじ
込むためのねじ部を有し、基端端面にねじ込み操作用の
多角形断面の穴を有することを特徴とする。A second aspect of the present invention is the artificial tooth root according to the first aspect, wherein the artificial tooth root body has a screw portion for screwing into a bone hole on a distal end side, and a screwing operation is performed on a proximal end surface. It has a hole having a polygonal cross section.
【００１２】従って、請求項１の発明の作用に加え、人
工歯根本体をあごの骨の歯槽部の骨穴にねじ込みによっ
て取り付けることができる。Therefore, in addition to the operation of the first aspect of the invention, the artificial tooth root body can be attached to the bone hole of the alveolar portion of the jaw bone by screwing.
【００１３】請求項３の発明では、請求項２の発明の作
用に加え、人工歯根本体のねじ部が凹部によって部分的
となり、歯槽部の骨穴に対するねじ込みを部分的なもの
にすることができる。According to the invention of claim 3, in addition to the effect of the invention of claim 2, the screw portion of the artificial tooth root body is partially formed by the recess, and the screwing into the bone hole of the alveolar portion can be made partial. .
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態（実施
形態）を説明する。図１〜図４は、本発明の実施形態に
係る人工歯根を説明するもので、図１はあごの骨に取り
付けた状態、図２は人工歯根の断面図、図３は人工歯根
の基端側の正面図、図４はねじ部側の正面図を示してい
る。Embodiments of the present invention (embodiments) will be described below. 1 to 4 are explanatory views of an artificial tooth root according to an embodiment of the present invention. FIG. 1 is a state in which the tooth root is attached to a jaw bone, FIG. 2 is a cross-sectional view of the artificial tooth root, and FIG. 3 is a proximal end of the artificial tooth root. Side front view, FIG. 4 has shown the front view of the screw part side.
【００１５】人工歯根は人工歯根本体４３を歯槽部３の
骨穴４５にねじ込んで取り付けている。人工歯根本体４
３の基端側周囲にはフランジ部４７が設けられている。
人工歯根本体４３のフランジ部４７が設けられた基端端
面５１にはねじ込み操作用の多角形断面の穴５３が設け
られ、その奥側にアバットメント取付用の雌ねじ５５が
設けられている。前記人工歯根本体４３の先端側には骨
穴４５にねじ込むためのねじ部５７が設けられている。
このねじ部５７の周囲には切欠部５９が設けられてい
る。この切欠部５９は周方向３箇所に等間隔で設けら
れ、ねじ部５７の軸方向略全体に設けられている。The artificial tooth root is mounted by screwing the artificial tooth root body 43 into the bone hole 45 of the alveolar part 3. Artificial tooth root body 4
A flange portion 47 is provided around the base end side of 3.
A hole 53 having a polygonal cross section for screwing operation is provided on a base end surface 51 of the artificial tooth root body 43 provided with a flange portion 47, and an internal thread 55 for attaching an abutment is provided on the back side thereof. A screw portion 57 for screwing into the bone hole 45 is provided on the distal end side of the artificial tooth root body 43.
A cutout 59 is provided around the thread 57. The cutout portions 59 are provided at three locations in the circumferential direction at equal intervals, and are provided on substantially the entire axial direction of the screw portion 57.
【００１６】かかる人工歯根本体４３の取り付けに際し
ては、図５（ｂ）のようにあごの骨１の歯槽部３に骨穴
４５を形成する。この骨穴４５はその先端側が縮径して
おり、前記ねじ部５７をねじ込む構造となっている。こ
のような骨穴４５に図５（ａ）のように人工歯根本体４
３をねじ込む。このねじ込みによってフランジ部４７が
骨穴４５の開口縁端面に当接する。この人工歯根本体４
３のねじ込みに際し、ねじ部５７が先端側に設けられて
いるため、骨穴４５に挿入し易く、手術が容易となる。
又、切欠部５９によってねじ部５７が部分的となり、骨
穴４５に入れてねじ回す時、削れた骨片が切欠部５９と
骨穴４５との間にたまり、自家骨移植と同じ効果があ
り、治癒し易くなる。又、ねじ部５７を骨穴４５の先端
側にねじ切りながら入れる時、摩擦や圧力が少なく、骨
へのダメージが減少し患者の負担が軽くなる。骨が治癒
すれば、切欠部５９やねじ部５７を骨が覆い、人工歯根
本体４３の回転や下方への沈下を防ぐことができる。さ
らに、フランジ部４７が骨穴４５の開口縁端面に当接す
ることでも、人工歯根本体４３の沈下を防ぐことができ
る。又、骨削時のドリルの遊びなどで骨穴４５と人工歯
根本体４３との間に若干の隙間ができたとしてもフラン
ジ部４７で骨穴４５を塞ぐ形となり、人工歯根本体４３
と骨穴４５との間への細菌の侵入を防ぎ、その間に新生
骨ができることを助け、人工歯根本体４３と骨穴４５と
が３〜４ケ月後には緊密に接触するようになる。フラン
ジ部４７と歯肉２３の接触する部分が人工歯根本体４３
と歯肉２３とのヘミデスモゾーム結合（歯肉が人工歯根
本体とくっつこうとする）しやすいため、細菌の侵入を
防ぐことができる。更に、人工歯根本体４３のねじ込み
の３〜４ケ月後、歯肉を切開き、図５（ａ）のようにア
バットメント６１等を取り付けるが、フランジ部４７を
含み人工歯根本体４３の基端端面のみを切開けばよく、
フランジ部４７周囲の歯肉を触らずにすみ、部分的では
あるが歯肉を安静に保つことができる。When attaching the artificial tooth root body 43, a bone hole 45 is formed in the alveolar portion 3 of the chin bone 1 as shown in FIG. 5 (b). The bone hole 45 has a diameter reduced at its tip end side, and has a structure in which the screw portion 57 is screwed in. In such a bone hole 45, as shown in FIG.
Screw in 3. By this screwing, the flange portion 47 comes into contact with the opening edge surface of the bone hole 45. This artificial tooth root body 4
At the time of screwing in No. 3, since the screw portion 57 is provided on the distal end side, the screw portion 57 can be easily inserted into the bone hole 45 and the operation can be facilitated.
Further, the notch 59 makes the screw part 57 partial, and when the screw part 57 is inserted into the bone hole 45 and screwed, the scraped bone fragments are accumulated between the notch 59 and the bone hole 45, which has the same effect as autologous bone graft. , Easier to heal. Further, when the threaded portion 57 is inserted into the tip side of the bone hole 45 while being threaded, friction and pressure are small, damage to the bone is reduced, and the burden on the patient is lightened. When the bone is healed, the bone covers the cutout portion 59 and the screw portion 57 to prevent the artificial dental root main body 43 from rotating and sinking downward. Further, even when the flange portion 47 abuts on the opening edge surface of the bone hole 45, it is possible to prevent the artificial tooth root body 43 from sinking. Further, even if a slight gap is created between the bone hole 45 and the artificial tooth root body 43 due to play of a drill during bone cutting, the flange portion 47 closes the bone hole 45 and the artificial tooth root body 43 is formed.
Bacteria are prevented from invading between the bone hole 45 and the bone hole 45, and new bone is formed between them, so that the artificial tooth root body 43 and the bone hole 45 come into close contact with each other after 3 to 4 months. The part where the flange portion 47 and the gingiva 23 contact each other is the artificial tooth root body 43.
Since it is easy for the hemidesmosome to bond with the gingiva 23 (the gingiva tends to stick to the artificial tooth root body), invasion of bacteria can be prevented. Furthermore, after 3 to 4 months of screwing the artificial tooth root body 43, the gingiva is cut open and the abutment 61 and the like are attached as shown in FIG. 5A, but only the proximal end face of the artificial tooth root body 43 including the flange portion 47 is attached. Just open the
The gingiva around the flange portion 47 can be left untouched, and the gingiva can be kept still although it is partial.
【００１７】なお、歯肉２３を切開いた後、アバットメ
ント６１を取付ねじ６３の人工歯根本体４３に対するね
じ込みによって固定する。そして、図９と同様に人工歯
を取り付けるものである。After opening the gingiva 23, the abutment 61 is fixed by screwing the mounting screw 63 into the artificial tooth root body 43. Then, artificial teeth are attached in the same manner as in FIG.
【００１８】図６は、本発明の実施の形態に係る人工歯
根５に他の形態のアバットメント６５及び取付ねじ６７
を用いて人工歯４１を取付けたもので、（ａ）は取付状
態の断面図であり、（ｂ）はアバットメント６５の側面
図、（ｃ）は取付ねじ６７の側面図である。この図６の
ようにアバットメント６５は人工歯根５のフランジ部４
７と同一径を有するフランジ部６９を有し、下部に人工
歯根５への差し込み部７１と上部に人工歯４１の受け部
７３とを備えている。受け部７３の外周はテーパ面７３
ａとなっている。また、アバットメント６５の軸心部に
は取付ねじ６７挿通用の貫通穴７５が設けられている。
前記取付ねじ６７は頭部６８の外周がテーパ面６８ａと
なっている。FIG. 6 shows an artificial tooth root 5 according to an embodiment of the present invention, in which an abutment 65 and a mounting screw 67 of another embodiment are attached.
The artificial tooth 41 is attached by using FIG. 5, (a) is a sectional view of the attached state, (b) is a side view of the abutment 65, and (c) is a side view of the mounting screw 67. As shown in FIG. 6, the abutment 65 includes the flange portion 4 of the artificial tooth root 5.
7, a flange portion 69 having the same diameter as that of the artificial tooth 41 is provided, a lower portion is provided with an insertion portion 71 into the artificial tooth root 5, and an upper portion is provided with a receiving portion 73 for the artificial tooth 41. The outer periphery of the receiving portion 73 has a tapered surface 73.
It is a. Further, a through hole 75 for inserting the mounting screw 67 is provided at the axial center of the abutment 65.
The mounting screw 67 has a tapered surface 68a on the outer circumference of a head 68.
【００１９】このようなアバットメント６５と取付ねじ
６７を用いて図６（ａ）のように人工歯４１を人工歯根
５に締結固定するものである。そして、取付ねじ６７に
よって人工歯４１を締結固定する場合、反対側の対合歯
との距離の個々の違いは頭部６８の高さを削って調整
し、その後人工歯４１を作ることにより調整することが
できる。又、頭部６８はテーパ面６８ａを有しているた
め取付ねじ６７の締付けによって人工歯４１の締付け穴
４１ａをテーパ面６８ａによって確実に締付けることが
できる。又、受け部７３にテーパ面７３ａを有するアバ
ットメント６５の場合には、何本かの人工歯根５を連結
した時に相互間に多少平行性がとれなくてもテーパ面７
３ａが人工歯４１側の穴４１ｂに対して多少ずれること
ができ、連結した人工歯構造物を無理なく作ることがで
きる。さらに、テーパ面７３ａの存在によってアバット
メント６５を人工歯根５に取り付けたままで印象をとる
ことができるため、作業が簡単になる。The abutment 65 and the mounting screw 67 are used to fasten and fix the artificial tooth 41 to the artificial tooth root 5 as shown in FIG. 6 (a). Then, when the artificial tooth 41 is fastened and fixed by the mounting screw 67, the individual difference in the distance from the opposing tooth on the opposite side is adjusted by cutting the height of the head 68, and then adjusting the artificial tooth 41. can do. Further, since the head portion 68 has the tapered surface 68a, the tightening hole 41a of the artificial tooth 41 can be securely tightened by the tapered surface 68a by tightening the mounting screw 67. Further, in the case of the abutment 65 having the tapered surface 73a on the receiving portion 73, even if some parallelism cannot be obtained between the artificial tooth roots 5 when they are connected, the tapered surface 7
3a can be displaced a little with respect to the hole 41b on the artificial tooth 41 side, and a connected artificial tooth structure can be reasonably manufactured. Further, the presence of the tapered surface 73a allows an impression to be taken while the abutment 65 is attached to the artificial tooth root 5, so that the work is simplified.
【００２０】図７は、本発明の実施形態に係る人工歯根
５に更に他の形態のアバットメント７９を用いて人工歯
２９を取り付けたもので、図７（ａ）は人工歯２９を取
り付けた状態の断面図、（ｂ）は顎の背面側から見たア
バットメント７９と取付ねじ６７との関係を示す背面図
であり、（ｃ）は顎の正面側から見た同正面図である。
尚、取付ねじ６７は図６の（ｃ）と同一構造のものであ
る。前記アバットメント７９の場合も人工歯５のフラン
ジ部４７と同一径のフランジ部８３を有し、下部に差し
込み部８５、上部に受け部８６を有している。前記受け
部８６には背面側から両サイドに２個のねじ穴８９が設
けられている。FIG. 7 shows an artificial tooth 29 attached to the artificial tooth root 5 according to the embodiment of the present invention by using an abutment 79 of another form. FIG. 7A shows the artificial tooth 29 attached. Sectional view of the state, (b) is a rear view showing the relationship between the abutment 79 and the mounting screw 67 seen from the back side of the jaw, (c) is the same front view seen from the front side of the jaw.
The mounting screw 67 has the same structure as that shown in FIG. The abutment 79 also has a flange portion 83 having the same diameter as the flange portion 47 of the artificial tooth 5, an insertion portion 85 in the lower portion, and a receiving portion 86 in the upper portion. The receiving portion 86 is provided with two screw holes 89 on both sides from the back side.
【００２１】このようなアバットメント７９と取付ねじ
６７とを用いて図７（ａ）のように人工歯２９を人工歯
根５に締結固定している。又、前記アバットメント７９
の２つのねじ穴８９にそれぞれ固定ねじ９１を用いてア
バットメント７９に対し人工歯２９を固定している。こ
の２個のねじ穴８９に対する固定ねじ９１による締付け
固定は前歯である人工歯２９の取付角度を反対側の対合
歯に対して角度調整を可能とするものである。従来は、
ねじ穴８９がアバットメント７９の中央部に１個あり、
しかも上部側に存在していた。このためねじ穴８９にね
じ込んだ固定ねじ９１の一部が上部側に突き出て技工作
業がしにくく、時には突き出した固定ねじ９１の一部に
対合歯が当たることがあり、このような構造が採用でき
ないことも有り得た。しかし、図７のような形態とする
ことによってねじ穴８９がアバットメント７９のできる
だけ下側となり、且つ左右一対となるため、固定ねじ９
１を締付けた場合にも対合歯に対して邪魔になりにくい
という利点がある。又、固定ねじ９１を２本用いるた
め、固定力が強く、また左右どちらかの固定ねじ９１が
対合歯の邪魔になる時は、一方の固定ねじ９１のみを用
いても固定することができるのである。尚、取付ねじ６
７が人工歯２９から飛び出している部分は削り取って調
整するものである。The artificial tooth 29 is fastened and fixed to the artificial tooth root 5 as shown in FIG. 7A by using the abutment 79 and the mounting screw 67. In addition, the abutment 79
The artificial teeth 29 are fixed to the abutment 79 by using fixing screws 91 in the two screw holes 89. The fastening and fixing by the fixing screw 91 to the two screw holes 89 makes it possible to adjust the mounting angle of the artificial tooth 29, which is the front tooth, with respect to the opposing tooth on the opposite side. conventionally,
There is one screw hole 89 at the center of the abutment 79,
Moreover, it existed on the upper side. Therefore, a part of the fixing screw 91 screwed into the screw hole 89 protrudes to the upper side, and it is difficult to perform the technical work, and sometimes the protruding part of the fixing screw 91 may come into contact with the mating teeth. It was possible that they could not be hired. However, by adopting the configuration as shown in FIG. 7, the screw holes 89 are located on the lower side of the abutment 79 as much as possible, and the pair of left and right screws are provided.
Even if 1 is tightened, there is an advantage that it is less likely to interfere with the opposing teeth. Further, since the two fixing screws 91 are used, the fixing force is strong, and when either the left or right fixing screw 91 interferes with the mating teeth, it can be fixed by using only one fixing screw 91. Of. The mounting screw 6
The portion where 7 protrudes from the artificial tooth 29 is scraped off and adjusted.
【００２２】[0022]
【発明の効果】請求項１の発明では、フランジ部が歯槽
部の開口縁端面に当接するため、骨削り時のドリル等の
遊び等によって歯槽部の骨穴がやや大きくなっても、フ
ランジ部で蓋をする形となり、骨穴と人工歯根本体との
間への細菌の侵入を防ぎ、その間へ新生骨ができること
を助け、人工歯根本体とあごの骨とが３〜４ケ月後に緊
密に接触することができる。フランジ部によって人工歯
根本体の沈下を防ぐことができる。フランジ部の歯肉と
接触する部分が人工歯根本体と歯肉のヘミデスモゾーム
結合しやすいため、細菌の侵入を防ぐことができる。更
に、人工歯根本体を取付けてから３〜４ケ月後、歯肉を
切り開いて人工歯根本体にアバットメント等の部品を取
り付ける際には、フランジ部の端面のみを切り開けばよ
く、その側面は触らずにすみ、部分的ではあるが歯肉を
安静に保つことができる。According to the invention of claim 1, since the flange portion abuts the opening edge surface of the alveolar portion, even if the bone hole in the alveolar portion becomes slightly large due to play of a drill or the like during bone cutting, the flange portion The lid becomes a shape to prevent bacteria from invading between the bone hole and the artificial tooth root body, and helps to form new bone between them, so that the artificial tooth root body and the jaw bone come into close contact after 3 to 4 months. can do. The flange portion can prevent the artificial tooth root body from sinking. Since the portion of the flange portion that contacts the gingiva easily binds to the hemidesmosomes of the artificial tooth root body and the gingiva, invasion of bacteria can be prevented. Furthermore, 3 to 4 months after the artificial tooth root main body is attached, when the gingiva is cut open and parts such as abutments are attached to the artificial tooth root main body, only the end face of the flange portion needs to be cut open, and the side face is not touched. Excuse me, but I can keep my gums at rest, albeit partially.
【００２３】請求項２の発明では、請求項１の効果に加
え、ねじ部が人工歯根本体の先端側に設けられているた
め、ねじ込みの際に骨穴に入れ易く、手術が容易とな
る。According to the invention of claim 2, in addition to the effect of claim 1, since the screw portion is provided on the distal end side of the artificial tooth root main body, it is easy to insert it into the bone hole at the time of screwing, and the operation is facilitated.
【００２４】請求項３の発明では、請求項２の発明の効
果に加え、凹部によってねじ部が部分的となり、ねじ込
み時に削れた骨片が凹部と骨穴との間にたまり、自家骨
移植と同じ効果を奏し、治癒し易くなる。又、ねじ込み
時に骨穴との摩擦や圧力が少なくなり、骨へのダメージ
が少なく、患者の負担を著しく軽減することができる。
さらに、骨が治癒すれば凹部、及びねじ部を骨が覆い、
人工歯根本体の回転や沈下を防ぐことができる。According to the invention of claim 3, in addition to the effect of the invention of claim 2, the screw part is partially formed by the recess, and bone fragments scraped during screwing are accumulated between the recess and the bone hole, resulting in autologous bone grafting. It has the same effect and is easier to heal. In addition, friction and pressure with the bone hole are reduced during screwing, the damage to the bone is small, and the burden on the patient can be significantly reduced.
Furthermore, if the bone heals, the bone will cover the recess and the screw,
It is possible to prevent rotation and subsidence of the artificial tooth root body.
【図１】人工歯根本体を骨穴に取り付けた状態の断面図
である。FIG. 1 is a cross-sectional view of a state in which an artificial tooth root body is attached to a bone hole.
【図２】人工歯根本体の断面図である。FIG. 2 is a cross-sectional view of an artificial tooth root body.
【図３】人工歯根本体の基端側の正面図である。FIG. 3 is a front view of a proximal end side of an artificial tooth root body.
【図４】人工歯根本体のねじ部側の正面図である。FIG. 4 is a front view of the artificial tooth root body on the screw side.
【図５】作用説明図であり、（ａ）は人工歯根本体を骨
穴に取り付けアバットメントをねじ込もうとしている状
態の断面図、（ｂ）は骨穴を示す断面図である。5 (a) is a sectional view showing a state in which the artificial dental root main body is attached to the bone hole and the abutment is about to be screwed in, and FIG. 5 (b) is a sectional view showing the bone hole.
【図６】他の形態のアバットメント及び取付ねじを用い
たものであり、（ａ）は取付け状態の断面図、（ｂ）は
アバットメントの側面図、（ｃ）は取付ねじの側面図で
ある。6A and 6B show another example of an abutment and a mounting screw, wherein FIG. 6A is a sectional view of the mounted state, FIG. 6B is a side view of the abutment, and FIG. 6C is a side view of the mounting screw. is there.
【図７】さらに他の形態のアバットメントを用いたもの
であり、（ａ）は取り付状態の断面図、（ｂ）はアバッ
トメント及び取付ねじの背面図、（ｃ）は同正面図であ
る。7A and 7B are views showing an abutment of still another form, in which FIG. 7A is a sectional view of the mounted state, FIG. 7B is a rear view of the abutment and mounting screws, and FIG. is there.
【図８】従来例に係り、人工歯根本体の骨穴に対する取
り付けとアバットメントとの関係を示す断面図である。FIG. 8 is a cross-sectional view showing a relationship between attachment of an artificial dental root main body to a bone hole and an abutment according to a conventional example.
【図９】人工歯を取り付けた状態の側面図である。FIG. 9 is a side view showing a state where artificial teeth are attached.
【図１０】骨穴を示す断面図である。FIG. 10 is a cross-sectional view showing a bone hole.
【図１１】他の従来例に係る人工歯根本体の取り付けと
人工歯の取り付けとの関係を示す断面図である。FIG. 11 is a cross-sectional view showing a relationship between attachment of an artificial tooth root body and attachment of an artificial tooth according to another conventional example.
【図１２】他の従来例に係り分解断面図である。FIG. 12 is an exploded sectional view according to another conventional example.
【図１３】骨穴の断面図である。FIG. 13 is a cross-sectional view of a bone hole.
１ あごの骨 ３ 歯槽部 ５ 人工歯根 ４３ 人工歯根本体 ４５ 骨穴 ４７ フランジ部 ５１ 基端端面 ５７ ねじ部 ５９ 切欠部 1 jaw bone 3 alveolar part 5 artificial tooth root 43 artificial tooth root body 45 bone hole 47 flange part 51 base end face 57 screw part 59 notch part
Claims (3)
に取り付ける人工歯根において、 前記人工歯根本体の基端縁周囲に、前記骨穴の開口縁端
面に当接するフランジ部を設けたことを特徴とする人工
歯根。1. An artificial tooth root for attaching an artificial tooth root body to a bone hole of an alveolar portion of a jaw bone, wherein a flange portion is provided around a base end edge of the artificial tooth root body to abut an opening edge surface of the bone hole. An artificial tooth root characterized by that.
じ部を有し、基端端面にねじ込み操作用の多角形断面の
穴を有することを特徴とする人工歯根。2. The artificial tooth root according to claim 1, wherein the artificial tooth root body has a screw portion for screwing into a bone hole on a distal end side, and a hole having a polygonal cross section for screwing operation on a proximal end face. An artificial tooth root characterized by having.
工歯根。3. The artificial tooth root according to claim 2, wherein the screw portion has a cutout portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8008569A JP2886817B2 (en) | 1996-01-22 | 1996-01-22 | Artificial root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8008569A JP2886817B2 (en) | 1996-01-22 | 1996-01-22 | Artificial root |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09192145A true JPH09192145A (en) | 1997-07-29 |
| JP2886817B2 JP2886817B2 (en) | 1999-04-26 |
Family
ID=11696694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8008569A Expired - Fee Related JP2886817B2 (en) | 1996-01-22 | 1996-01-22 | Artificial root |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2886817B2 (en) |
-
1996
- 1996-01-22 JP JP8008569A patent/JP2886817B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2886817B2 (en) | 1999-04-26 |
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