JPS62217954A - Calcium phosphate crystallized glass dental crown - Google Patents
Calcium phosphate crystallized glass dental crownInfo
- Publication number
- JPS62217954A JPS62217954A JP61058260A JP5826086A JPS62217954A JP S62217954 A JPS62217954 A JP S62217954A JP 61058260 A JP61058260 A JP 61058260A JP 5826086 A JP5826086 A JP 5826086A JP S62217954 A JPS62217954 A JP S62217954A
- Authority
- JP
- Japan
- Prior art keywords
- dental crown
- crystallized glass
- calcium phosphate
- crown
- edge
- 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.)
- Pending
Links
Landscapes
- Dental Prosthetics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はリン酸カルシウム質結晶化ガラス歯冠に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a calcium phosphate crystallized glass dental crown.
（従来の技術）
従来、歯科治療において、ムは、Ｐｄ等の＊金属を主体
とした合金が＃１冠修復材として用いられている。これ
ら金属歯冠修復材は七〇辺端部が０．１ｆｉ以下のナイ
フェツジ観となっている。(Prior Art) Conventionally, in dental treatment, an alloy mainly composed of metals such as Pd has been used as #1 crown restoration material. These metal dental crown restorative materials have a 70-sided edge with a kniffed shape of 0.1 fi or less.
一方、ポーセレンジャケットクヲウ／の場合にはこのよ
うな薄い辺端部の４造であると、その歯冠修復材はその
装着時や使用時に破損し易いため、七〇辺端部の肉厚は
０．８〜１．０■のショルダー型、シヤンフアー型が採
用されている。On the other hand, in the case of a porcelain jacket, the thickness of the 70-sided edge is very high, since the crown restoration material is easily damaged during installation or use if it has such a thin edge. Shoulder type and shallower type of 0.8 to 1.0 cm are used.
（発明の解決しようとする問題点）
しかしながら、リン酸カルシウム質結晶化ガラスを用い
て歯冠についてどの様な形状が好ましいかについては報
告されていない。(Problems to be Solved by the Invention) However, there has been no report on what shape is preferable for a tooth crown using calcium phosphate crystallized glass.
（問題点を解決するための手段〉
本発明は、かかるリン酸質結晶化ガラスから成る歯冠が
Ｍする好ましい形状を得べく検討した結果、辺端部の肉
厚が０．３■以上で、その形状がショルダー型、シヤン
フアー型であれば装着時ｆ使用時において破折する事な
く用い得る事を見出し、本発明はかかる形状の歯冠を提
供するものである。(Means for Solving the Problems) As a result of studies aimed at obtaining a preferable shape of the tooth crown made of such phosphoric crystallized glass, the present invention has found that the thickness of the edge portion is 0.3 mm or more. It has been discovered that if the shape is a shoulder type or a shoulder type, it can be used without breaking during installation and use, and the present invention provides a tooth crown with such a shape.
本発明にょろりンばカルシウム質結晶化ガラスとしては
、好ましくは９０ ＷｔＳ以上のリン酸カルシウム質：
リナリ、カルシウムとリンの原子比が０．３５〜０．７
である組成が好ましく、又強度等の物性を改善するため
にＡｌ 、Ｂ等を添加してもよく、又着色成分を微蓋添
加してもよい。The Nyororinba calcium crystallized glass of the present invention preferably has a calcium phosphate of 90 WtS or more:
Linari, the atomic ratio of calcium and phosphorus is 0.35 to 0.7
A composition of the following is preferable, and Al, B, etc. may be added to improve physical properties such as strength, and a small amount of a coloring component may be added.
そして歯冠の辺端部の肉厚は０．３ ｆｉ以上が必要で
あり、０．３鴎に満たないとその装着時や使用時に破折
が生じるおそ２″Ｌがあり、一方２ｍ＋１１を越える場
合は装着歯の削除量が多くなるため好ましくない。The wall thickness of the edge of the tooth crown must be 0.3 fi or more, and if it is less than 0.3 fi, there is a risk of breakage during installation or use, whereas if it exceeds 2 m + 11 In this case, it is not preferable because the amount of attached tooth will be removed.
又、歯冠の辺端の角度は３０〜１２０度がよい。３０度
以下のナイフェツジ状であると装着時、使用時の歯冠の
破折のおそれがあり、３０〜９０度のシャンファー凰カ
、８０〜１２０度のショルダー型にし死場合には破折を
防ぐことが出来る。１２０度以上にすることもげ能だが
、歯質の削除量が多くなるので好ましくない０
不発明において、辺端部がナイフェツジ減であると、肉
厚の４い部分の面積が大きく辺端部がシャンファー型や
ショルダー型では肉厚の薄い部分が非常に小さく止でき
るものである。Further, the angle of the edge of the tooth crown is preferably 30 to 120 degrees. If the crown is in the shape of a knife of less than 30 degrees, there is a risk of the crown breaking during installation or use. It can be prevented. Although it is possible to make it more than 120 degrees, it is not preferable because the amount of tooth substance removed will be large. In the chamfer type and shoulder type, the thin part can be kept very small.
（実施例）
実施例１
＠２小臼歯形状で辺端部の肉厚がｏ、５ｗＩＭ、辺端部
の角度が４５度のシャンファー型の歯冠を作製し、咬合
器の第２小臼歯位置に装着した後、咬合器に６０に９の
荷重を１０００回くり返してかけた処、歯冠の破折は生
じなかった。(Example) Example 1 A chamfer-type tooth crown with @2 premolar shape, wall thickness at the edge of o, 5wIM, and angle at the edge of 45 degrees was prepared, and the second premolar of the articulator was prepared. After the tooth was placed in position, a load of 60 to 9 was applied to the articulator 1000 times, and no fracture of the tooth crown occurred.
実施例２
第１大臼歯形状で辺端部の肉厚がｏ、ａｍ、辺端部の角
度が９０度のショルダー型の歯冠を作製し、咬合器の第
１大臼歯位置に装着した後、実施例１と同様に荷重をか
けた処、歯冠の破折は生じなかった。Example 2 A shoulder-shaped crown with a first molar shape, wall thickness at the edge of o and am, and an angle of 90 degrees at the edge was fabricated, and after it was attached to the first molar position of the articulator. When a load was applied in the same manner as in Example 1, no fracture of the tooth crown occurred.
比較例
第２大白歯形状で辺端部の肉厚が０．２ｆｌ、辺端部の
角度が２０度のナイフェツジ墓の歯冠を作製し、咬合器
の第１大白歯位置に装着した処、作製した２刃冠のうち
１つが装着時にり２ツクが生じ、装着ができたもう１つ
も６０Ｋｇの荷重を１２回作用させた時点で破折した。Comparative Example: A crown of the Naifetuji grave with a second large white tooth shape, a wall thickness of 0.2 fl at the edge, and a 20 degree angle at the edge was prepared, and it was attached to the first large white tooth position of the articulator. One of the two blade crowns produced suffered two cracks when it was installed, and the other one, which could be installed, also broke when a load of 60 kg was applied 12 times.
Claims (4)
なり、辺端部の肉厚が０．３ｍｍ以上で、その形状がシ
ヨルダー型、シヤンフアー型であることを特徴とする歯
冠。(1) A dental crown made of crystallized glass containing calcium phosphate, having a wall thickness of 0.3 mm or more at the edge portion, and having a shoulder-shaped or sharp-fur-shaped shape.
（１）の歯冠。(2) The dental crown according to claim (1), wherein the wall thickness of the edge portion is 0.3 to 2 mm.
る請求の範囲（１）の歯冠。(3) The dental crown according to claim (1), which has a shoulder-shaped side end with an angle of 80 to 120 degrees.
る請求の範囲（１）の歯冠。(4) The dental crown according to claim (1), wherein the edge portion is a square shape with an angle of 30 to 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61058260A JPS62217954A (en) | 1986-03-18 | 1986-03-18 | Calcium phosphate crystallized glass dental crown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61058260A JPS62217954A (en) | 1986-03-18 | 1986-03-18 | Calcium phosphate crystallized glass dental crown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62217954A true JPS62217954A (en) | 1987-09-25 |
Family
ID=13079185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61058260A Pending JPS62217954A (en) | 1986-03-18 | 1986-03-18 | Calcium phosphate crystallized glass dental crown |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62217954A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069007A (en) * | 1983-09-26 | 1985-04-19 | Kyocera Corp | Artificial corona dentis and its preparation |
-
1986
- 1986-03-18 JP JP61058260A patent/JPS62217954A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069007A (en) * | 1983-09-26 | 1985-04-19 | Kyocera Corp | Artificial corona dentis and its preparation |
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