JPS591683B2 - artificial teeth - Google Patents
artificial teethInfo
- Publication number
- JPS591683B2 JPS591683B2 JP54081465A JP8146579A JPS591683B2 JP S591683 B2 JPS591683 B2 JP S591683B2 JP 54081465 A JP54081465 A JP 54081465A JP 8146579 A JP8146579 A JP 8146579A JP S591683 B2 JPS591683 B2 JP S591683B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- artificial tooth
- artificial teeth
- exceeds
- present
- 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
Landscapes
- Glass Compositions (AREA)
- Dental Preparations (AREA)
Description
【発明の詳細な説明】
本発明はアルミノ珪酸塩ガラス製の人工歯に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an artificial tooth made of aluminosilicate glass.
人工歯の一種として従来から使用されている陶歯は、長
石、石英、カオリンを主体とする粉末を焼結したもので
あるが、この陶歯は衝撃に対する強度が低いため、加工
中或いは患者の口中で欠けやすい欠点があった。Porcelain teeth, which have traditionally been used as a type of artificial tooth, are made by sintering powders mainly composed of feldspar, quartz, and kaolin. However, because these porcelain teeth have low impact resistance, they may be damaged during processing or by the patient. It had the disadvantage that it easily chipped in the mouth.
本発明はアルミノ珪酸塩ガラスの粉末を従来の陶歯と同
様な製造方法で成形、焼成することにより、従来の陶歯
と同様の色調及び透明度を有し、しかも従来の陶歯の約
３倍の衝撃強度を示す人工歯を提供するものである。By molding and firing aluminosilicate glass powder using the same manufacturing method as conventional porcelain teeth, the present invention has the same color tone and transparency as conventional porcelain teeth, and is approximately three times as transparent as conventional porcelain teeth. The purpose of the present invention is to provide an artificial tooth that exhibits impact strength of .
すなわち、本発明に係る人工歯はアルミノ珪酸塩ガラス
を粉末にシテ融着したものであって、そのアルミノ珪酸
塩ガラスは重量で５ｉ０２５５〜６１％、Ｂ２０３０〜
６％、Ａ１２０３１２〜１８％、Ｌｉ２００〜２％、Ｎ
ａ２００〜２％、Ｋ２Ｏ０〜２％、ＭｇＯ６〜１３％、
ＺｎＯ４〜１０％、ＢａＯ０〜３％、Ｃａ００−３％、
Ｔ ｉ ０２０．２〜５％、Ｃｅ０２０．１〜３％、Ｆ
ｅ２０３０〜０．２％、１０〜２％の組成を有している
ことを可とする。That is, the artificial tooth according to the present invention is made by bonding aluminosilicate glass to powder, and the aluminosilicate glass has a content of 5i0255 to 61% by weight and B2030 to
6%, A120312-18%, Li200-2%, N
a200~2%, K2O0~2%, MgO6~13%,
ZnO4-10%, BaO0-3%, Ca00-3%,
T i 020.2~5%, Ce020.1~3%, F
It is allowed to have a composition of e2030 to 0.2% and 10 to 2%.
本発明で使用されるアルミノ珪酸塩ガラスの各成分に関
する量的限定理由は次の通りである。The reasons for quantitative limitations regarding each component of the aluminosilicate glass used in the present invention are as follows.
５ｉ０２及びＡｌ２Ｏ３は高強度低膨張ガラスを得るた
めのガラス形成酸化物である。5i02 and Al2O3 are glass-forming oxides for obtaining high strength, low expansion glasses.
５ｉ０２は高強度、低膨張を得るために５５％以上必要
であるが、６１％を超えると粘性が高くなり、溶解が困
難になる。5i02 is required to have a content of 55% or more in order to obtain high strength and low expansion, but if it exceeds 61%, the viscosity becomes high and it becomes difficult to dissolve.
Ａｌ２Ｏ３はガラスの安定化のために１２％以上必要で
あるが、１８％を超えると不安定になる。12% or more of Al2O3 is required to stabilize the glass, but if it exceeds 18%, it becomes unstable.
Ｂ２Ｏ３はガラスを安定にするが、６％を超えるとチッ
ピングが起こりやすくなる。B2O3 stabilizes the glass, but if it exceeds 6%, chipping tends to occur.
Ｌｉ２Ｏ１Ｎａ２Ｏおよびに２０はガラスの粘度を下げ
るために有効であるが、２％を超えると膨張係数が高く
なる。Li2O1Na2O and Ni20 are effective for lowering the viscosity of the glass, but if it exceeds 2%, the expansion coefficient becomes high.
ＭｇＯはガラスを柔かくする修飾酸化物であって、６％
より少いとガラスの粘度が高く、１３％を超えると不安
定になる。MgO is a modified oxide that softens glass, and 6%
If it is less, the viscosity of the glass will be high, and if it exceeds 13%, it will become unstable.
ＺｎＯはガラスを柔かくし、膨張係数を低（するために
４〜１０％必要である。ZnO is required in an amount of 4 to 10% in order to make the glass soft and have a low expansion coefficient.
ＢａＯ及びＣａＯも３％まで添加できる。BaO and CaO can also be added up to 3%.
天然歯のエナメル質及び象牙質に類似した色調を出すに
は、ＣｅＯ２とＴｉＯ２を共存させることが必須である
。In order to produce a color tone similar to the enamel and dentin of natural teeth, it is essential that CeO2 and TiO2 coexist.
ＴｉＯ２は５％を超えると透明度がなくなる。When TiO2 exceeds 5%, transparency disappears.
ＣｅＯ□は色の濃度の関係で０．１〜３％が適当である
。The appropriate amount of CeO□ is 0.1 to 3% in terms of color density.
Ｆｅ２Ｏ３は色調を制御するために０．２％まで添加で
きる。Fe2O3 can be added up to 0.2% to control color tone.
Ｆはガラスの粘度を下げるために２％までの範囲で添加
でき、通常はＡｌＦ３、ＮａＦ 等の形で添加される
。F can be added in an amount of up to 2% to lower the viscosity of the glass, and is usually added in the form of AlF3, NaF2, etc.
本発明の実施例を表１に示す。Examples of the present invention are shown in Table 1.
実施例１〜４は転移点６９０℃、屈伏点７５０℃熱膨張
係数３８ｘｌＯ’／’ｃのガラスを粉末にし、この粉末
を従来の陶歯と同様の方法で成形、仮焼し、しかる後８
００℃より９７０℃まで５０’Ｃ／ｍの昇温速度で真空
焼成することによって製造された人工歯であって、この
人工歯は市販陶歯の３．３倍の衝撃強度を有していた。In Examples 1 to 4, glass having a transition point of 690°C and a yield point of 750°C and a coefficient of thermal expansion of 38xlO'/'c was powdered, and this powder was molded and calcined in the same manner as conventional porcelain teeth.
This artificial tooth was manufactured by vacuum firing from 00°C to 970°C at a heating rate of 50'C/m, and this artificial tooth had impact strength 3.3 times that of commercially available porcelain teeth. .
尚、衝撃強度は寸法５ Ｘ ８ ｍｒｎ、厚さ１ｍｒＩ
Ｌに両面研磨したサンプルをレールの上にのせ、鉄球を
落下させて破壊する高さで比較した。In addition, the impact strength is 5 x 8 mrn in size and 1 mr in thickness.
A sample L with both sides polished was placed on a rail and an iron ball was dropped to compare the height at which it would break.
本発明による人工歯は化学的耐久性、急熱急冷に対する
スポーリング強度においても優れ、さらに一般のガラス
がチッピングを起しやすいのに比べて、チッピングが起
こらない特長をも有している。The artificial tooth according to the present invention has excellent chemical durability and spalling resistance against rapid heating and cooling, and also has the feature that chipping does not occur compared to ordinary glass, which tends to chip.
Claims (1)
、Ａ１２０３１２〜１８％、Ｌｉ２００〜２％、Ｎａ２
Ｏ０〜２％、Ｋ２Ｏ０〜２％、ＭｇＯ６〜１３％、ｚｎ
Ｏ４〜１０％、Ｂａ０Ｏ〜３％、ＣａＯ０〜３％、Ｔｉ
０２０．２〜５％、ＣｅＯ２０，１〜３％、Ｆｅ２Ｏ３
０−０，２％、１０〜２％の組成を有するアルミノ珪酸
塩ガラスからなる人工歯。1 By weight, 5iO255-61%, B2030-6%
, A120312-18%, Li200-2%, Na2
O0~2%, K2O0~2%, MgO6~13%, zn
O4~10%, Ba0O~3%, CaO0~3%, Ti
020.2-5%, CeO20.1-3%, Fe2O3
Artificial tooth made of aluminosilicate glass with a composition of 0-0.2% and 10-2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54081465A JPS591683B2 (en) | 1979-06-29 | 1979-06-29 | artificial teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54081465A JPS591683B2 (en) | 1979-06-29 | 1979-06-29 | artificial teeth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS567708A JPS567708A (en) | 1981-01-27 |
| JPS591683B2 true JPS591683B2 (en) | 1984-01-13 |
Family
ID=13747140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54081465A Expired JPS591683B2 (en) | 1979-06-29 | 1979-06-29 | artificial teeth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591683B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63287709A (en) * | 1986-12-23 | 1988-11-24 | アメリカン サ−モクラフト コ−ポレ−シヨン | Dental ceramic composition, manufacture and false tooth therefrom |
| DE4428839C2 (en) * | 1994-08-01 | 1997-01-23 | Ivoclar Ag | Alkali-zinc-silicate glass-ceramics and glasses and process for producing the glass-ceramics |
| JP2652781B2 (en) * | 1994-11-30 | 1997-09-10 | ティーディーケイ株式会社 | Glass materials, biological tissue substitutes and orthodontics |
| KR101905370B1 (en) | 2015-09-28 | 2018-10-05 | 미쓰비시덴키 가부시키가이샤 | Electric motor |
-
1979
- 1979-06-29 JP JP54081465A patent/JPS591683B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS567708A (en) | 1981-01-27 |
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