CN101073517B - Detachable fixed denture and its production - Google Patents
Detachable fixed denture and its production Download PDFInfo
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- CN101073517B CN101073517B CN2007101176631A CN200710117663A CN101073517B CN 101073517 B CN101073517 B CN 101073517B CN 2007101176631 A CN2007101176631 A CN 2007101176631A CN 200710117663 A CN200710117663 A CN 200710117663A CN 101073517 B CN101073517 B CN 101073517B
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- nut
- inlay
- hat
- stake nuclear
- nuclear
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Abstract
The invention is concerned with a kind of disassembling fixing false tooth and its produce method. The false tooth insets with a nut on the top of nuclear peg made of residual crowns and roots or the embedded body inside of marrow cavity of necrotic teeth. There are holes with same inner diameter at the position of nut on the inner crown and outer crown of the false tooth, the said inner crown fixes on the nuclear peg and embedded body, and the said outer crown fixes on the nut through the matched snail. Inset a nut at the top of nuclear peg when making the residual crowns and roots as nuclear peg, or inset nut at the top of embedded body when making embedded body with marrow cavity, and make holes with same inner diameter at the position of nut on the inner crown and outer crown of the false tooth. The outer crown fixes on the nut through matching snail after fixing the inner crown on the nuclear peg and embedded body. It has the excellences of existing false tooth and can be disassembled to maintaining and cleanness in certain period.
Description
Technical field
The present invention relates to the structure of artificial tooth, particularly a kind of detachable fixed denture and preparation method thereof.
Background technology
At present, the fixed denture manufacture method is after utilizing residual crown, undesirable root to cast out stake nuclear or inlay, to produce outer hat again, directly is bonded on stake nuclear or the inlay with cement, can't dismantle.The traditional fixed denture and the connected mode of abutment mainly are to use the inorganic salts cement to bond, though the denture retention of this maintenance mode is good, volume is little, the patient feels comfortable, but also there are many problems, after collapsing porcelain as ceramic crown, owing to can't dismantle, mending porcelain can only carry out in patient's mouth, has limited the application of mending the porcelain method.Simultaneously, the not easy to clean also easy secondary adjacent teeth dental caries of extended immobilization, root dental caries and periodontitis etc.
Summary of the invention
The objective of the invention is to, can not dismantle in order to overcome the existing fixed artificial tooth, the deficiency of can't periodic cleaning safeguarding, thus a kind of detachable fixed denture and preparation method thereof is provided.
For achieving the above object, a kind of detachable fixed denture provided by the invention is characterized in that, the top of the inlay in the pulp cavity of the top of the stake nuclear that undesirable root, residual crown are made or devital tooth embeds a nut; The interior hat of described fixed denture and outer hat have the hole onesize with the internal diameter of nut corresponding to the position of nut, and described interior hat cements on stake nuclear or the inlay, and the described outer screw of being preced with by coupling is fixed on the nut.
A kind of preferred as technique scheme, described screw and nut are made by titanium alloy.
As a kind of improvement of technique scheme, described nut is provided with external screw thread.This is externally threaded act as and inlay or stake nuclear between strengthen friction, strengthen the combination between them.
As another improvement of technique scheme, the cap nut of described screw is " one " word groove, groove depth 0.2mm, groove width 0.4mm.
Another object of the present invention is to, a kind of preparation method of detachable fixed denture is provided, when this method is made stake nuclear at undesirable root, the residual crown of abutment, top at stake nuclear embeds a nut, or when when devital tooth prepares, utilizing its pulp cavity to make inlay, at the top of inlay inserted num, and keep somewhere and the onesize hole of internal diameter of nut at the corresponding site of the interior hat of fixed denture and outer hat; Then, after interior hat cements on stake nuclear or the inlay, the screw of being preced with by coupling is fixed on maintenance on the nut outward.
The step of this method comprises:
1) the tooth body is made the wax pattern of stake nuclear or inlay and interior hat respectively after preparation;
2) embed the nut of suitable dimension at the top of the wax pattern of stake nuclear or inlay: at first, the nut fixed bar of one diameter less than the nut diameter is fixed in the nut, again nut is imbedded the appropriate location of the wax pattern of stake nuclear or inlay, finish the casting of stake nuclear or inlay foundry goods through embedding, roasting, dewax, at last, take out the nut fixed bar; The wax pattern of interior hat is preced with the casting of foundry goods in embedding, roasting, dewax are finished;
3) stake nuclear or inlay foundry goods and interior hat foundry goods are tried on and are ground: stake nuclear or inlay foundry goods and interior hat foundry goods are obtained common path of insertion through the beveller polishing; Try in mouthful suitable after, with zinc phosphate cement interior hat is adhered on stake nuclear or the inlay;
4) produce outer hat die, model: at first, select corresponding lead screw succedaneum to twist on the nut in stake nuclear or inlay, conventional impression taking, then, the lead screw succedaneum is taken out in mouth, get again together that the sample specifications of nuts is screwed in the lead screw succedaneum, place the die relevant position, record the super hard gypsum model;
5) making of outer hat wax pattern: on the outer hat wax pattern of lead screw relevant position, should reserve the hole with the same diameter of lead screw, and utilize the cap nut succedaneum to reserve the embedded space of cap nut in the relevant position;
6) it is passive in place to cast good outer hat, will be preced with by screw outward to be fixed on the nut.
As another improvement of said method, described lead screw succedaneum is divided into threaded portion and smooth part, has threaded portion consistent with lead screw thickness length.
As another improvement of said method, the cap nut succedaneum in the described step 5) is the annulus lamellar, and its external diameter is consistent with the diameter of cap nut, and internal diameter is consistent with the diameter of lead screw.
The invention has the advantages that the present invention can make full use of patient's residual crown, undesirable root and devital tooth, can keep the advantage that the existing fixed artificial tooth is attractive in appearance, comfortable, gmatjpdumamics is strong, can dismantle easily again, carry out periodic cleaning and safeguard.
Description of drawings
Fig. 1 is the generalized section of detachable fixed denture of the present invention.
The accompanying drawing sign
1, tooth body 2, stake nuclear 3, nut
4, interior hat 5, be preced with 6 outward, screw
The specific embodiment
Describe detachable fixed denture provided by the present invention and preparation method thereof in detail below in conjunction with accompanying drawing.
As shown in Figure 1, tooth body 1 is made stake nuclear 2 after preparing, and at its top inserted num 3, keeps somewhere onesize hole at the corresponding site of crown and sleeve-coping, behind interior hat 4 cementations, be preced with outward 5 passive in place, fixing with screw 6.
When undesirable root, the residual crown of selected abutment are made stake nuclear, embed a nut on its top, or when devital tooth prepares, utilize its pulp cavity to make inlay, at its top inserted num, and in the onesize hole of corresponding site indwelling of crown and sleeve-coping, behind the interior hat cementation, outer hat is passive in place, fixes with screw; Vital tooth designs nut in the adjacent gap side of interior hat.
In this example, screw, nut are made by titanium alloy.Nut can be divided into L1, L2 and three kinds of specifications of L3 by length: L1 length is 3mm, and L2 length is 3.5mm, and L3 length is 4.0mm; Be divided into M1, M2 and three kinds of specifications of M3 by thickness: the M1 internal diameter is 1mm, and external diameter is 1.6mm; The M2 internal diameter is 1.2mm, and external diameter is 1.8mm; The M3 internal diameter is 1.4mm, and external diameter is 2.0mm; Internal diameter pitch is 0.25mm, and external diameter is 0.4mm.Like this, nut makes up totally nine kinds of specifications according to thickness and length, can select according to length, thickness, the stressed size of root pipe, pulp cavity.The nut outside can also further be provided with external screw thread, and the friction with between increasing and inlay or the stake nuclear strengthens the combination between them.
Screw and nut are complementary also to divide and make nine kinds of specifications, and wherein, lead screw also is divided into M1, M2 and three kinds of specifications of M3 by thickness, and its diameter is respectively 1mm, 1.2mm and 1.4mm; Also be divided into L1, L2 and three kinds of specifications of L3 by length, length is respectively 3mm, 3.5mm and 4.0mm.
The diameter of all specifications of cap nut, highly all identical, diameter are 2.0mm, highly are 0.5mm, are " one " word groove, groove depth 0.2mm, groove width 0.4mm.
Method of the present invention is described below set by step.
1) the tooth body is made after preparing in stake nuclear or the inlay and is preced with wax pattern;
2) top of being preced with in stake nuclear or inlay embeds the nut of suitable dimension: at first, the nut fixed bar of one diameter less than the nut diameter is fixed in the nut, again nut is imbedded the appropriate location of hat wax pattern in stake nuclear or the inlay, finish casting through embedding, roasting, dewax, at last, take out the nut fixed bar;
3) hat is tried on and is ground in stake nuclear or the inlay: will obtain common path of insertion through the beveller polishing by the hat foundry goods in stake nuclear, the inlay, try in mouthful suitable after, adhere with zinc phosphate cement;
4) produce outer hat and artificial tooth die, model: at first, select corresponding lead screw succedaneum to twist on the nut in stake nuclear or inlay, conventional impression taking, then, the lead screw succedaneum is taken out in mouth, get together sample specifications of nuts again, be screwed in the lead screw succedaneum, place the die relevant position, record the super hard gypsum model;
5) making of outer hat wax pattern: on the outer hat wax pattern of lead screw relevant position, should reserve the hole with the same diameter of lead screw, and utilize the cap nut succedaneum to reserve the embedded space of cap nut in the relevant position;
6) it is passive in place to cast good outer hat, and screw is fixed.
In this example, cap nut succedaneum external diameter is consistent with the diameter of cap nut, is 2.0mm, and internal diameter is consistent with the diameter of lead screw, can have 3 kinds, is respectively 1mm, 1.2mm and 1.4mm, highly is 0.5mm, amounts to 3 kinds of specifications.Substitute screw terminal when being mainly used in outer hat waxing and label occupied locus, surface outside, make that outer hat spiral shell is solid after, screw terminal just in time is entrenched in outer labeling.
The lead screw succedaneum, it is divided into stricture of vagina part and smooth part, has the stricture of vagina part consistent with lead screw thickness length, i.e. and M1, M2, M3 and L1, the two combination of L2, L3 be totally 9 kinds of specifications, and no stricture of vagina part thickness is 1.5mm, 1.7mm and 1.9mm, is about 0.5mm.Lead screw succedaneum and cap nut succedaneum are that coupling is used, and are used for determining nut location and alternative screw rod when being preced with wax pattern at delivery with outside making.
Nut fixed bar, its diameter are less than the nut diameter, and slightly about 0.5mm is about 2cm.When casting stake nuclear or inlay nut is fixed in the casting intracavity, makes unlikely coming off behind its dewax, also available pulp canal reamer substitutes when operation.
Claims (8)
1. a detachable fixed denture is characterized in that, the top of the inlay in the pulp cavity of the top of the stake nuclear that undesirable root, residual crown are made or devital tooth embeds a nut; The interior hat of described fixed denture and outer hat have the hole onesize with the internal diameter of nut corresponding to the position of nut, and described interior hat cements on stake nuclear or the inlay, and the described outer screw of being preced with by coupling is fixed on the nut.
2. detachable fixed denture according to claim 1 is characterized in that described screw and nut are made by titanium alloy.
3. detachable fixed denture according to claim 1 is characterized in that described nut is provided with external screw thread.
4. detachable fixed denture according to claim 1 is characterized in that, the cap nut of described screw is " one " word groove, groove depth 0.2mm, groove width 0.4mm.
5. the preparation method of a detachable fixed denture, when this method is made stake nuclear at undesirable root, the residual crown of abutment, top at stake nuclear embeds a nut, or when when devital tooth prepares, utilizing its pulp cavity to make inlay, at the top of inlay inserted num, and keep somewhere and the onesize hole of internal diameter of nut at the corresponding site of the interior hat of fixed denture and outer hat; Then, after interior hat cements on stake nuclear or the inlay, the screw of being preced with by coupling is fixed on maintenance on the nut outward.
6. the preparation method of detachable fixed denture according to claim 5 is characterized in that, the step of this method comprises:
1) the tooth body is made the wax pattern of stake nuclear or inlay and interior hat respectively after preparation;
2) embed the nut of suitable dimension at the top of the wax pattern of stake nuclear or inlay: at first, the nut fixed bar is fixed in the nut, again nut is imbedded the appropriate location of the wax pattern of stake nuclear or inlay, finish the casting of stake nuclear or inlay foundry goods through embedding, roasting, dewax, at last, take out the nut fixed bar; The wax pattern of interior hat is preced with the casting of foundry goods in embedding, roasting, dewax are finished;
3) stake nuclear or inlay foundry goods and interior hat foundry goods are tried on and are ground: stake nuclear or inlay foundry goods and interior hat foundry goods are obtained common path of insertion through the beveller polishing; Try in mouthful suitable after, with zinc phosphate cement interior hat foundry goods is adhered on stake nuclear or the inlay foundry goods;
4) produce outer hat die, model: at first, select corresponding lead screw succedaneum to twist on the nut in stake nuclear or inlay foundry goods, conventional impression taking, then, the lead screw succedaneum is taken out in mouth, get again together that the sample specifications of nuts is screwed in the lead screw succedaneum, place the die relevant position, record the super hard gypsum model;
5) making of outer hat wax pattern: on the outer hat wax pattern of lead screw relevant position, should reserve the hole with the same diameter of lead screw, and utilize the cap nut succedaneum to reserve the embedded space of cap nut in the relevant position;
6) it is passive in place to cast good outer hat, will be preced with by screw outward to be fixed on the nut.
7. the preparation method of detachable fixed denture according to claim 6 is characterized in that, described lead screw succedaneum is divided into threaded portion and smooth part, has threaded portion consistent with lead screw thickness length.
8. the preparation method of detachable fixed denture according to claim 6 is characterized in that, the cap nut succedaneum in the described step 5) is the annulus lamellar, and its external diameter is consistent with the diameter of cap nut, and internal diameter is consistent with the diameter of lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101176631A CN101073517B (en) | 2007-06-21 | 2007-06-21 | Detachable fixed denture and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101176631A CN101073517B (en) | 2007-06-21 | 2007-06-21 | Detachable fixed denture and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101073517A CN101073517A (en) | 2007-11-21 |
| CN101073517B true CN101073517B (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101176631A Expired - Fee Related CN101073517B (en) | 2007-06-21 | 2007-06-21 | Detachable fixed denture and its production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101073517B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620444A (en) * | 2019-01-25 | 2019-04-16 | 昆明好合义齿制作有限公司 | A kind of fixed artificial tooth fabrication processing |
| CN113456264A (en) * | 2021-08-16 | 2021-10-01 | 茵伯特(上海)医疗技术有限公司 | Method, system and storage medium for manufacturing implanted dental crowns based on database files |
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2007
- 2007-06-21 CN CN2007101176631A patent/CN101073517B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101073517A (en) | 2007-11-21 |
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