BE488345A - - Google Patents
Info
- Publication number
- BE488345A BE488345A BE488345DA BE488345A BE 488345 A BE488345 A BE 488345A BE 488345D A BE488345D A BE 488345DA BE 488345 A BE488345 A BE 488345A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- tooth
- layer
- pressure
- darker
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
- B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
- A61C13/081—Making teeth by casting or moulding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/021—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles by casting in several steps
- B29C39/025—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles by casting in several steps for making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/002—Coloured
- B29K2995/0021—Multi-coloured
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7532—Artificial members, protheses
- B29L2031/7536—Artificial teeth
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Dentistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Procédé pour l'exécution de dents artificielle* en résine synthétique.
L'invention concerne un procède pour l'exécution de
dents artificielles en résine synthétique, constituées par
<EMI ID=1.1>
nient que toutes les couchée mont formées en une seule opé-
<EMI ID=2.1> de combiner en un tout homogène les différentes couchez prévues dans la structure de la dent. Ceci n'est pas réa-
<EMI ID=3.1>
oifique moins élevée que les autres couche,. De ce fait
cette couche extérieure précisément acquiert une densité moin-
<EMI ID=4.1>
férieures alora qu'elle devrait offrir la résistance la plus élevés. Il en résulte une uaure rapide de telles dents. En outre, dans le procédé consistant à réunir les différentes couches de la dent par une seule opération de moulage sous pression, on peut difficilement éviter des déplacements et
<EMI ID=5.1>
qui concerne la solidité, aussi au point de vue de l'aspect de �a dent, vu que le dégrade recherché dans l'effet de transparence des différentes couches s'en trouve gâté, de
<EMI ID=6.1>
fait que chaque couche est constituée à l'aide d'une opération de roulage sous pression diatinote. Selon une autre ca.-
<EMI ID=7.1>
façon que la couche déjà coulée constitue un uoule pour la couche intérieure suivante. A cette fin, on eaploie avanta-
<EMI ID=8.1> tituée lors de la première opération de pression est à nouveau soumise à la pression lors de chacune des opérations de pression suivantes visant la constitution des cou-
<EMI ID=9.1>
pression beaucoup plus forte et donc une dureté plus élevée, notamment dans la surface triturante ou le bord tranchant
(surface libre), particulièrement sujets à l'usure lors de la mastication, alors que dans le procédé à opération de pression unique employé à ce jour, la plus forte compression se produit à la surface inférieure de la dent (collet) donc précisément à l'endroit qui n'est soumis à aucune usure.
Le dessin montre à titre d'exemple un mode d'application de l'invention à l'exécution d'une molaire à savoir La figure 1 est une coupe de la dent terminée.
Les figures 2 et 7 montrent les différentes phases du procédé de moulage sous pression.
La dent est constituée par une couche extérieure translucide et claire 1, qui correspond à l'émail de la dent, une couche intermédiaire 2 plus foncée et moins translucide, voi-
<EMI ID=10.1>
noyau 3, enoore plus foncé et qui correspond au cément. Selon -'invention et afin d'imiter la structure d'une dent na-
<EMI ID=11.1>
te que oette dernière apparaît de plus en plus foncée en allant de la surface li�re vers le collet.
La dent est exécutée dans une matrice 4. Le. surface tri-
<EMI ID=12.1>
se trouve en haut. Les figures 2 à 7 montrent les différentes phases du procédé. La matrice 4, laquelle se divise en deux parties par le milieu, reçoit d'abord dans sa cavité
<EMI ID=13.1> finitive en la soumettant à la pression d'un poinçon 6
<EMI ID=14.1>
de la surface extérieure, on obtient un moulage absolument parfait des surfaces de faible oourbure 5, ainsi que des surfaces de forte courbure., ainsi qu'une structure de grande densité. La couche extérieure 1 sert ensuite de moule pour la. couche intermédiaire 2. A cette fin, la couche 1 reçoit la masse destinée à la formation de la couche médiane
<EMI ID=15.1>
au noyau 3, que l'on forme à l'aide d'un poinçon 8 plus court que le précédent et qii affleure le collet de la dent.
<EMI ID=16.1>
à la prévision d'une opération distincte de moulage sous pression pour chaque couche.
Le mode d'exécution ci -après a été reconnu cornue particulièrement avantageux;
<EMI ID=17.1>
oeuvre de la. présente invention, cel-e-ci se caractérise toujours par une opération de roulage sous pression diatinc-
<EMI ID=18.1>
REVENDICATIONS
<EMI ID=19.1> <EMI ID=20.1>
sine synthétique constituées par des couche* de coloration et de degrés de transparence différents, caractérisé par une opération distincte de moulage sous pression pour ohaque couche.
Process for the execution of artificial teeth * in synthetic resin.
The invention relates to a method for performing
artificial teeth in synthetic resin, formed by
<EMI ID = 1.1>
deny that all the lying mounts formed in a single operation
<EMI ID = 2.1> to combine into a homogeneous whole the different layers provided in the tooth structure. This is not real
<EMI ID = 3.1>
oific lower than the other layers ,. Thereby
precisely this outer layer acquires a lower density.
<EMI ID = 4.1>
fares alora that it should offer the highest resistance. This results in rapid wear of such teeth. Further, in the process of bringing together the different layers of the tooth by a single pressure casting operation, it is difficult to avoid displacements and
<EMI ID = 5.1>
which concerns the solidity, also from the point of view of the aspect of the tooth, since the desired degradation in the effect of transparency of the different layers is spoiled, of
<EMI ID = 6.1>
that each layer is formed using a rolling operation under diatinote pressure. According to another ca.-
<EMI ID = 7.1>
so that the already poured layer forms an uoule for the next inner layer. To this end, we employ before
<EMI ID = 8.1> tituated during the first pressure operation is again subjected to the pressure during each of the following pressure operations aimed at the constitution of the joints.
<EMI ID = 9.1>
much higher pressure and therefore higher hardness, especially in the grinding surface or cutting edge
(free surface), particularly subject to wear during chewing, whereas in the single pressure operation process employed to date, the strongest compression occurs at the lower surface of the tooth (neck) so precisely at the place that is not subject to any wear.
The drawing shows by way of example one mode of application of the invention to the execution of a molar, namely FIG. 1 is a section of the finished tooth.
Figures 2 and 7 show the different phases of the die-casting process.
The tooth consists of a translucent and clear outer layer 1, which corresponds to the enamel of the tooth, a darker and less translucent middle layer 2, voi-
<EMI ID = 10.1>
core 3, even darker and corresponding to cement. According to the invention and in order to imitate the structure of a natural tooth
<EMI ID = 11.1>
As this last appears darker and darker going from the free surface towards the collar.
The tooth is executed in a matrix 4. The. tri- surface
<EMI ID = 12.1>
is at the top. Figures 2 to 7 show the different phases of the process. The matrix 4, which is divided into two parts in the middle, receives first in its cavity
<EMI ID = 13.1> final by subjecting it to the pressure of a punch 6
<EMI ID = 14.1>
from the outer surface, an absolutely perfect molding of the low curvature surfaces, as well as the high curvature surfaces, is obtained, as well as a high density structure. The outer layer 1 then serves as a mold for the. intermediate layer 2. To this end, layer 1 receives the mass intended for the formation of the middle layer
<EMI ID = 15.1>
at the core 3, which is formed using a punch 8 shorter than the previous one and which is flush with the neck of the tooth.
<EMI ID = 16.1>
the provision of a separate die-casting operation for each layer.
The embodiment below has been recognized as particularly advantageous;
<EMI ID = 17.1>
work of the. present invention, it is still characterized by a rolling operation under diatinc-
<EMI ID = 18.1>
CLAIMS
<EMI ID = 19.1> <EMI ID = 20.1>
Synthetic sine made up of layers * of different coloring and degrees of transparency, characterized by a separate die-casting operation for each layer.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT998598X | 1948-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE488345A true BE488345A (en) |
Family
ID=3683909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE488345D BE488345A (en) | 1948-04-07 |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE488345A (en) |
FR (1) | FR998598A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2536654A1 (en) * | 1982-11-30 | 1984-06-01 | Duret Francois | METHOD FOR PRODUCING A DENTAL PROSTHESIS |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19654055C2 (en) * | 1996-12-23 | 1998-11-12 | Heraeus Kulzer Gmbh | Semi-finished product as a shaped body for the manufacture of dental prosthetic items |
WO2011041193A1 (en) * | 2009-09-30 | 2011-04-07 | 3M Innovative Properties Company | Systems and methods for making layered dental appliances from the outside in |
DE102015112800A1 (en) * | 2015-04-09 | 2016-10-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Multi-part dental prosthesis and method and device for its production |
AU2018201914B1 (en) * | 2018-03-16 | 2018-10-18 | John Fung | Method and apparatus for forming a prosthetic tooth element |
-
0
- BE BE488345D patent/BE488345A/fr unknown
-
1949
- 1949-04-06 FR FR998598D patent/FR998598A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2536654A1 (en) * | 1982-11-30 | 1984-06-01 | Duret Francois | METHOD FOR PRODUCING A DENTAL PROSTHESIS |
EP0110797A1 (en) * | 1982-11-30 | 1984-06-13 | François Duret | Process for producing a dental prosthesis |
Also Published As
Publication number | Publication date |
---|---|
FR998598A (en) | 1952-01-21 |
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