DE869617C - Process for the production of a plaster of paris for dental purposes - Google Patents

Process for the production of a plaster of paris for dental purposes

Info

Publication number
DE869617C
DE869617C DEU1278A DEU0001278A DE869617C DE 869617 C DE869617 C DE 869617C DE U1278 A DEU1278 A DE U1278A DE U0001278 A DEU0001278 A DE U0001278A DE 869617 C DE869617 C DE 869617C
Authority
DE
Germany
Prior art keywords
plaster
paris
dental purposes
production
mixed
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
Application number
DEU1278A
Other languages
German (de)
Inventor
Heinrich Dr Phil Utiger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEU1278A priority Critical patent/DE869617C/en
Application granted granted Critical
Publication of DE869617C publication Critical patent/DE869617C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/34—Metals, e.g. ferro-silicon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/024—Ingredients added before, or during, the calcining process, e.g. calcination modifiers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00836—Uses not provided for elsewhere in C04B2111/00 for medical or dental applications

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

Verfahren zur Herstellung eines Gipses für zahnärztliche Zwecke Zur Herstellung eines Kunstharzgebisses oder einer Kautschukprothese braucht der Zahnarzt oder Techniker gebrannten Gips als Einbettmasse. In diesem Gips wird nun die herzustellende Kunstharzmasse z. B. als formlose Masse eingeschlossen, das Ganze in eine Küvette gebracht und einem Wärmeprozeß unterworfen.Process for the production of a plaster of paris for dental purposes Zur The dentist needs to produce synthetic resin dentures or a rubber prosthesis or technician fired plaster of paris as an investment. In this plaster of paris is now the one to be produced Synthetic resin compound z. B. enclosed as a shapeless mass, the whole thing in a cuvette brought and subjected to a heating process.

Dieser Prozeß wird in der Weise durchgeführt, daß z. B. die gefüllte Küvette in ein offenes Wasserbad gebracht wird; das Wasser wird auf Siedetemperatur erhitzt und die Küvette je nach dem Grad der Polymerisation etwa 3/4 Stunden darin belassen.This process is carried out in such a way that e.g. B. the filled The cuvette is placed in an open water bath; the water is at the boiling point heated and the cuvette in it for about 3/4 hours, depending on the degree of polymerisation left.

Hierbei wird durch die Wärmezufuhr die Polymerisation des Kunstharzes durchgeführt, so daß nach Beendigung des chemischen Prozesses die erhärtete Masse glasartiges Aussehen aufweist.The polymerisation of the synthetic resin is caused by the supply of heat carried out, so that after completion of the chemical process, the hardened mass has a glass-like appearance.

Durchgeführte Wärmemessungen während einer Polymerisation haben nun aber überraschenderweise gezeigt, .daß der Gipsblock, der sich in der Kü.vette befindet, nie die Temperatur aufweist, wie das ihn umgebende Wasser. Im Gipsblock herrscht eine beträchtliche Untertemperatur, die, je nach Art des Gipses, zwischen ro und .2o' unter der des Wassers liegt. Diese Untertemperatur kommt nun aber nicht durch das schlechte Leitvermögen des Gipses allein zustande, sondern auch durch den wärmeabsorbierenden Vorgang der Polymerisation, der ebenfalls ein Beträchtliches an Kalorien verbraucht.Heat measurements carried out during a polymerization now have but surprisingly showed that the plaster block in the flask never has the same temperature as the surrounding water. In the plaster block there is a considerable undertemperature which, depending on the type of plaster, between ro and .2o 'below that of the water. However, this sub-temperature does not come through the poor conductivity of the plaster of paris is caused by the heat-absorbing properties Polymerization process, which also consumes a considerable amount of calories.

Diese Temperaturschwankungen während des Polymerisationsvorganges -rufen in dem herzustellenden Material bedeutende Spannungen hervor, derart, daß das Fertigerzeugnis sehr leicht zu Rißbildungen neigt, was auf die Qualität verschlechternd wirkt. In einem gewissen Moment sogar tritt eine endotherme Reaktion von kurzer Dauer in Erscheinung. Infolge der schlechten Wärmeverteilung und W'ärmeableitun -. des. Gipses werden Spannungen dadurch noch beträchtlich erhöht.These temperature fluctuations during the polymerization process - cause significant stresses in the material to be manufactured, such that the finished product tends to crack very easily, which has a detrimental effect on the quality works. At a certain moment even an endothermic reaction of short duration occurs Duration in appearance. As a result of poor heat distribution and heat dissipation -. The plaster of paris tensions are thereby increased considerably.

Die Erfindung betrifft nun ein Verfahren zur Herstellung eines Gipses für zahnärztliche Zwecke, durch welchen die erwähnten Nachteile beseitigt oder aber wesentlich vermindert werden.The invention now relates to a method for producing plaster of paris for dental purposes, through which the disadvantages mentioned are eliminated or else can be significantly reduced.

- Überraschenderweise hat sich herausgestellt, daß durch,Zufügen eines metallischen Wärmeleiters die Wärmeregulierung bedeutend verbessert wird, so daß z. B. der exotherme Vorgang der Kunstharzhärtung durch den Zusatz eines metallischen Leiters gemäßigt wird.- Surprisingly, it turned out that by adding a metallic heat conductor, the heat regulation is significantly improved, so that z. B. the exothermic process of synthetic resin hardening through the addition of a metallic Head is tempered.

Das Verfahren wird beispielsweise wie folgt ausgeführt: I. Zoo Gramm gebrannter Gips werden mit ioo Gramm Eisenpulver vermischt und das Ganze mit einer genügenden Wassermenge vermengt. Die Mischung fängt nun an, langsam zu erhärten. II. Zu 25o Gramm- gebranntem Gips werden 5o Gramm Aluminiumpulver hinzugefügt, das Ganze wird mit Wasser vermengt, wobei die Mischung ebenfalls erhärtet.For example, the procedure is carried out as follows: I. Zoo grams Burned plaster of paris is mixed with 100 grams of iron powder and the whole thing with a mixed with sufficient amount of water. The mixture will now begin to harden slowly. II. To 250 grams of plaster of paris are added 50 grams of aluminum powder, the The whole thing is mixed with water, whereby the mixture also hardens.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung eines Gipses für zahnärztliche Zwecke, dadurch gekennzeichnet, daß zur Verbesserung der Wärmeleitung des Gipses derselbe mit einem metallischen Leiter, wie Eisen- öder Aluminiumpulver, vermischt wird. PATENT CLAIMS: i. Method of making a plaster of paris for dental Purposes, characterized in that to improve the heat conduction of the plaster the same mixed with a metallic conductor such as iron or aluminum powder will. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß der metallische Leiter dem Gipsmaterial vor dem Brennen beigefügt wird. 2. The method according to claim i, characterized in that the metallic Head is attached to the plaster of paris material before firing. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß der metallische Leiter dem Gips nachdem Brennen zugemischt wird.3. The method according to claim i, characterized in that the metallic conductor is mixed with the plaster of paris after firing will.
DEU1278A 1951-08-04 1951-08-04 Process for the production of a plaster of paris for dental purposes Expired DE869617C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEU1278A DE869617C (en) 1951-08-04 1951-08-04 Process for the production of a plaster of paris for dental purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU1278A DE869617C (en) 1951-08-04 1951-08-04 Process for the production of a plaster of paris for dental purposes

Publications (1)

Publication Number Publication Date
DE869617C true DE869617C (en) 1953-03-05

Family

ID=7565054

Family Applications (1)

Application Number Title Priority Date Filing Date
DEU1278A Expired DE869617C (en) 1951-08-04 1951-08-04 Process for the production of a plaster of paris for dental purposes

Country Status (1)

Country Link
DE (1) DE869617C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929348C (en) * 1953-01-27 1955-06-23 Elisabeth Legrand Process for the production of decomposable plaster molds
DE1295750B (en) * 1960-03-31 1969-05-22 Elling Harald Dr Impression material for dental purposes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929348C (en) * 1953-01-27 1955-06-23 Elisabeth Legrand Process for the production of decomposable plaster molds
DE1295750B (en) * 1960-03-31 1969-05-22 Elling Harald Dr Impression material for dental purposes

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