US3928912A - Method for manufacturing of a detachable joint for artificial teeth, and a structural member assembly therefor - Google Patents
Method for manufacturing of a detachable joint for artificial teeth, and a structural member assembly therefor Download PDFInfo
- Publication number
- US3928912A US3928912A US500561A US50056174A US3928912A US 3928912 A US3928912 A US 3928912A US 500561 A US500561 A US 500561A US 50056174 A US50056174 A US 50056174A US 3928912 A US3928912 A US 3928912A
- Authority
- US
- United States
- Prior art keywords
- locking
- crown
- prefabricated
- axle
- blade
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 14
- 238000005266 casting Methods 0.000 claims abstract description 13
- 230000000295 complement effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 102220042337 rs199607550 Human genes 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- A61C13/225—Fastening prostheses in the mouth
- A61C13/273—Fastening prostheses in the mouth removably secured to residual teeth by using bolts or locks
Definitions
- ABSTRACT The invention relates to a method for producing a releasable connection for an artificial tooth, consisting of a lower crown permanently securable on a tooth or on a pillar projecting from the jaw, and of an upper crown surrounding the lower crown and serving as a support for teeth prostheses, the connection pivotally supporting a locking axle having a segment-like cutout, the axle is rotatable by means of a locking blade insertable into the upper surface of the upper crown and cooperating with a partially cylindrical recess in a locking strip which is connected to the lower crown whereby the lower crown together with the locking strip is modelled on a positive mode] of the tooth or of the pillar and the upper crown is modelled on the casting thereof.
- the basis of this invention is, therefore, the problem how to simplify the carrying-out of the above described method and how to facilitate the production of a releasable connection for an artificial tooth of the type 'in question and also how to reduce its cost.
- this problem is solved so that during the modelling of the lower crown there is shaped a prefabricated locking strip having a recess and being cast or integrally molded therewith, that on the completed lower crown, in engagement with the locking strip, is mounted a finished component consisting of a locking axle and a locking blade, the upper crown while incorporating the finished component being modelled on the lower crown, the finished component being removed and a negative form being poured-in or cast, and subsequently the upper crown is cast into the negative form and the finished component being put therein.
- the prefabricated locking strip saves the time consuming individual stretching on the lower crown pattern without preventing an individual selection of the position of the locking strip on the periphery of the lower crown.
- the prefabrication and employment of a finished component consisting of a locking axle and of a locking blade facilitates the modelling of the upper crown and saves the third modelling and casting process for the locking blade.
- a prefabricated locking counterpart which at least partially surrounds the finished component is secured together with the finished component on the completed lower crown and takes part in the modelling of the upper crown.
- the finished component as preferred, is always in its final form, namely the locking axle consisting of steel and the locking blade of gold
- the locking counterpart (as well as the prefabricated locking strip) is advantageously made of a synthetic material which during the casting of the crown as well as the modelling wax are melted out.
- the locking counterpiece which is premodelled to a certain degree guarantees that the finished component in the completed upper crown is correctly supported and that it has a proper contact surface.
- arresting hoses and recesses which arrest the locking blade in the closing position of the locking axle, can be also prefabricated. The same is applicable for a cam which is provided on the locking axle in the region of the locking blade, the cam coopertting with a partially circular recess in the locking counterpiece in order to limit the rotary movement of the locking member.
- the segment-like cutaway portion in the locking axle is made preferably only upon the final insertion of the final component into the upper crown.
- FIG. 1 is a perspective plane view of a completed lower crown
- FIG. 2 is also a perspective view, in the same direction, of an upper crown superimposed on the lower crown of FIG. 1, with open locking means;
- FIG. 3 is a perspective view of the arrangement of FIG. 2 showing, however, the open locking blade from the rear;
- FIG. 4 is an enlarged illustration of the locking strip on the lower crown with the locking axle supported in the upper crown as well as the locking blade in the closed (locked) position;
- FIG. 5 is a cutaway illustration of FIG. 4 in an open position of the locking axle
- FIG. 6 is a perspective illustration of a finished component, prior to its application
- FIG. 7 is a perspective illustration of a locking strip or of a pattern thereof.
- FIG. 8 is a perspective rear view of a locking counterpart as prefabricated for modelling.
- FIGS. 1 to 3 a tooth l which can be also substituted for an implantated pillar or stud projecting from the jaw is merely indicated.
- the lower crown 2 has been produced so that during its modelling on the cast of the tooth or pillar, a prefabricated locking strip 3 (FIG. 7) having partially cylindrical recess 4 had been employed.
- the locking strip 3 consists of a synthetic material which had been burned during the casting so that the locking strip 3a which forms a part of the completed lower crown 2 corresponds as to its form to the prefabricated locking strip 3.
- the side flanks of the strip converge slightly upwardly in order to insure a firm seat of the upper crown while maintaining an easy releasability thereof.
- FIGS. 2 and 3 On the completed lower crown 2 is first for the production of a negative form modelled the upper crown 5 which in FIGS. 2 and 3 is illustrated in its finished state. Besides, a finished component 6 (FIG. 6) is put together with a prefabricated locking counterpiece 7 (FIG. 8) and in the later-on locking position is secured on the lower crown 2 with the aid of the modelling material.
- the locking counterpiece 7 has an opposite surface 8 not seen in FIG. 8 for the locking blade 9 as well as an arresting recess 10 for the arresting boss 11, and a guiding portion 12 for the locking axle 13.
- the locking counterpiece 7 consisting of a synthetic material which had been fired or burned during casting has just as the prefabricated locking strip 3, a partially circular cutout 14 which upon casting cooperates with a cam 15 which is provided on the locking axle 13 in the region of the locking blade 9.
- the finished component 6 consists preferably of final materials, that is of a platinum alloy locking axle l3 and of a locking blade 9 of tooth gold.
- the finished component 6 is inserted into the upper crown 5 (which is not united with the lower crown 2) and is riveted at the end thereof facing the locking blade 9, in maintaining its rotatability the range of which is defined by the recess 14 and the cam 15. Then a partially cylindrical cutout 17 is made in the locking axle 13, which according to FIGS. 4 and 5, makes it possible that in the swung-up open condition of the locking blade 9 the upper crown 5 can be withdrawn from the lower crown 2 whereas in the swung-in condition of the locking blade 9 (in which the arresting boss 11 engages the arresting recess a; FIGS. 2 and 3) the part 18 of the locking axle 13 remaining in the region of the cutout 17 engages the cutout or recess 4a of the locking axle 3a and the upper crown 5 is latched against loosening from the lower crown 2.
- Prefabricated modeling aids for use in preparing an artificial tooth of the kind comprising two crowns releasably secured together and including a first crown cast from a first crown mold prepared from a first crown mold pattern; and a second crown cast from a second crown mold prepared from a second crown mold pattern; said patterns being modeled to conform with each other and the requirements of the jaw whereby the second crown fits over the first crown and is releasably secured thereto; the first crown including a locking strip having a portion removed to define a locking strip recess; the second crown including a rotatably mounted locking part for interengaging with the locking strip in the first crown,
- modeling aids comprising:
- a prefabricated locking part for use in producing in said second crown mold pattern a guide means for said locking part, said locking part being operable for use in said artificial tooth and including a prefabricated locking axle and a prefabricated locking blade secured to said prefabricated locking axle, whereby said axle may be rotated to interengage said locking strip.
- said prefabricated locking axle further including a cam
- said locking blade counterpart defining a partially circular recess resulting in a partially circular recess defined in said second crown which cooperates with said cam to limit the rotation of said locking axle.
- said locking blade being secured to said locking axle at a substantially perpendicular angle whereby said locking blade is positioned close to said second crown in the position wherein said locking axle is interengaged with said locking strip.
- the artificial tooth being of the kind that comprises a lower crown securable on a tooth or on a pillar post projecting from thejaw and an upper crown which fits releasably over the lower crown
- the lower crown being cast in a lower crown mold prepared from a lower crown mold pattern formed to conform to the requirements of the jaw and the artificial tooth
- the upper crown being cast in an upper crown mold prepared from an upper crown mold pattern formed to conform to the requirements of the jaw and to fit over said lower crown
- said lower crown including a locking strip having a portion removed to define a locking strip recess, a guide means defined in the cast upper crown, a locking part including a locking blade and a locking axle, said locking blade secured to said locking axle, said locking axle having a recess portion removed to define a locking axle recess and being rotatably mounted in said guide means whereby, by use of said locking blade, said locking axle may be rotated between opposite locking and unlocking positions, respectively, and
- said locking axle including a cam and said locking blade counterpart modeling aid defining a partially circular recess to form a partially circular recess in said upper crown
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
Abstract
Description
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US500561A US3928912A (en) | 1973-01-16 | 1974-08-26 | Method for manufacturing of a detachable joint for artificial teeth, and a structural member assembly therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32418373A | 1973-01-16 | 1973-01-16 | |
US500561A US3928912A (en) | 1973-01-16 | 1974-08-26 | Method for manufacturing of a detachable joint for artificial teeth, and a structural member assembly therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
US3928912A true US3928912A (en) | 1975-12-30 |
Family
ID=26984332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US500561A Expired - Lifetime US3928912A (en) | 1973-01-16 | 1974-08-26 | Method for manufacturing of a detachable joint for artificial teeth, and a structural member assembly therefor |
Country Status (1)
Country | Link |
---|---|
US (1) | US3928912A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060040234A1 (en) * | 2004-08-17 | 2006-02-23 | Orange County Cosmetic Dental Lab, Inc. | Denture device |
WO2008049594A1 (en) * | 2006-10-24 | 2008-05-02 | Dentacon Gmbh Medizin- Und Dentaltechnik | Device for releasably securing a dental prosthesis |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1673286A (en) * | 1926-05-11 | 1928-06-12 | Inoue Kojiro | Attachment metal fitting for detachable bridge dentures |
-
1974
- 1974-08-26 US US500561A patent/US3928912A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1673286A (en) * | 1926-05-11 | 1928-06-12 | Inoue Kojiro | Attachment metal fitting for detachable bridge dentures |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060040234A1 (en) * | 2004-08-17 | 2006-02-23 | Orange County Cosmetic Dental Lab, Inc. | Denture device |
WO2008049594A1 (en) * | 2006-10-24 | 2008-05-02 | Dentacon Gmbh Medizin- Und Dentaltechnik | Device for releasably securing a dental prosthesis |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1502646A (en) | Mould for making and holding working models for the manufacture of dental prostheses | |
US4229170A (en) | Pontic having an internal ceramic core | |
US4957435A (en) | Dental laboratory die tray | |
US5232365A (en) | Process for producing dental working cast | |
WO2005077296A1 (en) | Method of manufacturing a dental part | |
US4139943A (en) | Dowel pin for making a dental die | |
US3896548A (en) | Dental model construction | |
US3928912A (en) | Method for manufacturing of a detachable joint for artificial teeth, and a structural member assembly therefor | |
US4269595A (en) | Prefabricated non-precious pontic | |
US2797482A (en) | Dental appliance | |
US5674070A (en) | Teeth prosthesis, method of manufacture thereof, method for mounting and removing a suprastructure thereof and kit useful for the manufacture of the teeth prosthesis | |
US5222891A (en) | One-piece cast resin dental dowel with visible horizontal index | |
US4346750A (en) | Method of making dental bridge using a prefabricated non-precious pontic | |
US2705366A (en) | Stationary bridgework | |
US4846682A (en) | Method of fabricating artificial dentures | |
US2889598A (en) | Dental pattern | |
US20050202369A1 (en) | Pontic assembly | |
US4024211A (en) | Casting technique for prosthetic dentistry | |
US20020162642A1 (en) | Process for producing dental devices | |
US1037489A (en) | Process of producing patterns for castings, &c. | |
JP3506383B2 (en) | Extra-crown attachment and method of manufacturing the same | |
US1013666A (en) | Process of making dental inlays. | |
US2797456A (en) | Stress breaker for dental restorations | |
US3561119A (en) | Preformed anterior pontic patterns | |
US833883A (en) | Process for forming dental structures. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SWING-LOCK AG, FREIE STRASSE 47, BASEL, SWITZERLAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:GRAFELMANN, HANS;JUST, FRANZ-PETER;REEL/FRAME:004715/0359 Effective date: 19870204 Owner name: SWING-LOCK AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GRAFELMANN, HANS;JUST, FRANZ-PETER;REEL/FRAME:004715/0359 Effective date: 19870204 |
|
AS | Assignment |
Owner name: JUST, FRANZ-PETER, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SWING-LOCK AG;REEL/FRAME:005128/0256 Effective date: 19881220 Owner name: GRAFELMANN, HANS L., PROF., GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SWING-LOCK AG;REEL/FRAME:005128/0256 Effective date: 19881220 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |