WO1995019741A1 - Impression plates for dental use and mode of construction - Google Patents

Impression plates for dental use and mode of construction Download PDF

Info

Publication number
WO1995019741A1
WO1995019741A1 PCT/IT1994/000017 IT9400017W WO9519741A1 WO 1995019741 A1 WO1995019741 A1 WO 1995019741A1 IT 9400017 W IT9400017 W IT 9400017W WO 9519741 A1 WO9519741 A1 WO 9519741A1
Authority
WO
WIPO (PCT)
Prior art keywords
impression
plate
impression plate
titanium alloy
lid
Prior art date
Application number
PCT/IT1994/000017
Other languages
French (fr)
Inventor
Guido Ivo Tissi
Luca Modena
Original Assignee
Guido Ivo Tissi
Luca Modena
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 Guido Ivo Tissi, Luca Modena filed Critical Guido Ivo Tissi
Priority to AU62903/94A priority Critical patent/AU6290394A/en
Publication of WO1995019741A1 publication Critical patent/WO1995019741A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/0006—Impression trays

Definitions

  • the invention concerns impression plates for dental use and the process followed in making them.
  • the ordinary impression plates used by dentists are generally known.
  • caps, prostheses or fixing means have to be specially constructed.
  • Dentists therefore use impression plates of different shapes and sizes to suit the dental arches of their pa ⁇ tients and having first filled such a plate with a fluid material which gradually hardens, it is then placed on the patient's upper or lower dental arch as required. As soon as an impression of the teeth has been taken the plate is removed from the patient's mouth and later sent to the dental laboratory which makes the prosthesis. An impression plate used for one patient must of course be properly sterilized before being used for another. This is extremely important in view of information recently acquired about diseases, including the serious risk of AIDS and because the most frequent vehicle of infection is the blood which almost inevitably seeps out during dental work. Because of their substantially complex and varied struc ⁇ tures, these impression plates are made of a number of pieces welded together.
  • Subject of the invention is a process for making impres ⁇ sion plates for dental purposes. All parts - base, walls inwardly-turned rims, protuber- ances, cavities, inscriptions and the like - are made by bending and shaping a sheet of material without welds, added pieces, sharp corners, fissures or hidden crevices.
  • the impression plates so made therefore consist of a single piece. The purpose of this is to avoid inaccessible recesses or cavities and so facilitate thorough cleansing, steriliza ⁇ tion and disinfection, to prevent development, and proli ⁇ feration, of pathogenous micro-organisms. All bends follow arcs of a circle.
  • the material used is a titanium alloy which is biocompatibl stainless, acid-proof; it also offers high resistance to corrosion caused by pitting in environments containing halids as well as high mechanical strength.
  • Composition of this titanium alloy is preferably Ni-Cr-Mo-C-T
  • the quantity of carbon is preferably about 0.08% and that of titanium between 0.1 and 10%.
  • Minimum quantity of titanium is preferably 0.5%. Inscriptions are engraved by micro e rical electric dis ⁇ charge machining, this method being adopted to prevent formation of inaccessible recesses in the surface.
  • the axial semicy1indrico- -conical upper surface of the impression contains axial ear-shaped projections one in line with the other, also substantially conical and open at the front. These projections help to keep the impression in place while the open front ends make it easy to clean them tho ⁇ roughly .
  • ear-shaped projections there are two ear-shaped projections.
  • An inclined rim on the rear and side walls projects inwards, this one also bent in the arc of a circle, and extends alonj the entire length between the arched area at the front of of the plate and a V-shaped axial area at the rear.
  • the inner and outer walls of the impression plate for the lower horseshoe-shaped arch have, on their upper edge, an inward-facing rim formed of material bent in the arc of a circle.
  • the handles are rectangular and are placed axially. Each plate is packed separately in a box-shaped structure large enough to receive the whole plate.
  • This box is of disposable plastic material and consists of a lower container and a lid.
  • the lower container has a horizontal outward-facing edge and the lid a similar one in addition to an upright outer edge.
  • the horizontal edges of both lower container and lid thus fit together, extra protection being assured by the surrounding vertical edge which encloses the horizontal edge .
  • the titanium alloy adopted ensures maximum resistance to corrosion and to mechanical stresses, maximum biocompati- bility while making thinner walls possible in various parts of the plate.
  • Plates can thus be lighter and less bulky without impair ⁇ ing resistance to mechanical and chemical stresses. Impressions in the plate are held in place by projections of suitable shapes and sizes without creating the undesi- rable recesses referred to above.
  • Fig.1 Plan view of the impression plate for an upper arch.
  • Fig.5 Plan view of the impression plate for a lower arch.
  • Fig.6 Profile view of the plate in Fig. 5.
  • Fig. 7 Longitudinal section of the plate in Fig.5
  • Fig. 8 The above plate seen from the back, partially cut away .
  • FIG. 9 Perspective view of the container in which there is an impression plate and an impression for the lower arch .
  • FIG.10 Perspective view of the container holding an im ⁇ pression plate for the upper arch.
  • the impression plate 10 for the upper dental arch compri- ses the bowl 11, in s single piece formed by bending a metal sheet, and a handle 30.
  • the bowl 11 consists of a flat horseshoe-shaped bottom 12 and of rear and side walls 13 and 14 formed by the bends
  • the lateral walls are radiused 18 following an arc of a circle.
  • This raised part 20 On the bottom 12 is an axial raised part 20 bent at the sides and back 21. This raised part carries cylindrical ear-shaped projections placed axially, formed by cross cuts 26, 26 and by shaping the metal .
  • the impression plate 40 for the lower jaw, comprises a bowl 41 in a single piece made by shaping a sheet of metal, and a handle 70.
  • Shape of the bottom 42 of the bowl is that of a horseshoe, the outer rear and lateral walls 43,44 being formed by bends 45 at 90° in the metal sheet.
  • the lateral walls have a curved rim sloping down at the front practically to the floor of the bowl.
  • the horseshoe bowl On its inner side 50 the horseshoe bowl has a rear wall 51 and lateral walls 52 slightly inclined inwards at bends 46 of about 45° of the arc of a circle.
  • these walls On their forward sides these walls have a rim 53 formed by a curve 54 that follows the arc of a circle.
  • the outer rear and lateral walls 43,44 have a rim 48 turned in towards the inside of the bowl by bends 49.
  • the inner walls 51, 52 have a rim 53 turned in towards the inside of the bowl by a bend 54.
  • Figs. 9 and 10 illustrate a box 90 of plastic film com- prising a container section 91 and a transparent lid 92.
  • the container section is parallelepiped and suitable for holding an impression plate for either the upper or lower dental arches 10, 40, as well as an impression 93 for the lower arch .
  • the lid 92 also has an outward projecting edge 100 of a size to fit onto the edge 98 of the container section 99, as well as an upright edge 101 orthogonal to the edge 100. This ensures that the lid will remain securely closed on the container section and can be sealed with adhesive tape if required.
  • this is a useful box 90 able to hold the lower impression plate 40 complete with its impres- sion 93.
  • the container section 90 holds the impression plate 10 for the upper dental arch.

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 Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Preparations (AREA)
  • Table Equipment (AREA)

Abstract

Process for shaping impression plates (10) for dental purposes formed, in all its parts, namely the base (12), walls (13, 14), rims (16, 28) facing inwards, protuberances (20, 23, 24), cavities (25, 26), inscriptions (80) and the like by means of radiused bends (15, 17, 21, 29) and of a single metal sheet without welds and without crevices to which access is difficult, made of a stainless and biocompatible titanium alloy, offering maximum resistance and, being easy to sterilize and disinfect, preventing proliferation of pathogenous micro-organism.

Description

IMPRESSION PLATES FOR DENTAL USE AND MODE OF CONSTRUC¬ TION
The invention concerns impression plates for dental use and the process followed in making them. The ordinary impression plates used by dentists are generally known.
In nearly all cases where application of caps to teeth, provision of dentures and the like are concerned, impres¬ sions of the dental arch are needed to ensure that the resulting prosthesis will fit properly according to the dimensions and characteristics of each patient's teeth. As these characteristics differ greatly, varying with a patient's age, sex, shape of dental arch and teeth, in each case caps, prostheses or fixing means have to be specially constructed.
Dentists therefore use impression plates of different shapes and sizes to suit the dental arches of their pa¬ tients and having first filled such a plate with a fluid material which gradually hardens, it is then placed on the patient's upper or lower dental arch as required. As soon as an impression of the teeth has been taken the plate is removed from the patient's mouth and later sent to the dental laboratory which makes the prosthesis. An impression plate used for one patient must of course be properly sterilized before being used for another. This is extremely important in view of information recently acquired about diseases, including the serious risk of AIDS and because the most frequent vehicle of infection is the blood which almost inevitably seeps out during dental work. Because of their substantially complex and varied struc¬ tures, these impression plates are made of a number of pieces welded together. By their very nature such welds create protuberances, rough edge and a general lack of smoothness, but apart from an uneven surface there are also small recesses crea¬ ted by added parts all of which make it difficult to ob¬ tain complete sterilization. This undoubtedly leads to health problems not only for patients but also for dentistry workers. Further problems arise from environmental aggression, namely that of the mouth in which the impression plates are placed. These plates are easily corroded and otherwise damaged, partly because their bulk must be reduced as much as pos¬ sible so as to enter the mouth without difficulty in view of its delicacy, but especially considering the space be¬ tween the teeth and the inside of the mouth. Problems therefore exist either because the plates are too thick or else too thin for satisfactory structural resistance to mechanical stresses, often very high on account of the muscular strength of the jaws. If this is the cause of warped plates, difficulties will arise when accuracy is needed in making the pros- theses . The above invention avoids or greatly lessens these drawbacks as will be explained here below.
Subject of the invention is a process for making impres¬ sion plates for dental purposes. All parts - base, walls inwardly-turned rims, protuber- ances, cavities, inscriptions and the like - are made by bending and shaping a sheet of material without welds, added pieces, sharp corners, fissures or hidden crevices. The impression plates so made therefore consist of a single piece. The purpose of this is to avoid inaccessible recesses or cavities and so facilitate thorough cleansing, steriliza¬ tion and disinfection, to prevent development, and proli¬ feration, of pathogenous micro-organisms. All bends follow arcs of a circle. The material used is a titanium alloy which is biocompatibl stainless, acid-proof; it also offers high resistance to corrosion caused by pitting in environments containing halids as well as high mechanical strength. Composition of this titanium alloy is preferably Ni-Cr-Mo-C-T The quantity of carbon is preferably about 0.08% and that of titanium between 0.1 and 10%.
Minimum quantity of titanium is preferably 0.5%. Inscriptions are engraved by micro e rical electric dis¬ charge machining, this method being adopted to prevent formation of inaccessible recesses in the surface.
In the plate for the upper arch the axial semicy1indrico- -conical upper surface of the impression contains axial ear-shaped projections one in line with the other, also substantially conical and open at the front. These projections help to keep the impression in place while the open front ends make it easy to clean them tho¬ roughly .
Preferably there are two ear-shaped projections. At the bottom, right across the front, is a continuous rim bent in the arc of a circle at practically 90° in re- lation to the bottom surface.
An inclined rim on the rear and side walls projects inwards, this one also bent in the arc of a circle, and extends alonj the entire length between the arched area at the front of of the plate and a V-shaped axial area at the rear. The inner and outer walls of the impression plate for the lower horseshoe-shaped arch have, on their upper edge, an inward-facing rim formed of material bent in the arc of a circle. The handles are rectangular and are placed axially. Each plate is packed separately in a box-shaped structure large enough to receive the whole plate.
This box is of disposable plastic material and consists of a lower container and a lid. The lower container has a horizontal outward-facing edge and the lid a similar one in addition to an upright outer edge. The horizontal edges of both lower container and lid thus fit together, extra protection being assured by the surrounding vertical edge which encloses the horizontal edge . The invention offers evident advantages.
Cleaning and sterilizing of the impression plates is made easy by the absence of welded joins, added material, fissures, sharp edges on the inside and outside, impe¬ netrable crevices, and by the fact that a single sheet of material is used to make each impression plate, thus lessening the risk of infection and the spread of serious diseases through the blood.
The titanium alloy adopted ensures maximum resistance to corrosion and to mechanical stresses, maximum biocompati- bility while making thinner walls possible in various parts of the plate.
Plates can thus be lighter and less bulky without impair¬ ing resistance to mechanical and chemical stresses. Impressions in the plate are held in place by projections of suitable shapes and sizes without creating the undesi- rable recesses referred to above.
Packing each plate singly offers both maximum protection before use as well as protecting the impression it holds during transfer to the prostheses makers. Manufacturing costs are low because the moulding process used is rapid and maintains structural features intact.
Patients are treated with much safer and more comfortable plates than is possible with present ones.
Characteristics and purposes of the invention will be made still clearer by the following example of its execution illustrated by diagramma ically drawn figures.
Fig.1 Plan view of the impression plate for an upper arch.
Fig.2 Profile view of the same plate.
Fig.3 Longitudinal section of the same plate.
Fig. Back view of the plate partially cut away. Fig.5 Plan view of the impression plate for a lower arch. Fig.6 Profile view of the plate in Fig. 5. Fig. 7 Longitudinal section of the plate in Fig.5
Fig. 8 The above plate seen from the back, partially cut away .
Fig. 9 Perspective view of the container in which there is an impression plate and an impression for the lower arch .
Fig.10 Perspective view of the container holding an im¬ pression plate for the upper arch.
The impression plate 10 for the upper dental arch compri- ses the bowl 11, in s single piece formed by bending a metal sheet, and a handle 30.
The bowl 11 consists of a flat horseshoe-shaped bottom 12 and of rear and side walls 13 and 14 formed by the bends
15 at 90° and having a front rim 16 also formed by a bend 17 at 90° .
At the front the lateral walls are radiused 18 following an arc of a circle.
On the bottom 12 is an axial raised part 20 bent at the sides and back 21. This raised part carries cylindrical ear-shaped projections placed axially, formed by cross cuts 26, 26 and by shaping the metal .
At the back of the rear wall 13 is a V-shaped cut 27.
In the area between the front radiuses 18 and the V-cut at the back 27, the rear and lateral walls 13, 14 have a rim
28 facing into the bowl and formed by bends 29.
All bends 15, 17, 21, 29 are radiused.
In the rectangular handle 30 there is a hole 31.
The impression plate 40, for the lower jaw, comprises a bowl 41 in a single piece made by shaping a sheet of metal, and a handle 70.
Shape of the bottom 42 of the bowl is that of a horseshoe, the outer rear and lateral walls 43,44 being formed by bends 45 at 90° in the metal sheet.
The lateral walls have a curved rim sloping down at the front practically to the floor of the bowl. On its inner side 50 the horseshoe bowl has a rear wall 51 and lateral walls 52 slightly inclined inwards at bends 46 of about 45° of the arc of a circle. On their forward sides these walls have a rim 53 formed by a curve 54 that follows the arc of a circle. In the rear wall 43 there is a V-shaped cut 47.
The outer rear and lateral walls 43,44 have a rim 48 turned in towards the inside of the bowl by bends 49. Similarly the inner walls 51, 52 have a rim 53 turned in towards the inside of the bowl by a bend 54. In the rectangular handle 70 there is a hole 71.
The ends of the horseshoe body 42 are finished by a rim 65 shaped by a bend 66 at practically 45° and radiused. All bends 45, 46, 49, 54, 66 are radiused following an arc of a ciecle. In the rectangular handles 30,70 there are holes 31, 71. Inscriptions 80, indicated by A B C D, are engraved on said handles by micrometrical electric discharge machin¬ ing to avoid creating crevices that might harbour germs. Figs. 9 and 10 illustrate a box 90 of plastic film com- prising a container section 91 and a transparent lid 92. The container section is parallelepiped and suitable for holding an impression plate for either the upper or lower dental arches 10, 40, as well as an impression 93 for the lower arch . Angles 97 between the base 95 and sides 96 are bevelled and the upper edge 98 projects outward. The lid 92 also has an outward projecting edge 100 of a size to fit onto the edge 98 of the container section 99, as well as an upright edge 101 orthogonal to the edge 100. This ensures that the lid will remain securely closed on the container section and can be sealed with adhesive tape if required.
As seen in Fig. 9, this is a useful box 90 able to hold the lower impression plate 40 complete with its impres- sion 93.
In Fig. 10 the container section 90 holds the impression plate 10 for the upper dental arch.

Claims

CLA IM S
1. Process for making impression plates ( 10,40) for dental use characterized in that all its parts: bottom ( 12,42 ) ,wal1s ( 13, 14,43,44,51,52), rims ( 16,28,48,53,65) bent inwards, protuberances (20,23,24), cavities (25,26), inscriptions (80) and the like, are made by means of bends ( 15, 17,21, 29,45,46,49,54,66) and by shaping a sheet of material without welds, without added pieces, sharp corners, cre- vices or hidden openings in order to avoid creation of recesses that are difficult to reach, and so make possi¬ ble easy and thorough cleaning, sterilization and disin¬ fection, avoiding the presence, and proliferation, of pathogenous micro-organisms.
2. Process as in claim 1, characterized in that the impression plates ( 10,40) con¬ sist of one single piece.
3. Process as in claim 1, charac erized in that the sheet of material is metal.
4. Process as in claim 1, characterized in that bends ( 15, 17,21,29,45,46,49,54,66) are made following arcs of a circle.
5. Process as in claim 1, characterized in that a titanium alloy is used.
6. Process as in claim 5, characterized in that the titanium alloy is -biocompatible, stainless, fully resistant to acids, offers high resistance to intergranular corrosion caused by pitting in halid en¬ vironments, and to mechanical stresses.
7. Process as in claim 5, characterized in that composition ot the titanium alloy is Ni-Cr-Mo-C-T.
8. Process as in claim 5, characterized in that the titanium alloy includes about 0.08% of carbon.
9. Process as in claim 5, charac erized in that the titanium alloy contains between 0.1 and 10% of titanium.
10. Process as in claim 5, characterized in that the titanium alloy contains about 0.5% of t itanium.
11. Impression plate ( 10, 40) for dental purposes, charac erized in that all its parts, namely the bottom ( 12,42), walls ( 13, 14,43,44,51,52), rims ( 16,28,48,53, 65) bent inwards, protuberances (20, 23,24) cavities (25, 26), inscriptions (80) and the like, are formed by bends ( 15, 17,21,29,45,46,49,54,66) and by shaping a sheet of material without welds, without added pieces, sharp cor¬ ners, crevices, hidden openings, in order to avoid the formation of recessess to which access is difficult, and so to ensure easy and thorough cleaning, sterilization and disinfection preventing the presence and spread of patho¬ genous micro-organisms.
12. Impression plate ( 10) for dental use as in claim 11, characterzied in that it presents inscriptions (80) en¬ graved by micrometrical electric discharge machining.
13. Impression plate ( 10) as in claim 11, characterized in that at the base ( 12) of the impression plate ( 10) for the upper dental arch, there is an axial semicy1indrico-conical raised part (20) in which are ax¬ ially aligned ear-shaped projections (23,24), these too being substantially conical, their front bases (25,2 6) being open so as to hold the impression more securely but their bases (25,26) being open, easy and thorough clean¬ ing is ensured.
14. Impression plate ( 10) as in claim 13, characterized in that there are two ear-shaped projections (23,24).
15. Impression plate ( 10) as in claim 13, characterized in that the base ( 12) has a continuous rim
( 16) across the whole width of the front, bent in an arc of a circle at about 90° in relation to said base ( 12).
16. Impression plate ( 10) as in claim 13, characterized in that the lateral ( 14) and rear ( 13) walls have an inclined edge (28) that projects inward, formed by a bend (29) in the arc of a circle, extending along the whole length between the arched areas ( 18) that originate at the front of the plate and an axial V-shaped rear zone (27).
17. Impression plate ( 10,40) as in claim 11, characterized in that the horseshoe-shaped impression plate (40) for the lower jaw, has on the top of its inner (51,52) and outer (43,44) lateral and rear walls, an inwardly in¬ clined edge (48,53,65) formed by bends ( 5,46,49,54,66) in the arc of a circle.
18. Impression plate ( 10,40) as in claim 11, characterized in that the axial handles (30,70) are rectan- guler .
19. Impression plates ( 10,40) as in claim 11, characterized in that they are packed in individual boxes (90) sufficiently large to take an impression plate ( 10,40) complete with impression (93), said boxes (90) being of dispo- sable plastic material and consisting of a container sec¬ tion (91 ) and a lid (92) .
20. Impression plates ( 10,40) as in claim 19, characterized in that the container section (91) of the box (90) has an outwardly-projecting horizontal edge (98) while the lid (92) has a horizontal projec ing edge ( 100) corresponding to that of the container section (91) as well as as an external vertical edge ( 101) so that the horizontal edges (98, 100) of the container section (91) and of the lid (92) fit together and are enclosed by a surrounding projection formed by the vertical edge ( 101) of the lid (92) that covers the join between container section (91) and lid (92).
21. Impression plate ( 10,40) as in claim 19, characterized in that the boxes (90) are parallelepiped in shape .
PCT/IT1994/000017 1994-01-24 1994-02-23 Impression plates for dental use and mode of construction WO1995019741A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62903/94A AU6290394A (en) 1994-01-24 1994-02-23 Impression plates for dental use and mode of construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI94A000103 1994-01-24
ITMI940103A IT1269460B (en) 1994-01-24 1994-01-24 IMPRESSION-SPOON FOR DENTAL USE AND CONSTRUCTION PROCEDURE

Publications (1)

Publication Number Publication Date
WO1995019741A1 true WO1995019741A1 (en) 1995-07-27

Family

ID=11367608

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1994/000017 WO1995019741A1 (en) 1994-01-24 1994-02-23 Impression plates for dental use and mode of construction

Country Status (3)

Country Link
AU (1) AU6290394A (en)
IT (1) IT1269460B (en)
WO (1) WO1995019741A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001076502A1 (en) * 2000-04-07 2001-10-18 Gualtiero Cozzi Dental impression-making device and method of manufacture thereof
US6896515B2 (en) 2000-04-07 2005-05-24 Gualtiero Cozzi Method for the manufacture of an impression-making device for dental use and impression-making device thus obtained

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1503580A (en) * 1924-04-25 1924-08-05 Albert M Epstein Dental tray
US1509376A (en) * 1920-06-16 1924-09-23 Frank C Rodgers Dental impression tray
GB513759A (en) * 1938-06-03 1939-10-20 Howard Hasting Montgomery Improvements in or relating to dental impression trays
FR2374889A1 (en) * 1976-12-27 1978-07-21 Tureau Kenneth DENTAL IMPRESSION HOLDER AND ITS SHAPING PROCESS
GB2196260A (en) * 1986-10-17 1988-04-27 G C Dental Ind Corp Material packs for preparing plate dentures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1509376A (en) * 1920-06-16 1924-09-23 Frank C Rodgers Dental impression tray
US1503580A (en) * 1924-04-25 1924-08-05 Albert M Epstein Dental tray
GB513759A (en) * 1938-06-03 1939-10-20 Howard Hasting Montgomery Improvements in or relating to dental impression trays
FR2374889A1 (en) * 1976-12-27 1978-07-21 Tureau Kenneth DENTAL IMPRESSION HOLDER AND ITS SHAPING PROCESS
GB2196260A (en) * 1986-10-17 1988-04-27 G C Dental Ind Corp Material packs for preparing plate dentures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001076502A1 (en) * 2000-04-07 2001-10-18 Gualtiero Cozzi Dental impression-making device and method of manufacture thereof
AU2001252539B2 (en) * 2000-04-07 2005-02-17 Gualtiero Cozzi Dental impression-making device and method of manufacture thereof
US6896515B2 (en) 2000-04-07 2005-05-24 Gualtiero Cozzi Method for the manufacture of an impression-making device for dental use and impression-making device thus obtained

Also Published As

Publication number Publication date
IT1269460B (en) 1997-04-01
ITMI940103A1 (en) 1995-07-24
ITMI940103A0 (en) 1994-01-24
AU6290394A (en) 1995-08-08

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