Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/80—Dental aids fixed to teeth during treatment, e.g. tooth clamps
  • A61C5/85—Filling bands, e.g. matrix bands; Manipulating tools therefor

Definitions

• Matrix for the dental medicine and a device for the production of matrix bands are known in the art.
• the invention relates to a matrix, which is preferably designed in the form of a band, for dental medicine and a device for producing matrix bands.
• the tasks of the known, differently shaped matrices in conservative dentistry are as follows.
• the matrices have the task of lost walls due to tooth decay (caries), ab-asion and cavity preparation (elimination of caries) during the introduction of the filling in the manner of a formwork to complement in construction.
• the matrix as the "mother form", has to restore the lost wall of the tooth - mostly with cavities in class II - to enable the filling material to be introduced and to secure the marginal seal cervically, ie in the area of the tooth neck.
• the later filling is then to a certain extent the "Pat ⁇ ' ze".
• a die of the type mentioned at the beginning which has at least one translucent area.
• a window matrix designed in this way permits the optimization of the marginal adaptation of proximal * marginal areas of light-cured MO, OD and MOD comositositorations.
• This so-called "hardening technique" through the window enables the polymer shrinkage to be controlled: by means of the laterally reflecting light sources, m can be critically and gingivally critical with regard to secondary caries (relapsing caries), gingivitis (inflammation of the gums) and periodontitis (inflammation of the tooth structure). Approximal area optimize the edge ratio thanks to the reversal of the shrinkage vectors.
• This window matrix technology not only eliminates the negative properties of the polymerisation-related volume shrinkage typical of composites, but also prevents the fine excesses by tearing the matrix tape, which can be tensioned very tightly without tearing.
• the window matrix also enables excess cementing of a wide variety of adhesive restorations, such as: Brillinat, Ceram, Cerec, Dicor, Eos, Isosit, Mirage, Tuce ram-In l ays.
• the device for producing multilayer matrix bands being particularly advantageous, at least one matrix band layer for holding the matrix on the tooth and at least one matrix band layer being translucent ldet is.
• FIG. 1 is a top view of a die, such as that used for double lapproxi a fillings and relatively large mutual tooth spacing,
• FIG. 6 shows a side view of the teeth according to FIG. 5,
• FIG. 17 shows a diagrammatic representation of a tooth provided with a filling with the temporally following hardening areas
• Fig. 18 is an enlarged vertical section of a die made of a metal-coated sheet
• F g. 19 shows a schematic illustration of a device for producing tooth matrices.
• the die 1 shown in FIG. 1 has a central region 2 as a positioning part and two end regions 3 which are offset from the central region 2 in such a way that the central region 2 has a section from the upper edges of the two end regions 3 projecting level.
• the die 1 is provided with two punched-out windows 5; it is preferably constructed in two layers, the one supporting layer consisting of a thin steel strip, for example 0.05 mm thick, on which an equally thin, transparent plastic strip, preferably made of cellulose acetate, is attached.
• the two layers can be glued to one another, sealed hot or warm or otherwise connected; they form a unit when in use, the plastic strip resting against the tooth filling and the steel strip from this filling, as shown, for example, in FIG. 7.
• FIG. 2 and 3 show a top and side view of a group of teeth 7 consisting of three teeth, of which the central tooth has a cavity 8 which is to be filled with a hardening plastic while maintaining the original tooth shape.
• the extent of the tooth is reduced. For this reason, the matrix must be sen of the tooth to be treated and the contraction of the die at both ends 3 give a conical shape to closely embrace the wider tooth shape at the contact point.
• the wall edge to the cervical area is shorter than the edge to the edge of the filling, as can be seen in FIG. 3.
• the matrix 1 forms the anatomical shape of the tooth in the cervical area, i.e. in the area of the tooth neck, as closely as possible. It prevents overfilling in this area with filling material and protects the marginal paradont.
• the die 1 is equipped with the steel strip.
• FIGS. 4 to 6 show representations analogous to those of FIGS. 1 to 3, but for teeth lying close together and small-diameter tooth neck of the tooth to be treated.
• the matrix band should also only slightly protrude cervically from the approximal box in order to be compacted there. This wedging is shown in particular in FIG. 7 on an enlarged scale.
• D e. Fig. 4 shows a die 12 with a curvature 13 which is larger than that of the die 1 according to FIG. 1, so ie with two windows 5,5 'and an emphatically conical shoulder 15, which corresponds to the smaller circumference of the tooth neck .
• This die 12 is for use on a group of teeth
• a die 29 of the type described has an external steel band 30 with one or more windows 31 and a plastic band 32 which bears against the treated tooth 26. Between the tooth necks of the two teeth 25 and 26 is a light wedge
• FIG. 8 shows the top view of the teeth according to the arrangement according to FIG. 7, the two die ends 35 of the die placed around the tooth 26 to be treated by means of die clamps 36 by detecting the die ence
• the illumination of the luminous element 34 by an external light source allows the critical area of the meeting of plastic and tooth material to be cured first in the primary hardening area 37 and thus to prevent the dreaded shrinkage spaces between the plastic and tooth material.
• the overlying areas of the plastics material are then cured, such that the shrinkage of the curing is expressed only in the free areas of the plastic 'and basically the entire plastic mass crack-free and without Bi ldung of Zwi ⁇ rule evacuate with the tooth mass to be cured can.
• the K1 II matrix has en (for single approximal filling) or two windows (for double app rox i ma le fillings) made of cellulose acetate in the approximal area.
• the windows enable perfect light curing in the approximal area. The exposure to light is not restricted.
• the K1 II mattress tape is held in situ with the help of matrix tensioners such as the Toffe Imi system, UHM system or Nyström I and II system.
• Figs. 9,9a-9e and 10,10a to 10e show premolar Mat ⁇ 'zenb S, while Figures 12,12a to 12k molar Mat ri r zenb choruse show.. The bulges 40 are clearly visible.
• FIGS. 13 and 14 show the basic shape of two bellied matrix bands, while FIG. 15 discloses a single-bellied version.
• the window sizes of molar bands are approximately 5 x 10 mm, and the premolar bands have a window size of approximately 4 x 8 mm.
• FIG. 16 shows a cellulose acetate strip 42 as it is applied before punching out the die with the steel band after punching out the window.
• FIG. 17 shows a tooth 45 in a perspective representation with a filling 46 which is schematically strongly bordered and is marked with zones 48, 49 and 50.
• a Leuchtkei l 52 is acted upon by a light source 54 with light rays 55 which are deflected due to the Kei lkonstruction and harden the lowermost zone 48 when light falls.
• the two zones 49 and 50 are then cured, as can be seen schematically, the matrices shown in the various figures being the same Plastics fill 46 include accordingly, so that it can be subjected to curing in the correct shape.
• FIG. 19 schematically shows a device 60 for the production of matrix bands, which comprises a plastic band 61 and a metal band 62.
• the metal strip of the steel strip roll 62 is passed through a punching device 64, by means of which the corresponding number of windows is punched out.
• the plastic tape removed from the roll and the punched metal tape are laminated together in the connecting station 65 by heat, adhesive or the like, so that they form an inseparable unit.
• the two combined bands arrive in a die punch 67, by means of which the dies 68 are produced and ejected in a ready-to-use form.
• the metal strip gives the window matrices the required rigidity, which in turn is advantageous when the strip is laid and when the filling is shaped.
• the die 1 consists of a thin band-shaped blank made of steel or another suitable elastic material, it also being possible to use plastics which do not react with the tooth filling.
• this band-shaped, metallic blank one or more window-like openings 5 are formed, which are covered by a strip-shaped blank made of a translucent, in particular glass-clear plastic, wherein this plastic strip fen has a shape and dimensions corresponding to the steel strip of the die 1, so that the plastic strip is congruent with the steel strip.
• Translucent plastics are used to cover the windows 5, such as, for example, cellulose-based plastics, such as cellulose acetate, and also vinyl polymers, PS, PMMA and PC.
• the die provided with at least one window 5 consists of a blank designed according to the shape of the die, made of a translucent, glass-clear plastic, for example based on cellulose, such as cellulose acetate, or as a vinyl polymer, PS, PMMA and PC, whereby In particular, such plastics come into use as are used for optical purposes, with a certain elasticity being required in order to be able to place the mattress around a tooth.
• the die is provided from the plastic strip with a metallic coating, which can be vapor-deposited, for example, with the formation of window-like surfaces.
• Metallized plastics of this type are produced by non-galvanic or galvanic processes.
• the production can be carried out by the metal spraying process, in which low-melting metals are applied to the plastic as a mist, or by the metal reduction process, in which the metal salt solutions, for example Gold, silver or copper salt solutions can be reduced with the help of formaldehyde.
• the metal salt solutions for example Gold, silver or copper salt solutions can be reduced with the help of formaldehyde.
• the metals then deposit on the plastic.
• a metal coating is also possible using the vacuum evaporation process.
• plastics are used as plastics which do not form connections with the tooth fillings nor which are dissolved or dissolved by them.
• the die 1 can also consist of a glass metal, which is used in the form of a thin strip or film, from which the die 1 is produced with the formation of windows 5.
• the number of windows 5 formed in the die 1 can be chosen as desired, in addition to a window the die 1 can have two or more than two adjacent windows.
• a lattice-shaped design of the metallic part of the die is particularly advantageous, so that a plurality of windows 5 arranged side by side and one above the other is formed.
• the intrinsic stability of the die 1 is improved by this configuration while maintaining sufficient flexibility.
• the windows 5 have a square, rectangular, circular or another geometric shape.

Landscapes

• Health & Medical Sciences (AREA)
• Veterinary Medicine (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Dentistry (AREA)
• Public Health (AREA)
• Dental Prosthetics (AREA)
• Materials For Medical Uses (AREA)
• Dental Preparations (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Medicinal Preparation (AREA)

Priority Applications (5)

Applications Claiming Priority (4)

Publications (1)

Family

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Family Applications (1)

Country Status (13)

Cited By (1)

Families Citing this family (50)

Citations (3)

Family Cites Families (6)

• 1991
  • 1991-08-05 CA CA002088584A patent/CA2088584C/en not_active Expired - Fee Related
  • 1991-08-05 DE DE9191113137T patent/DE59100185D1/de not_active Expired - Fee Related
  • 1991-08-05 DK DK91113137.3T patent/DK0470552T3/da active
  • 1991-08-05 AU AU83066/91A patent/AU8306691A/en not_active Abandoned
  • 1991-08-05 JP JP3512998A patent/JP2908021B2/ja not_active Expired - Lifetime
  • 1991-08-05 ES ES91113137T patent/ES2044666T3/es not_active Expired - Lifetime
  • 1991-08-05 HU HU9300143A patent/HUT66039A/hu unknown
  • 1991-08-05 EP EP91113137A patent/EP0470552B1/de not_active Expired - Lifetime
  • 1991-08-05 US US07/971,756 patent/US5380198A/en not_active Expired - Fee Related
  • 1991-08-05 WO PCT/EP1991/001471 patent/WO1992002189A1/de active Application Filing
  • 1991-08-05 PL PL29421091A patent/PL294210A1/xx unknown
  • 1991-08-05 AT AT91113137T patent/ATE91399T1/de not_active IP Right Cessation
• 1993
  • 1993-02-03 NO NO930381A patent/NO930381D0/no unknown

Patent Citations (3)

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