Production of a tooth-colored, aesthetically pleasing, and functionally perfect dental brace

Abstract

The brace is characterized by the fact that, through the application of a heat-shrink tube colored in the exact tooth shade, it now blends virtually invisibly into its surroundings. Mechanical abrasion is eliminated.

Description

[0001] The classic model cast denture, or one-piece cast denture, is a partial denture manufactured using the model casting process. From an economic perspective, it is the second most economical but most common version of a denture, ensuring a fairly stable hold with the help of clasps as a holding element. Here, the metal components of the denture, such as the cast clasps, large and small connectors, and the denture base, are cast in one piece. The material used is an alloy of cobalt, chromium, and molybdenum, which is as biocompatible and corrosion-resistant as possible. This alloy, while offering sufficient hardness and strength, also enables a delicate and periodontally friendly design of the model cast.

[0002] The most cost-effective option would be an immediate replacement, also known as an interim replacement or immediate restoration. The two differ only in their names; only an interim restoration serves as a temporary solution, while an immediate replacement is considered permanent. In both cases, so-called hand-bent clasps are used on the tooth to be clasped.

[0003] The simple, unaesthetic, silver-colored, cast, or curved retaining element, manufactured in the patient's tooth color, especially in the anterior and posterior regions, presents the worst compromise, particularly and above all, with increasing mechanical wear when the denture is inserted and removed several times a day. However, given the current state of technology with regard to classic clasps, this must be accepted. With my invention, the tooth substance remains virtually untouched; in fact, the clasp tooth is even protected from mechanical wear during insertion and removal. The previous short- to medium-term crowning of the clasp tooth, due to mechanical wear, will no longer be necessary.

[0004] The invention specified in claim 1 is based on the problem that the clasps are clearly visible from an aesthetic point of view, especially in the front teeth area. There is a material called Pree plastic, whereby the entire base plus clasps can be manufactured from a light beige plastic. It should be noted, however, that the function and design in no way meet the demands or requirements of a cast clasp. The clasps have to be made quite oversized in order to achieve any kind of holding function. The supporting function, i.e. the clasp support, allows for a certain amount of unpleasant springing when the denture is subjected to greater chewing pressure. This eliminates the need to activate or deactivate the clasp. If the holding effect is lost, a new production of the expensive denture is unavoidable.The beige braces also immediately catch the eye if your own teeth are darker or lighter than the color of the braces. The most modern form of manufacturing, so-called CAD / CAM (the abbreviations stand for "Computer-Aided Design" and "Computer-Aided Manufacturing"), also known as zirconium ceramic, is not a satisfactory solution, as it cannot by any means eliminate all the disadvantages of braces. The limited aesthetic aspect, since an exact individual color matching of the patient is not possible, is unsatisfactory. On the contrary, this manufacturing method is far more prone to breakage. Another serious disadvantage here is... This eliminates the need to activate or deactivate the clasp. If the retention effect is lost, a new prosthesis must be made.

[0005] The underlying problem is solved by the feature listed in claim 1, which, when used with my invention, prevents the clasp arm from appearing oversized. In particular, the clasp arm for model cast dentures, interim dentures, and immediate dentures can be designed in the patient-specific tooth shade of the well-known, worldwide standardized Vita classical A1-D4 color guide. The clasp can be activated or deactivated as usual. It is worth emphasizing that, for the first time, my invention uncompromisingly fulfills all the requirements a clasp should have.

[0006] The invention defined in claim 2 is based on the problem that the clasps achieve their hold through the anatomical shape, depending on the severity of the undercut. When inserting the prosthesis, the elastic components of the cast clasps expand when crossing the prosthetic equator, only to then return to their original shape in the underlying undercuts. Similarly, when removing the prosthesis, a certain amount of force is required to release the clasp when crossing the prosthetic equator. This clasp retention force depends on the elastic modulus of the alloy, the clasp cross-section, the depth of the undercut, and the clasp length. Fig. 1 with reference lines 1 to 4)

[0007] In both cases, a noticeable scratching sensation can be felt and heard when the prosthetic equator is crossed. This represents one of the worst compromises possible: tolerating mechanical abrasion of healthy tooth substance because the current state of technology does not allow for anything else. The medium- to long-term, massive loss of tooth substance during the insertion and removal of the metal clasp denture is accepted, despite the underlying consequences of this, which would require the crowning of the clasp tooth.

[0008] The underlying problem is solved by the feature stated in claim 2. By placing a shrink tube (in matching tooth color) over the clasp arm, which is previously positioned at a uniform distance through the provided spacer ( Fig. 2 with the reference lines 4 to 5). ( Fig. 3 with reference lines 6 to 7) To ensure a secure fit, the tube is shrunk using a Bunsen burner, for example. The previously applied retention beads ( Fig. 4 with the reference line 9) provide additional mechanical support.

[0009] The underlying problem is solved by the features listed in claim 3, in that, if a prosthesis is present, the prosthesis wearer can now purchase a freely available home set. The home set consists of an organizer, sorting, and storage box with 20 compartments, each compartment measuring 4 cm x 4 cm, and a total of 20.8 cm x 16.9 cm x 4 cm.

[0010] The dividers can be inserted individually. The Vita classical color ring is equipped with 16 tooth colors. The corresponding shrink tubes are colored in the 16 colors using adhesive moistened on the inside, each in the exact tooth color. They have an inner diameter of 0.9 mm, a wall thickness of 0.3 mm and a length of 4 cm with a shrinkage factor of 2. In addition, 20 strips of 120-grit sandpaper with a length of 4 cm and a plastic / metal primer 2 ml bottle which is to be applied to the clamp arm in order to obtain sufficient mechanical hold for the shrink tube. Two compartments each are to be filled with modeling silicone, mass A and mass B. No technical skills are required for this. Reference lines 1 clamp support (KA) 2 staple tips (KS) 3 Prosthetic Equator (PE) 4 Undercut area (UB) 5 Preparation wax (VW) 6 Magnifying glass view (LA) 7 Clamp arm in the area of ​​the previously precisely defined placeholder (KA) 8 Heat shrink tubing (SCH) 9 retention beads (RP)

Claims

[1] the bracket is characterized by By attaching a shrink tube, dyed the exact color of your tooth, it now blends in virtually invisibly with its surroundings. Mechanical wear is no longer present. [2] the bracket is according to the preceding claim, (1) characterized by The use of shrink tubing allows for a smoother insertion. Acoustic scratching of the tooth substance, which leads to massive abrasion, is completely eliminated. The clasp tooth is even protected during insertion and removal, and subsequent crowning is no longer necessary due to the lack of abrasion of tooth substance. From now on, every requirement for a clasp is met without compromise. [3] the bracket is according to previous claims, (1 and 2) characterized byThat is, applying preparatory wax (0.2 mm thick) which, after determining the prosthetic equator, runs exactly congruent with the subsequent wax clasp profile on the investment model. This procedure allows me to determine the clasp path according to my discretion or the desired hold. From now on, not only the clasp tip, but the entire clasp arm can run in the undercut area without any concerns. [4] the bracket is according to previous claims, (1 to 3) characterized by Applying retention beads provides additional mechanical support, ensuring the shrink tubing stays securely in place even after weeks. [5] the bracket is according to the preceding claims, (1 to 4) characterized by, only through my invention, the insertion of a shrink tube, to protect the clasp tooth for the first time, in particular to present a previously short to medium-term, absolutely necessary crown as unnecessary. [6] the bracket is according to previous claims, (1 to 5) characterized bythat even if a clasp replacement is present, the clasp is carefully bent slightly in the shoulder area (a common method in dentistry to activate or deactivate the hold of the denture). In the next step, depending on how stable the shoulder area is, a circular end strip is preferably milled to define a clean transition from the clasp shoulder to the shrink tubing. If the statics are sufficient, additional retentions can be created using the separating disc. The use of shrink tubing, which is moistened on the inside with existing adhesive, should preferably be used to ensure additional hold. [7] the bracket is according to previous claims (1 to 6) characterized bythat a marble-sized silicone ball is pushed inside the clamp. After curing with a cutter knife, the clamp arm is reduced along its entire length from above to the size of the clamp. I can now see the exact fit at the transition from metal to silicone from above. The silicone is then removed and the clamp arm is bent open at the shoulder. Subsequently, the silicone is pushed back to show the extent of the bending. Repeat this process if necessary until the desired distance is achieved. The clamp arm is then moistened with the adhesive and the shrink tubing is shrunk on.

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