Patent Application
20220183793
The present invention relates to a method of producing an orthodontic transpalatal arch having multiproperties and more particular to prepare the transpalatal arch which is easy to prepare without the need of laboratory, cast, and impression.
The transpalatal arch TPA is used in fixed orthodontic treatment and is essential in anchorage reinforcement particularly in the cases of critical anchorage like in bimaxillary proclination or in canine impaction. In such cases of fixed orthodontic treatment, there is a need of the anchorage reinforcement. One of the anchorage reinforcement methods is the use of the TPA.
The conventional way for the preparation of the transpalatal arch is a complicated process which includes the steps as: (a) placement of an elastic separator (by the help of an elastic separator pliers), mesial and distal to tooth and an orthodontic band is put on it, usually on the upper first permanent molar in right and left side, (b) elastic separator is removed after 24 hours of placement and the proper size of the bands are inserted in right and left molars, (c) then an alginate impression for upper jaw was taken, just after placement of the band, (d) after the bands are transferred from patient mouth to the alginate impression, and (e) the impression gets ready for pouring with stone in order to get dental cast with the bands. At this stage the lab work is required for the fabrication of the TPA by wire bending of hard stainless steel wire gauge 1 mm and soldering procedure, finishing, polishing and delivering to orthodontist for placement in the patient mouth.
This conventional method is a lengthy process, requires laboratory and is costly. Moreover, it requires impression, cast and materials for cementation like glass ionomer cement. Further, the bands in general have several harmful effects on the teeth and/or the patient including pain, caries and periodontal problems(1-4).
Thus, there is a need for an improved method to prepare the transpalatal arch which is easy to prepare without the need of laboratory, cast, and impression.
The prime objective of the present invention is to provide a method of producing an orthodontic transpalatal arch having multiproperties.
Another objective of the present invention is to provide a method to prepare the transpalatal arch which is easy to prepare without the need of laboratory, cast, and impression.
Another objective of the present invention is to provide a TPA without bands.
Yet another objective of the present invention is to provide a TPA which can be removed anytime without interfere with arch wire in the fixed appliance.
Yet another objective of the present invention is to provide a method which saves time and effort.
Yet another objective of the present invention is to provide a method to prepare the TPA which can be used by an orthodontist by his own.
Yet another objective of the present invention is to provide the TPA which is comfortable for the patients during use.
Yet another objective of the present invention is to provide the TPA which is aesthetic for the patient.
These and other objectives of the present invention will be apparent from the drawings and descriptions herein. Every objective of the invention is attained by at least one embodiment of the present invention.
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. The present invention will be described in more detail hereinafter with the aid of the description which relates to preferred embodiments of the invention explained with reference to the accompanying schematic drawings, in which:
The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.
As used herein, the singular forms “a”, “an” and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.
In reference of
In a preferable example, the size of the sterile electrical wire (01) is 2*1.5 (semeins Co, Germany) and length of the wire is about 12 cm as shown in
The properties of the TPA in the present invention depend on the properties of the resin which is injected inside the tube, so the material engineering plays a role in determination of the properties of the TPA. For example one of the suitable materials is fibre reinforced composite to provide more rigid TPA. Additionally, hard stain less steel and/or orthodontic braided wire of steel—twistflex (02) gauge preferably of 0.032 inch may be added inside the tube to increase the rigidity. In other case, addition of plasticizer to fiber reinforced resin is used for maxillary expansion to provide flexible TPA. In other case normal light cure of resin is done or duel cure resin cement arranged inside the tube in addition to one or two of braided wire of steel—twistflex (02).
Now, the resin material or other material is set inside the plastic tube (04) through a light cure device (08), usually the resin is light or duel cure.
TPA inside the patient mouth is fixed by the help of acid etch technique.
This saves time and effort. Further, it solves the problem which occurs through the conventional TPA with bands such as periodontal problem and bacteremia, patient discomfort, white spot lesions that might develop underneath the bands and residual space after band removal.
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. It is therefore contemplated that such modifications can be made without departing from the spirit or scope of the present invention as defined.
