Further it is a type of combination set(s) arched artificial teeth units specially suitable for setting up productively teeth with ease and almost instantly in a non-interfering bi-lateral and protrusive balance articulation for a custom denture
For such activity of setting-up teeth of a denture with a conventional complete set(s) of separate individual denture teeth or units thereof, these teeth are often used from a dental supply stock. During practising of said specialized articulation, this is not always satisfactory, as it is recognized that in this instance the setting up is neither productive nor accurate by using the regular available sets of denture teeth or units.
The difficulty arises by setting up the separate denture teeth one by one in individual balance. In this instance there is a risk involved of loss of the position of these teeth due to the use of a bulk of dental wax heated and melted to attach the set-up denture teeth on a base, substantially either of dental wax or plastic conformed to it's respective endentulous jaw model, upper or lower.
During the hardening stage of the wax from hot to cold shrinkage occurs which leads to loss of occlusal balance form during the setting up of the teeth guided with a occlusal balance plate used for such balance setting-up.
Also a movement of the denture teeth relative to each other occurs during check-up of the balance by executing protrusive and bi-lateral excursions with the use of a balance dental articulator used for such set-ups, consequently the balanced articulation is distorted.
To readapt the articulation in balance fit again, by prying in the bulk of wax as in regular use, the same problem repeats as heretofore described. Or to readapt, by the regular technique of over excessive spot grinding, as known, using dental articulating paper and handpiece power tool either in the laboratory or in the mouth, is causing damage to the functional predesignated balance design form of the denture teeth.
For instance, denture teeth according to the doctrine of Beresin-Beresin and the free centric and eccentric Centrimatic denture teeth and other types of denture teeth are characterizing a predesignated balanced design form, and would be damaged.
Previous attempts to provide sets of preformed fully or partly arched denture teeth units to produce a specialized, balanced articulation for custom denture work have had some disadvantages, and were not intended and able to resolve the outstanding problems of the background of present invention.
As the description goes on the difference of idea between the cited attempts and the present invention will be distinctly indicated during the further description of the present invention.
The general objective is based to avoid the difficulties arising in the background when setting up denture teeth in order to attain a productive and accurate result for a almost instantly full balanced non-interfering articulation for customized denture work.
A primary objective is to provide a preformed combination set(s) of full balanced artificial teeth, united in arched units without denture base, and at least in one normalized size that can be modified in other sizes, or in a variety of three suitable sizes to comply with the different human jaw relations.
A second objective is to provide a preformed combination set(s) artificial teeth units to enable a single skilled trained dental technician, thereby with the only assistance of an apprentice dental technician, to control simultaneously at all times and to produce the non-interfering full balanced articulation for custom denture work. As well as to enable the technician to execute the specialized dental balanced articulation without to be involved in the expenditure for high skilled team work of several high qualified dental technicians.
With the objectives in view, the difficulties of the background as defined are solved by the present invention. Hereto the invention provides a suitable normalized consistent balance design form and construction thereof for a preformed combination set complete arched artificial teeth units. Having the set at least in one normalized size or sizes, of pre-formed full balanced artificial teeth units united in complete arched units without denture base.
Having the set(s) composed substantially of a complete arched upper artificial teethunit including anterior and cuspless sphero-ellipsoidal styled posterior artificial teeth preformed in a bi-lateral and protrusive total unitary occlusal bite plane. Separately a complementary complete arched lower artificial teeth unit including anterior and cuspless sphero-ellipsoidal styled posterior artificial teeth preformed in a total unitary occlusal bite plane conformed in a full balance form-fit with the bite plane of the upper artificial teeth unit. Having the occlusal bite plane of the artificial teeth units respectively as total functional.
Thereby each unit is substantially of a normalized arch form size and restricted occluso-gingival height predetermined either in a fully complete extended (A) or under-extended (B) complete arch-form size, in which the second last molars are excluded from each unit. Further each unit is predetermined with the total unitary center-occlusal bite plane normalized in a maintained non-interfering sphero-ellipsoidal balance design form having the posterior artificial teeth cuspless sphero-ellipsoidal including a self centering centric occlusal and bi-lateral free balance eccentric articular contact, and each of the contacts being either full (5) or in part (6). Further having the total unitary inter-occlusal bite plane sphero-ellipsoidal defined to be articular set non-bendable according to a sphero-ellipsoidal, oblique planar leveled occlusal plane. Further the combination set (A,B), is substantial non-bendable formstable tooth-aesthetical colorfast impact resistant (stress relieving) and durable abrasion-proof.
With the objectives in view and with reference to the accompanying drawings one preferred embodiment will now be described.
In an initial aspect of the present invention, there is provided a functional balance design-form for a preformed combination set of complete arched artificial teeth units, upper and lower without denture base. Thereby having the set substantially at least in a medium size and restricted occluso-gingival height or in a variety of sizes related to the human jaw complex relation.
With the objectives in view and use of the set(s), the invention aims, to render a capability for an almost instant, at least non-bendable adjustable and accurate setting-up of the artificial teeth units in a non-interfering, consistent full balance articulation during complete and partial bi-lateral upper and lower free-end custom denture work. By the phrase ‘full balance articulation’ what is meant: total individual maintained consistent balance during a bilateral movement and a combined protrusive movement of the lower jaw, during the custom denture work and oral use.
As disclosed in
As one example, the upper artificial teeth unit (1) includes united anterior artificial teeth and united cuspless sphero-ellipsoidal posterior artificial teeth preformed in a centric occlusal relation and in a bi-lateral and protrusive balanced unitary occlusal bite plane (3). Thereby the lower artificial teeth unit (2) includes united anterior artificial teeth and united cuspless sphero-ellipsoidal posterior artificial teeth preformed in a total unitary occlusal bite plane (4) conformed in a centric and balance form-fit in accordance with the occlusal bite plane (3) of the upper artificial teeth unit.
As disclosed in
In a case the inter-occlusal bite plane of the posterior artificial teeth is in a design-form ‘edge-to-surface’, as a partly inter-occlusal contact,
The broader design form of the inter-occlusal bite plane (3), (4) of the molars (13),(13) and (14),(14) is another element of present invention to ascertain the consistent maintained stability of the bi-lateral balance articulation during the eccentric articular total inter-occlusal balance bite contact, as specified heretofore in the description, when executed on a human jaw complex characterizing a flailing or extra larger temporo-mandibular joint structure, and articular function thereof.
As disclosed further in
Further it is recognised in dental practice, that the posterior region of the alveolar ridge of the human jaw complex is characterized with a course either in a regular or in an irregular level. Having this level included of anatomical land marks, such as steep inclines located either anterior to the left and right retromolar pad of the lower jaw, or anterior to the left and right tuberosity pad of the upper jaw.
These landmarks as described are impeding the setting-up of the units (1)(2), firstly in order to establish the inter-occlusal bite plane (3)(4) in centric occlusion; secondly to execute almost instantly the full balanced articulation, as pursued, with the provision and use of the units (1), (2), as predetermined in the initial aspect of present invention, characterizing an occluso-gingival height of 12 mm. and extra molar width as specified heretofore.
In these instances in order to achieve easily the specific full instant balanced articulation of present invention, the arch form of the combination set(s) is predetermined either in a complete extended tooth arch size as disclosed in
The specific full balanced articulation, as aimed, predetermined and defined initially in the invention, is achieved with the use of the artificial teeth units (1), (2), pre-designed with the occlusal-gingival height about 12 mm. and preferably with the extra molar width without tongue interference as defined heretofore, and with the difference of tooth arch form extension A, B,
Note: The applicant is aware that prior art attempts have been made either to use full arched denture teeth units, such as related to the invention U.S. Pat. No. 2,768,440 or to use sectional units (posterior and anterior) related to the invention U.S. Pat. No. 4,437,0421, and all, in order to set up denture teeth in a regular centric occlusion. However these attempts were without consideration for a full instant non-interfering consistent balanced articulation for custom denture work. Thereby these attempts were practising a technique of bending the units in place, either by heat or by moving denture teeth, mounted on a flexible plastic strip or wire, in a desired position relative to each other with the purpose to conform the denture teeth units in articulation on a plaster jaw model complex. This technique as heretofore, was not possible in most individual cases to establish an instant maintained full balanced planar (evenly leveled) sphero-ellipsoidal oblique articulation. While the regular conventional technique, including modifying the shape of the units by over excessive grinding, was causing to make the units weak, and loss of the essential design form.
In these instances it was not previously recognised that attributes of the kind of arch design form of present invention made it particularly useful for other dental techniques such as to create an instant and minimum adjustable non-interfering maintained full balanced articulation with the use of preformed full arched artificial teeth units (1), (2) and executed with an appropriate setting-up procedure.
Also to comply further the setting-up of the combination set(s) (1),(2) A,B individually in the full balanced articulation, as disclosed in the foregoing description, in this instance at least the set might be provided as a standard set in one suitable tooth arch size, such as a medium size, that conforms the most commonly appearing medium arch size of the alveolar ridge of the individual endentulous human jaw complex upper and lower to be restored. Thereby having the standard set(s) further at least in an ovoid arch configuration, in a desired age tooth colour e.g. such as a greyish-yellow shade, and in a tapered shape for the anterior artificial teeth arranged in a natural appearance conforming to the most appearing anterior tooth arrangement in human dentition.
As an exemplification: during the setting-up of the preformed standard medium size combination set(s) artificial teeth as defined heretofore, this set(s) might be altered in a smaller, or larger size, which might be the case. Having the units which are in use, further separated in three sections, including a section of the united anterior teeth, and a left and right section of the united posterior artificial teeth, thereby to be set up in accordance with an appropriate setting up procedure.
Further for instance, in a case where the standard set is transformed in a smaller size:—
It might be further contemplated to provide the combination set(s) (1) (2), A,B,
(i) at the one hand, having the variety combination sets of standard tooth arch sizes as an alternative provision readily to use any suitable desired size set units (1), (2) that enables to set readily the units instantly and adjustable in the full balanced articulation instead of previous technique using the standard combination set predetermined in one medium tooth arch size;
(ii)—at the other hand, having the variety combination sets of standard tooth arch sizes as an alternative provision to comply the setting-ups of artificial teeth units (1), (2) individually in full balanced articulation adaptable to the situation of a variety of jaw sizes and bite relations occurring in nature and classified according to 3 different classes of jaw relations I, II, III;
In that concern of the foregoing provision of the variety combination sets complete arched artificial teeth units, while the setting-up techniques of the cited prior art inventions of arched tooth units are using their denture teeth units in a variety of standard sizes only with the idea to conform the setting-up more or less readily with the different sizes of jaw existing in nature, such as small, medium and large.
In this instance it was not recognized that attributes of the kind of the provision, as the present disclosed variety tooth arch sizes, for the combination sets artificial teeth units, made it particularly useful for other dental techniques, such as to create an instant, accurate and adjustable non-interfering consistent maintained full balance articulation with the use of the sets in the variety of sizes and without bending. Thereby having the set(s) preformed in a balanced articulation to accommodate the situation of jaw relations in nature classified according to classes of different jaw relations I, II, III.
As heretofore disclosed in the total description, the combination complete set(s),
Referring to
Besides each tooth arch form size is at least in an oval configuration, in one color most common in nature related to a desired human age, e.g. such as greyish-yellow. Further preformed with posterior and anterior styled artificial teeth in one arch form piece. Having the anterior artificial teeth characterized with an outer tooth anatomy at least in one natural tapered form, preferably trapezoid, which may be adjusted into an oval or square, or triangle, or combined form.
Thereof, either of the ceramic tooth materials include the capability to be formed with a predetermined mechanical retentive shape as a durable joining aid to be applied to denture base materials of various plastics during custom denture work.
In the case of using the light curable ceramic-composite material 18, combined with said self-curable ethyl-methacrylate 19 and formed partly as the unitary ridge lap base of the combination set(s) denture teeth, as disclosed in
It will be appreciated to note that the combination set(s)
While the invention has been illustrated in present description and drawing, the same is to be considered as illustrative and not restricted in character.
Thereby it being understood that only the preferred embodiment has been shown and described and that all changes, further drawings and modifications that come within the meaning of the intended invention may be desired to be included for protection.
The present invention relates generally to the U.S. patent application Ser. No. 10/321,541, filing date Dec. 18, 2002, and is a continuation in part of it. More particularly it is related to an election of one of the inventions I, II, III involved in the initial U.S. patent application Ser. No. 10/321,541, and which has been classified as Invention I drawn to a combination sets complete arched artificial teeth units claimed by Claims 1-8 and 31.
Number | Date | Country | |
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60760695 | Jan 2006 | US |
Number | Date | Country | |
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Parent | 10321541 | Dec 2002 | US |
Child | 11511063 | Aug 2006 | US |