Patent Application
20200253697
The present invention relates to dental implant components and methods of implantation and related patient treatment.
The advent of dental implants as a means for addressing tooth loss and related complications represents a significant advance in the dental field's contributions to patient health, comfort and happiness.
Even a single missing tooth can, depending on its position, affect both a person's ability to comfortably chew, as well and their appearance. The latter can have a significant, and well-documented impact on (subjective) self-esteem, and even others (objective) reaction to a person, such as in professional, inter-personal contexts. Perhaps lesser known is that a missing tooth can promote bone loss in the jaw, leading to still further physical and mental health issues, not the least of which can arise from the apparent pre-mature aging of a person whose jaw line has receded because of such loss.
When more than a single tooth is missing, the magnitude of these issues can accumulate in a near exponential manner.
The traditional process of dental implant implantation involves (assuming a tooth is already missing, or has now been extracted) accessing the upper jaw bone (maxilla) or lower jaw bone (mandible) to create an “osteotomy”, or recipient site into which the implant will be inserted.
The implant is, by convention, a titanium body that is exteriorly threaded and is accordingly screwed into pre-formed osteotomy in the receiving bone (maxilla or mandible).
The proximal portion of the implant includes an interface with engagement means for securely engaging an abutment. The abutment is the intermediary body that attaches its lower end, to the already-implanted dental implant. A permanent crown is then attached to the abutment via screw or cement (visible, natural-looking portion of the artificial tooth comprised of the entire implant-abutment assembly).
The complete implant assembly typically is not assembled at-once, but rather involves several intervening phases. By convention this can include: a subsequent incision of the gum to expose the implant/abutment interface to facilitate placement of a “healing cap”, scan body, impression coping, temporary abutment and final abutment. —More specifically, by conventional practice, the implant is placed, as described above, the gum tissue is closed, the implant is left for some weeks to become naturally secured through bone growth (“osseointegration”).
After the passage of prescribed time required for implant stability, the implant is re-accessed and, in place of the later-to-be-attached abutment, and if the practitioner has the systems for digital scanning, a scanning body is attached to the implant(s). The “scanning body” is, as the name implies, used for scanning purposes, and in this case, is used to digitally scan the exact position and shape that the final crown will require to provide the patient with the most favorable replacement “tooth.” Absent digital scanning capability, the practitioner will temporarily attach an impression coping, in lieu of a permanent abutment, just so long as to take a physical, tray-based (open tray or closed tray) impression. After this latter, “analog impression,” the impression coping is removed, a healing cap is installed, the incision is once again closed, and the procedures progresses as follows.
Once scanning, or the taking of physical impressions is complete, by convention, a “healing” cap is attached (or re-attached, as the case may be) to the implant, while awaiting placement of the final prosthetic tooth assembly. The healing cap extends from the implant and above the gum line, and serves to provide a “template” about which the soft tissue grows to properly accommodate and “fit” the ultimate abutment and crown. Only after soft tissue healing is the final abutment and permanent crown attached.
The over-all, conventional dental implant process involves several months, to allow for the various healing processes.
It requires no explanation to suggest that any shortening of the process would be desirable. Better still were the number of surgical accesses to the jaw bone and the soft tissue were to somehow be reduced. Were there, for example, to be means and method by which one could reduce multiple accesses to the jaw bone and soft tissue for placing the impression coping, scan body and/or healing cap, the chances of surgical complications (present with any surgical procedure) could be reduced. This alone would be advantageous. However, were such means and method to further enable, for example, the immediate, after-implant-placement installation of a single component that could itself serve as all of: (1) a scanning body (or implant coping—open tray or closed tray), (2) a healing cap, (3) a temporary abutment and (4) as a foundation for a temporary crown—the over-all implant process could be dramatically shortened and the patient experience made measurably less unpleasant (including by having to undergo fewer procedures, and having a functional, temporary restoration while mid-process). Further still, this would logically have a very beneficial impact on over-all costs to patients and insurance.
In view of the foregoing, it would be advantageous to dental patients who are in need of dental implants to provide a means and methods for implant procedures with reduced surgical intervention.
It would be further advantageous at least to dental implant patients, and those financially responsible for services to dental implant patients, to reduce the number or procedures required for dental implant placement.
It would be further advantageous at least to dental implant patients to shorten the duration of over-all dental implant placement and restoration.
The present inventors here disclose a novel and unobvious apparatus and associated method for use in dental implant procedures, which apparatus and method can reasonably be expected to reduce the number of surgical interventions, to reduce the number of steps and reduce the number of product parts needed to complete the dental implant process; reduce the costs associated with dental implant processes, and reduce the over-all duration of the overall dental implant experience.
The apparatus of the present invention is an assembly that serves as a combined scanning body/impression coping (“scanning abutment”), soft tissue forming healing cap, and temporary abutment (hereafter “scanning abutment assembly”). According to the present method, to the scanning abutment assembly of the preferred embodiment is attached a temporary crown to serve as a temporary restoration (prosthetic tooth surface), while awaiting final abutment and permanent crown placement.
The scanning abutment is contoured, depending on the natural tooth's position that the ultimate implant assembly is the occupy, to serve as a healing cap for facilitating appropriate soft tissue re-growth for accommodation of the final, permanent abutment.
The scanning abutment is, in the preferred embodiment, fashioned of PEEK 180 material (PEEK is a polymer—POLYETHERETHERKETONE) that allows it to serve as a traditional scanning body (or impression coping) for digital scanning due to its radiopaque properties, but is also structured for, and suitable for both service as an open tray or closed tray impression coping, as well as a temporary abutment to which a temporary crown may be attached pending healing and fabrication of the final, permanent implant assembly components. In this regard, PEEK 180 is known to be safely left in-place for up to about 6 months.
Because, pending the completion of osteogenesis surrounding the implant, and soft tissue healing, the scanning abutment replaces the functions of a conventional healing cap, as well as a temporary abutment and foundation for a temporary crown until the final abutment and permanent crown may be placed, the scanning abutment obviates the need for at least one surgical accessing of the maxilla and/or mandible for permanent abutment placement. This, because the abutment (serving as a healing cap) already extends from the outset from the implant through the gum line, with soft tissue healing in conformity with, and reading to accept placement of the final abutment.
Referring to
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Whatever the actual, respective, exterior geometric configurations of the crown interface shaft 16 and female lumen 34 of temporary crown 30, it is to be noted that, in a preferred embodiment, the dimensions are not uniform along the respective lengths thereof. Rather, in a first respect, they are respectively adjusted or contoured as needed to accommodate the exterior surface contours of temporary crown 30, and otherwise as may be needed for the present assembly to obviate the need for the conventional healing cap presently used in dental implant procedures. This, because such size and contouring is for mimicking the “footprint” of the natural tooth that the assembly replaces, serving as something of a mold, or guide for the re-growth of soft tissues as they envelope the implant assembly as would occur in surrounding the corresponding, natural tooth. Secondly, a preferred mode of practicing the present method involves a respectively unique contouring of the outer surfaces of each chosen scanning abutment for a particular patient, such that, when the scanning abutments are used for digital scanning, the computer will “recognize” and differentiate individual scanning abutments rather than (as has been reported in the use of some conventional scanning bodies) mistaking a grouping as a single unit).
The transition from crown interface shaft 16 and flange 14 is configured as a circumferential ridge, here to be identified as the male crown clip 18. Male crown clip 18 is configured to reversibly engage with a circumferential recess 36 that is formed within the temporary crown 30 (to be identified, correlated with figures and discussed more fully hereafter).
A central lumen 20 extends centrally/axially along the length of scanning abutment 10, through which attachment means (not shown in the drawings) are passed and manipulated by a practitioner for attaching scanning abutment 10 to an implanted dental implant (not shown in the drawings).
Referring to
As mentioned previously, scanning abutment is, in the preferred embodiment, fashioned from a material known in the field as “PEEK”. This material is both sufficiently durable to allow for the term of use needed prior to final attachment of a permanent abutment (not shown in the drawings), as well as having properties suitable for digital scanning purposes as is known in the art.
The advantages arising from substituting conventional apparatus and associated methods with those of practicing the present invention include those described above in the Summary of the Invention portion hereof.
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limited sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the inventions will become apparent to persons skilled in the art upon the reference to the description of the invention. It is, therefore, contemplated that the appended claims will cover such modifications that fall within the scope of the invention.
The present application claims priority to U.S. Provisional Application No. 62/782,806, titled “Multi-Function Dental Implant System,” which was filed on Dec. 20, 2018.
| Number | Date | Country | |
|---|---|---|---|
| 62782806 | Dec 2018 | US |
