Crowns and removable bridges have often been the approach to preserving diseased teeth or replacing lost teeth. However, such devices tend to fail due to the genetic predisposition of tooth decay and periodontal disease that natural teeth cause in some high risk patients. As a result patients often experience an endless cycle of dental work, with the risk that each procedure increasingly limits dental function and compromises quality of life.
As a solution to such problems, the hybrid fixed bridge (e.g., Hybridge™ and other brands) has been developed. Such a bridge replaces all of the patient's upper and/or lower teeth. The fixed bridge is permanently supported on multiple (typ. 4 or more) dental implants and looks, feels and functions like healthy, natural teeth, and also preserves the jaw bone as a result of stimulation of the bone supporting the implants, thereby preventing bone loss and preserving facial appearance.
It is not uncommon to utilize threaded implants to support fixed-detachable dentures and other prostheses within a patient's mouth. Also, threaded dental implants have been used to support prostheses at or shortly after the time the implants are placed. For example, P. A. Schnitman et al. (Int-J-Oral-Maxillofacial-Implants. 1997 Jul.-Aug. 12(4):495-503), D. P. Tarnow et al. (Int-J-Oral-Maxillofacial-Implants. 1997 May-Jun.: 12(3):319-24) and G. Kammeter et al. (J Prosthetic Dent. 2001 May; 87(5):473-476) have all described “immediate loading” of implants. For example, the term “immediate denture” is also defined by The Academy of Prosthodontics (THE JOURNAL OF PROSTHETIC DENTISTRY; THE GLOSSARY OF PROSTHODONTIC TERMS (GPT-9), Ninth Ed., May 2017, p. e47) as “any fixed or removable dental prosthesis fabricated for placement immediately following the removal of a natural tooth/teeth” or dentition. The embodiments disclosed herein advocate placing a final, definitive prosthesis with an “early” or “progressive loading” protocol, where initially, a temporary denture is placed on the implants (the provisional) and subsequently the definitive prosthesis is placed. Loading of fixed hybrid bridges (within 2-3 weeks of surgery), using the techniques disclosed herein for immediate and early loading, are believed to be more predictable, easier, more cost effective, with less steps, and more precise for a number of reasons, including the manner of preparing for (impressions, radiographic scans, etc.), simultaneously establishing tooth position, time for producing and installing temporary and definitive fixed hybrid bridges, etc. An exemplary disclosure of such a system and methodology is found, for example, in published U.S. Patent Application 2009/0081618 for a SYSTEM AND METHOD FOR IMMEDIATE LOADING OF FIXED HYBRID DENTAL PROSTHESES, by Frank R. LaMar, published Mar. 26, 2009, which is hereby incorporated by reference in its entirety. Moreover, the improved techniques and protocols for edentulous mandibles and maxillas as disclosed herein are not believed to have been previously considered.
The timely completion of a fixed hybrid bridge is desirable by many patients. Moreover, aspects of the hybrid bridge system and methodology, as disclosed in detail herein, provides a fixed restoration that may be preferred by many patients, provides improved masticatory function, provides improved aesthetics with ideal gingival contours, and importantly is cost effective as it only requires about five to six implants and uses a simplified technique. Most patients are candidates depending upon the quantity of bone in the symphysis of the mandible and the premaxilla of the maxilla. Once a patient is evaluated for a fixed hybrid bridge, one of the treatment protocols disclosed below may be completed in a timely manner to assure a successful outcome. Moreover, the embodiments disclosed below provide the added value of digital capture of physical patient information—such as implant location and orientation relative to bone, tissue, and teeth—as a means to substantially shorten the time, and the number of patient appointments, to design, manufacture and install a dental prosthetic(s) for a patient.
Disclosed in embodiments herein is a healing assembly, for use in a dental implant procedure on a patient's alveolar tissue (e.g., mandible or maxilla), comprising: a prosthetic shoe for attachment to the dental implant; and a healing sleeve, removably mated with said prosthetic shoe, said healing sleeve having a generally cylindrical outer surface.
As part of disclosed embodiments, the prosthetic shoes are initially attached to implants to facilitate imaging, design of a prosthesis, and the installation of healing sleeves after implants are installed, and then the shoes (or identical equivalents) end up being the means by which the full prosthesis is attached to the implants. In other words the prosthetic shoes are adhered to and become an integral part of the prosthesis.
Further disclosed in embodiments herein is an apparatus for use with a plurality of dental implants inserted as a precursor to the attachment of a fixed bridge to said implant, comprising: a prosthetic shoe for attachment to each dental implant; and a healing sleeve, removably mated with said prosthetic shoe, said healing sleeve having a generally cylindrical outer surface, wherein said prosthetic shoe and said healing sleeve each have at least one tapered mating surface feature to assure the relative position of the healing sleeve to the prosthetic shoe, where the prosthetic shoe is tapered on at least one exterior surface thereof and where the one mating feature includes a tapered interior surface on the healing sleeve, said tapered interior surface matching the taper of the exterior surface of said prosthetic shoe.
Disclosed herein is an apparatus, for use in a dental implant procedure, comprising a healing cap, said healing being suitable for removable mating with a prosthetic shoe that may be attached to a dental implant, said healing cap including: a generally cylindrical outer surface on a least a portion thereof, said cylindrical outer surface including a first annular groove about a bottom portion of the healing sleeve outer surface, and a second, larger annular groove adjacent a radiused top portion of the healing sleeve outer surface to form a bulbous top on the healing cap outer surface, at least one interior mating surface feature to assure a relative position of the healing cap to the prosthetic shoe, where the at least one mating feature includes a tapered interior surface on the healing cap, said tapered interior surface generally matching a taper of an exterior surface of said prosthetic shoe; and at least one feature protruding from an interior surface of said healing cap, said at least one feature suitable for engaging a feature of the prosthetic shoe to removably attach the healing cap to the prosthetic shoe.
Also disclosed herein is a method of preparing at least one dental implant suitable for retaining a dental prosthesis within a patient's mouth, comprising: inserting a dental implant into the patient's alveolar tissue (mandible or maxilla); attaching a prosthetic shoe to the dental implant, said prosthetic shoe having an exterior surface with at least one annular groove thereabout; and temporarily affixing, in a mating relationship with the prosthetic shoe, a healing sleeve having a generally cylindrical outer surface on at least a first end of the healing sleeve and a tapered interior surface on the interior surface of the first end, said tapered interior surface matching the taper of the prosthetic shoe when said healing sleeve is affixed thereon; wherein said combination of the prosthetic shoe and the healing sleeve further prevents the post-insertion overgrowth of gingival tissue over the implant.
Further disclosed in embodiments herein is a method of preparing for installation of a fixed bridge-type dental prosthesis within a patient's mouth, comprising: inserting a plurality of dental implants into the patient's alveolar tissue (mandible or maxilla); attaching a prosthetic shoe to each of the dental implants, said prosthetic shoes each having a tapered exterior surface with at least one annular groove thereabout; and temporarily affixing, to each of the prosthetic shoes, a healing sleeve having a generally cylindrical outer surface on a first end of the healing sleeve and a tapered interior surface on the interior surface of the first end, said tapered interior surface matching the taper of the prosthetic shoes when said healing sleeves are affixed thereon; wherein the combination of the prosthetic shoes and respective healing sleeves further prevent the post-insertion overgrowth of gingival tissue over the implants. In accordance with a further aspect of the disclosed embodiments, the healing sleeves may be radiographically translucent, which provides the ability to take a digital radiographic image of the underlying prosthetic shoe (affixed to the implant) immediately after surgery and thereby facilitate the accurate and immediate manufacture of the dental prosthetic.
The various embodiments described herein are not intended to limit the disclosure to those embodiments described. On the contrary, the intent is to cover all alternatives, modifications, and equivalents as may be included within the spirit and scope of the various embodiments and equivalents set forth. For a general understanding, reference is made to the drawings. In the drawings, like references have been used throughout to designate identical or similar elements. It is also noted that the drawings may not have been drawn to scale and that certain regions may have been purposely drawn disproportionately so that the features and aspects could be properly depicted.
As used herein, the following terms and acronyms are intended to have the meaning indicated, however, such terms are used as illustrative examples and are not intended to limit the scope of the disclosed embodiments:
Prosthetic Tooth Set-up: A predetermined mock-up of the anticipated tooth position and final tooth contours, typically in the form of a removable denture.
Fixed Hybrid Bridge: the name usually referred to when referring to a “Full Arch, screw retained, implant supported, fixed bridge.
Referring to
Referring also to
In one embodiment, the prosthetic shoe 116 includes at least one annular groove 130 about an outer surface thereof. The groove may have a squared or radiused bottom profile. Moreover, prosthetic shoe 116 may be reused during attachment of a prosthesis to the dental implant, where the annular groove(s) provides a surface by which the prosthetic shoe is adhered to the prosthesis.
As illustrated in
As will be appreciated, to facilitate its flexibility relative to the attachment to the prosthetic shoe, the healing sleeve may be made from a non-metallic material such as a “plastic”. While a number of plastic materials may be employed, and the method of manufacture may include machining (CNC, screw machine, etc.) and molding, the particular process used is not believed to be critical and may be largely dependent upon the material used for the healing sleeve. In one embodiment, to facilitate the design and placement of a Fixed Bridge Type prosthesis, the healing sleeve 118 may be formed of a non-metallic material such as an engineering thermoplastic, or more particularly an acetal homopolymer resin such as Delrin® by Dupont or an ultra-high performance biocompatible thermoplastic such as polyaryletherketone (e.g., TECAPEEK Classix™ or PEEK Optima™ available from Ensinger Ltd. or Invibio® Ltd). Moreover, the “radiotranslucent” or radiographically translucent (or possibly even radiographically opaque) material provides an added advantage of enabling the radiographic imaging of the patient's tissue, implants, prosthetic teeth positions, and associated prosthetic shoes with the healing sleeves in place, thereby eliminating or at least reducing costly and time-consuming steps conventionally required for the design and installation of a fixed bridge prosthetic device to the dental implants.
As further illustrated in
As described above relative to
As represented in
Referring next to
As represented in
As suggested above, the use of a radiographically transparent material for the healing sleeves enables the radiographic imaging of the patient's mouth, including the prosthetic tooth position, the implants, prosthetic shoes and tissue surfaces as illustrated, for example, in
Although it will be appreciated that various features may be presented on the outer surface of the prosthetic shoe to facilitate binding or adhesion to the prosthesis, the illustrated embodiment employs multiple annular grooves 130, concentrically located about the tapered exterior surface of the prosthetic shoe.
This configuration, and the details of the grooves themselves, are shown in detail in the drawings of
Referring next to remaining
A final prosthetic (bridge), as designed, is depicted in
Also contemplated is the use of two sets of prosthetic shoes where a first set is employed as described to facilitate imaging and installation of a temporary prosthetic using the disclosed healing sleeves or caps. Then, upon completion of the permanent dental prosthetic, for each dental implant the first prosthetic shoe is removed from the implant, and the shoe or an identical, second prosthetic shoe is employed and is permanently adhered to the permanent dental prosthetic, and the prosthetic shoe is then used for attachment of the dental prosthetic to the dental implant using a fastener such as a threaded screw. It will be appreciated that the nature and configuration of the fastener is dictated by the type of implant(s) being employed. In other words, the prosthetic shoe starts out attached to the implant for imaging and healing after the implant is installed, and then the shoe (or an identical equivalent) ends up being the means by which the full prosthesis is attached to the implant. The prosthetic shoe becomes an integral part of the prosthesis once it is adhered.
Another advantage of the use of the disclosed healing apparatus, particularly including a bulb-shape on the top thereof is that a temporary prosthesis may be adhered to the healing sleeve with the bulb-shaped top providing a surface for improved retention and stability of the prosthetic tooth set-up. In summary, the disclosed healing assembly provides advantages in indexing of the implant position, healing, imaging of the implant and the associated prosthetic shoe, and the reuse of the prosthetic shoe by allowing it to be permanently affixed to the prosthesis and thus serving as the means by which the prosthesis is attached to the implants.
In summary, one method for installation of a fixed bridge-type dental prosthesis within a patient's mouth, includes inserting multiple dental implants 114 into the patient's alveolar tissue 140 (mandible or maxilla), and attaching a prosthetic shoe 116 to each of the dental implants using a center screw through the prosthetic shoes each having a tapered exterior surface with at least one annular groove. To each of the prosthetic shoes, a healing sleeve 118 is temporarily affixed. At one end the healing sleeve has a generally cylindrical outer surface and a tapered interior surface, where the taper matches that of the prosthetic shoes when said healing sleeves are affixed thereon. In addition to the several uses made of the prosthetic shoes and healing sleeves, the combination further prevents the post-insertion overgrowth of gingival tissue over the implants.
It should be understood that various changes and modifications to the embodiments described herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present disclosure and without diminishing its intended advantages. It is therefore anticipated that all such changes and modifications be covered by the instant application.
This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 62/377,564 for DIGITAL FULL ARCH APPARATUS AND METHOD FOR DENTAL PROSTHESES, by F. Lamar et al., filed Aug. 20, 2016, which is hereby incorporated by reference in its entirety. The apparatus and methods disclosed herein permit the efficient design and installation of a fixed bridge type dental prosthesis without customary try-ins, model verification jigs, setups and other prosthetic validation steps. The prosthesis design includes radiographic scanning of a patient's jaw and mouth, including features such as dental implants, associated prosthetic shoes, final prosthetic tooth set-up, as well as tissue surfaces to facilitate the immediate loading (days-weeks) of a dental prostheses (e.g., fixed bridge type) into the mouth, thereby further reducing the delay and the number of steps needed in the clinical and dental laboratory settings to fabricate and install the prostheses and complete the patient's treatment.
Number | Date | Country | |
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62377564 | Aug 2016 | US |