Cantilever dental implant guidestent and method
OwnerBenjamin J. Czerniawskiinventor
Life of this patent
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Abstract
The present invention is directed to a cantilevered surgical stent for use in dental implant surgery for spacially orienting the implant fixture with respect to a predetermined reference point. The cantilevered surgical stent of the present invention provides the surgeon with enhanced access to the surgical site, the ability to accommodate virtually any direction of flap reflection, and the ability to apically locate sufficient bone volume for primary or secondary surgical sites with respect to the predetermined spacial reference point. As a related object, the present invention is directed to a surgical protocol for dental implant placement procedure using the cantilevered surgical stent.
Claims15
A cantilevered surgical stent which is placed in a patient's mouth for permitting a surgeon to implant one of more endosseous dental implant fixtures in a desired orientation with respect to an edentulous ridge section of the patient's jawbone, said surgical stent comprising:
- a base member positioned within the patient's mouth;
- and
- guide means cantilevered from said base member for spatially orienting said dental implant fixture with respect to a predetermined reference point displaced from said edentulous ridge including a guide wire having a first portion fixedly coupled to said base member, and a second portion adjacent said first portion which is cantilevered from said base member, said second portion including centering means for spatially locating said predetermined reference point with respect to said edentulous ridge section such that said predetermined referenced point defines the apex of a conical area having its base located at said edentulous ridge section, wherein the surgeon is able to apically select a desired drill trajectory with respect to said predetermined reference point for implantation of said dental implant fixture into said edentulous ridge section, said predetermined reference point being spatially positioned for approximating a desired incisal edge or occlusal table height from which a prosthesis can be fabricated that is in proper registry with opposing dentition.
A method for fabricating a cantilevered surgical stent to be placed in a patient's mouth for permitting a surgeon to implant one or more endosseous dental implant fixtures in a desired orientation with respect to an edentulous ridge section of the patient's jawbone, said method comprising the steps of:
- forming a reproduction via diagnostic casts of the patient's edentulous ridge section;
- predicting the bone availability within the edentulous ridge section for dental implant placement therein;
- fabricating a preliminary diagnostic prosthesis having proper occlusal alignment with opposing dentition;
- fabricating the cantilevered surgical stent to include base means for direct placement in the patient's mouth and cantilevered guide means which extend from said base means for defining a predetermined spatial reference point with respect to said preliminary diagnostic prosthesis and its underlying edentulous ridge, said predetermined reference point being spatially located remotely from said base means for approximating a preferred incisal edge or occlusal table height location for the implanted fixtures whereby fabrication of a permanent prosthesis having proper registration with opposing dentition is permitted with respect to said predetermined reference point.
A method for spatially orienting an endosseous dental implant fixture with respect to a predetermined reference point during dental implant surgery, said method comprising the steps of:
- placing a cantilevered surgical stent in the patient's mouth so as to position a base member of said cantilevered surgical stent with respect to an edentulous ridge section of the patient's jawbone, said cantilevered surgical stent having guide means cantilevered from said base member and adapted for defining the predetermined spatial reference point with respect to said edentulous ridge;
- locating a drill tool relative to said cantilevered guide means such that a shank portion of said drill tool intersects the predetermined spatial reference point, said predetermined reference point defines an apex of a conical area having its base located at said edentulous ridge;
- apically selecting a drill trajectory into said edentulous ridge section with respect to said predetermined spatial reference point;
- drilling a bore into said edentulous ridge section of the patient's jawbone along said selected drill trajectory;
- and
- implanting the endosseous dental implant fixture within said bore whereby said cantilevered surgical stent permits fixture angulation in said edentulous ridge while spatially maintain said predetermined reference point.
Dependencies are inferred from the claim text.