Accurate Analogs For Prosthesis Using Computer Generated Anatomical Models

Abstract

Pre-surgical planning for cranial and facial reconstruction includes preparing a computer generated jaw or skull model for determining a locational position for a dental implant, a surgical bone implant to repair missing bone in the cranium, install ear prostheses, and/or install nose prostheses. The computer generated jaw or skull model is made from medical imagery and computer aided design. A surgical guide is prepared with oversize holes in registration with analogs for the dental or surgical bone implants to be inserted in the jaw or cranial skull model. The surgical guide is fitted atop each analog, and bonded to the jaw or skull model at a predetermined angle of the analog in the jaw or skull. The surgical guide is removed and attached to the jaw or skull of a patient for accurate drilling for insertion of the implants into the jaw or skull of the patient.

1 - 25 . (cancelled) 
     
     
         26 . An anchored anti-rotation analog post assembly in combination with a model of a mouth of the patient for preparing a dental crown for insertion into the mouth of a patient,
 a settable model of the mouth of the patient for preparing an implant post for insertion within the jaw of the patient,   said analog post comprising:   an elongated post of single piece construction having opposite top and bottom ends;   said elongated post having at least one anti-rotation, secured anchoring member, excluding rings, extending discretely inwardly from an outer surface of said post and spaced from said bottom end;   said elongated post adapted for use within said settable model of the jaw of the mouth of the patient for preparing an implant post insertable within the jaw of the patient, wherein the shape and insertion positional location orientation of said elongated post insertable within the jaw of the patient is modeled on a predetermined shape and positional locational orientation of said elongated post within said model of the jaw of the patient's mouth; and   said at least one anti-rotational member comprising at least one annular groove cut into at least a portion of an outer periphery thereof and extending within in an outer surface of said elongated post for preventing rotation of said analog post within said settable model of the jaw of the mouth of the patient   
     
     
         27 . The anti-rotation analog post assembly as in  claim 26  further comprising said elongated post having a knurled outer surface. 
     
     
         28 . An anchored anti-rotation analog post assembly in combination with a model of the mouth of a patient for preparing a dental crown, for preparing a dental crown for insertion into the mouth of a patient, comprising:
 a settable model of the mouth of the patient for preparing an implant post for insertion within the jaw of the patient;   an analog post, said analog post further comprising:   an elongated post of single piece construction having opposite top and bottom ends;   said post having an upper portion extending adjacent said top end and a lower portion extending adjacent said bottom end;   said elongated post having at least one anti-rotation recess, cut into at least a portion of an outer periphery thereof and extending inwardly from an outer surface of said elongated post;   said lower portion of said elongated post embedded within said settable model of the jaw of the mouth of the patient for preparing an implant post for insertion within the jaw of the patient, wherein the shape and insertional positional location orientation of said elongated post insertable within the jaw of the patient is modeled on a predetermined shape and positional locational orientation of said elongated post within said model of the patient's mouth; and   said at least one anti-rotation recess extending inward from the outer surface of said elongated post at a lower portion of a side of said elongated post, adjacent a bottom end of said elongated post, for preventing rotation of said analog post within said settable model of the jaw of the mouth of the patient.   
     
     
         29 . The anti-rotation analog post assembly as in  claim 28  further comprising said elongated post having a knurled outer surface. 
     
     
         30 . The anchored anti-rotation analog post assembly in combination with a model of a mouth of a patient for preparing a dental crown of  claim 26  wherein said model is a plaster stone model formed by an impression of a portion of the patient's jaw. 
     
     
         31 . The anchored anti-rotation analog post assembly in combination with a model of a mouth of a patient for preparing a dental crown of  claim 26  wherein said model is a stereolithographic plastic resin model formed by a computer generated image of the patient's jaw. 
     
     
         32 . The anchored anti-rotation analog post assembly in combination with a model of a mouth of a patient for preparing a dental crown of  claim 28  wherein said model is a plaster stone model formed by an impression of a portion of the patient's jaw. 
     
     
         33 . The anchored anti-rotation analog post assembly in combination with a model of a mouth of a patient for preparing a dental crown of  claim 28  wherein said model is a stereolithographic plastic resin model formed by a computer generated image of the patient's jaw.