Surgical guides and methods for positioning artificial teeth and dental implants
View Patent ↗A method is set forth for making a computer model of patient's jaws on the basis of digital information. Digital data about the jaws, teeth, soft tissues and artificial teeth is joined in computer space to create aesthetic and functional plans for the removal of teeth, shaping of supporting bone and placement of dental implants. Artificial teeth and pre-manufactured prosthetic devices are made and attached to the dental implants at the time of surgery. The aesthetic and functional position of artificial teeth is determined prior to surgical removal of natural teeth and the ideal position of implants and the proper form of the remaining bone are determined prior to surgery. Surgical guides used to shape bone, record occlusal orientation and position dental implants are manufactured using computer milling or layered manufacturing.
1. A method of creating a surgical drill guide, comprising:
generating a virtual model of a portion of a patient's jaw, said virtual model comprising a virtual jaw and virtual teeth;
shaping the virtual model;
virtually extracting at least one but less than all of the virtual teeth from the virtual model, thus leaving one or more remaining virtual teeth;
introducing virtual dental implants to the virtual model;
generating a virtual drill guide shaped to fit on the virtual jaw, the virtual drill guide indicating the position of the virtual dental implants, wherein said generating a virtual drill guide includes shaping the virtual drill guide to fit against at least one of the remaining virtual teeth and against a surface of the portion of the patient's jaw; and
manufacturing an actual drill guide based on data of the virtual drill guide.
2. The method of claim 1 , wherein said generating a virtual model includes:
scanning a portion of the patient's jaw to obtain scan data; and
generating a 3-D image of the portion of the patient's jaw.
3. The method of claim 1 , wherein said shaping the virtual model includes removing jaw material that overlaps with virtual denture teeth.
4. The method of claim 1 , wherein said shaping the virtual model includes shaping the virtual jaw to permit restorative materials to be added therein.
5. The method of claim 1 , including removing all the remaining virtual teeth from the virtual jaw;
introducing second virtual dental implants to the virtual model;
generating a second virtual drill guide shaped to fit on the virtual jaw, the second virtual drill guide indicating the position of the second virtual dental implants; and
manufacturing an actual second drill guide based on data of the second virtual drill guide.
6. The method of claim 1 , wherein the portion of the patient's jaw includes virtual teeth corresponding to actual patient teeth, the method comprising:
replacing at least one virtual tooth of the virtual teeth with a virtual denture tooth; and
virtually removing portions of the virtual jaw to provide space to fit restorative material between the virtual denture tooth and the portion of the patient's jaw.
7. The method of claim 1 , wherein said manufacturing an actual drill guide includes:
transferring code based on the virtual drill guide to a CNC mill; and
milling the actual drill guide on a CNC mill.
8. The method of claim 1 , including
scanning a dental cast to obtain scan data; and
replacing at least one virtual tooth of the virtual teeth with a virtual tooth generated from the scan data.