Methods for placing an implant analog in a physical model of the patient's mouth
View Patent ↗A method of placing a dental implant analog in a physical model for use in creating a dental prosthesis is provided. The physical model, which is usually based on an impression of the patient's mouth or a scan of the patient's mouth, is prepared. The model is scanned. A three-dimensional computer model of the physical model is created and is used to develop the location of the dental implant. A robot then modifies the physical model to create an opening for the implant analog. The robot then places the implant analog within the opening at the location dictated by the three-dimensional computer model.
1. A method of performing guided surgery in a patient's mouth, comprising:
taking a CT-scan of the patient's mouth to develop CT-scan data;
developing, on a 3D-computer model, a surgical plan based on the CT-scan data, the surgical plan including at least one virtual implant, the virtual implant having virtual-implant location data and virtual implant orientation data corresponding to a non-rotational feature on the virtual implant;
based on the surgical plan, manufacturing a surgical guide to be placed in the patient's mouth for installing an implant in the patient's mouth at substantially the same location and orientation as the virtual implant on the 3D-computer model;
based on the CT-scan data and the virtual-implant location and orientation data from the surgical plan, manufacturing, via rapid prototyping, a physical model of the patient's mouth having an integral implant analog structure at substantially the same location and orientation as the virtual implant on the 3D-computer model, the integral implant analog structure being made of the same material as other parts of the rapid-prototyped physical model, the rapid-prototyped physical model including a contoured opening that is sized and shaped based on a size and shape of a custom abutment to be installed on the implant in the patient's mouth, the integral implant analog structure being located within the contoured opening;
developing a custom prosthesis on the physical model, the developing including mounting the custom abutment at least partially within the contoured opening and on the integral implant analog structure and using the mounted custom abutment to create the custom prosthesis, the custom prosthesis including tooth-shaped material that fits on the custom abutment;
performing surgery to place the implant in the patient's mouth as physically guided by the surgical guide in accordance with the surgical plan; and
installing the custom abutment and the custom prosthesis on the implant in the patient's mouth.
2. The method of claim 1 , wherein the surgical guide is manufactured to fit precisely over the patient's dentition.
3. The method of claim 1 , further comprising locating the surgical guide in the patient's mouth prior to performing the surgery such that the surgical guide engages gum tissue or existing teeth in the patient's mouth.
4. The method of claim 1 , wherein the surgical guide includes one or more apertures configured to receive drill bits therethrough.
5. The method of claim 4 , wherein the performing surgery includes installing the implant in the patient's mouth by inserting the implant through the one or more apertures included in the surgical guide.
6. The method of claim 1 , wherein each of the one or more apertures in the surgical guide is configured to receive a specifically sized implant.
7. The method of claim 1 , wherein the performing surgery includes using one or more drill bits to create an osteotomy in the patient's mouth configured to receive the implant.
8. A method of developing a physical model of a mouth of a patient for use in developing a custom prosthesis for attachment to a dental implant installed in the mouth of the patient, the method comprising:
scanning the mouth of the patient to develop scan data;
by use of the scan data, developing a 3D-computer model of the mouth of the patient;
developing, by use of the 3D-computer model, a surgical plan including a virtual implant, the surgical plan including virtual-implant location data that corresponds to a location of the virtual implant in the 3D-computer model of the mouth of the patient; and
by use of the 3D-computer model and the virtual-implant location data, manufacturing, via rapid prototyping, a physical model of the mouth of the patient, the physical model including an integral implant analog structure at substantially the same location as the virtual implant in the 3D-computer model, the physical model being used to develop a custom prosthesis by use of the integral implant analog structure, the integral implant analog structure being made of the same material as other parts of the rapid-prototyped physical model, the physical model including a contoured opening that is sized and shaped based on a size and shape of a custom abutment to be installed on the dental implant in the patient's mouth, the integral implant analog structure being located within the contoured opening.
9. The method of claim 8 , wherein the integral implant analog structure includes a physical replica of at least a portion of the virtual implant.
10. The method of claim 8 , further comprising based on the surgical plan, manufacturing a surgical guide that is configured to fit in the mouth of the patient, the surgical guide including one or more apertures.
11. The method of claim 10 , further comprising positioning the surgical guide in the mouth of the patient such that the surgical guide engages at least one of gum tissue or dentition in the mouth of the patient.
12. The method of claim 11 , further comprising by use of the surgical guide in accordance with the surgical plan, creating an aperture in bone tissue of the mouth of the patient that is configured to receive the dental implant.
13. The method of claim 12 , further comprising by use of the surgical guide in accordance with the surgical plan, installing the dental implant into the aperture created in the bone tissue, the surgical guide aiding in installing the dental implant in the mouth of the patient at substantially the same location and orientation as the virtual implant on the 3D-computer model.
14. The method of claim 8 , further comprising:
mounting the custom abutment at least partially within the contoured opening and on the integral implant analog structure; and
developing the custom prosthesis on the custom abutment mounted to the physical model of the mouth of the patient, the custom prosthesis including tooth-shaped material that fits on the custom abutment.
15. The method of claim 14 , further comprising performing surgery to place the implant in the mouth of the patient in accordance with the surgical plan.
16. The method of claim 15 , further comprising installing the custom abutment and the custom prosthesis on the implant in the mouth of the patient.