Method for establishing drill trajectory for dental implants

A method of aligning a drill bit for preparing a bore to receive a dental implant, the method comprising:

• creating a three-dimensional model of a surgical site and selecting an initial linear trajectory for drilling an initial proposed bore;
• creating a frame to position a cartridge coronal to the surgical site, the frame prepared to fit patient anatomy adjacent to the surgical site and having a chamber to receive the cartridge;
• creating an initial cartridge with an opening from a coronal side of the initial cartridge to an apical side of the initial cartridge;
• placing the initial cartridge into the chamber;
• placing a guide sleeve in the opening in the initial cartridge to form an initial assembly, the opening in the initial cartridge sized to constrain an orientation of the guide sleeve so that a longitudinal axis of a coronal to apical bore in the guide sleeve is positioned a known offset from the initial linear trajectory;
• obtaining at least one input with a known relationship to the initial linear trajectory;
• using the at least one input to enhance the three-dimensional model of the surgical site and select a surgical plan to plan a surgical bore with:
• an apical end;
• a coronal end;
• a diameter;
• and
• a surgical linear trajectory;
• the surgical bore selected to stay within a bone volume found at the surgical site;
• placing a surgical cartridge into the chamber of the frame;
• and
• placing a guide sleeve in the surgical cartridge;
• and
• the guide sleeve is constrained by a coronal to apical opening in the surgical cartridge so that a longitudinal axis of a coronal to apical bore in the guide sleeve is oriented along the surgical linear trajectory such that the guide sleeve may be used to constrain a drilling trajectory of the drill bit along the surgical trajectory.