Method of making a surgical template used for a computer-guided dental implant surgery

A method of making a surgical template used for a computer-guided dental implant surgery, comprising the steps of:

• (a) producing a three-dimensional model by a CT scanning performed on a patient's jaw and establishing corresponding implant planning data to obtain a digital model of an assembly of the patient's jaw and the implant planning data;
• (b) making a negative model by direct impression modeling of the patient's jaw, and then a positive plaster model from the negative model, and producing a digital plaster model corresponding to the positive plaster model;
• (c) positioning the digital model of the assembly of the patient's jaw and the implant planning data relative to the digital plaster model to allow the digital plaster model to have the implant planning data;
• (d) integrating the digital plaster model with the implant planning data to obtain a digital machining data, the digital machining data including a plaster model and at least one implant-position indicating unit configured as a pin extending from the plaster model;
• (e) holding and machining a modeling block at a machining position by a machine according to the digital machining data to form a solid jaw model corresponding to the patient's jaw and having teeth, gums, and at least one implant-position indicating structure configured as a pin extending from the solid jaw model;
• and
• (f) producing a negative template body from the solid jaw model with a thermoplastic dental material by one of a molding process and a vacuum forming process such that the negative template body has a lower surface complementary to the solid jaw model, and at least one implant guide hole formed therethrough at a position corresponding to the implant-position indicating structure;
• whereby, the surgical template includes the negative template body.