Surgical template for placing orthodontic or dental implants, comprising: - a shaped body reproducing the shape of an oral cavity portion of a patient, and - at least one guiding opening formed in the shaped body for guiding an orthodontic or dental implant and/or a corresponding placing tool while placing the orthodontic or dental implant in a predetermined point of said oral cavity portion, wherein the at least one guiding opening comprises: - a first guiding portion laterally delimited by a first guiding surface having a cylindrical development and defining a first guiding axis (X1-X1) which extends through the at least one guiding opening; - a second guiding portion laterally delimited by a second guiding surface having a cylindrical development and defining a second guiding axis (X2-X2) which extends through the at least one guiding opening and crosses said first guiding axis (X1-X1), and - a third guiding portion, which connects the first guiding portion and the second guiding portion with each other and is configured so as to guide a movement of the orthodontic or dental implant and/or of the corresponding placing tool between the first and the second guiding portion carried out by pivoting on an intersection point of said first (X1-X1) and second guiding axes (X2-X2), wherein the third guiding portion is laterally delimited by a pair of mutually opposite guiding walls having a parallel course, characterized in that said first guiding surface defines a first diameter, said second guiding surface defines a second diameter different from the first diameter, and said guiding walls have a distance from each other which is constant and equal to the smallest of said first and second diameters. - a shaped body reproducing the shape of an oral cavity portion of a patient, and - at least one guiding opening formed in the shaped body for guiding an orthodontic or dental implant and/or a corresponding placing tool while placing the orthodontic or dental implant in a predetermined point of said oral cavity portion, wherein the at least one guiding opening comprises: - a first guiding portion laterally delimited by a first guiding surface having a cylindrical development and defining a first guiding axis (X1-X1) which extends through the at least one guiding opening; - a second guiding portion laterally delimited by a second guiding surface having a cylindrical development and defining a second guiding axis (X2-X2) which extends through the at least one guiding opening and crosses said first guiding axis (X1-X1), and - a third guiding portion, which connects the first guiding portion and the second guiding portion with each other and is configured so as to guide a movement of the orthodontic or dental implant and/or of the corresponding placing tool between the first and the second guiding portion carried out by pivoting on an intersection point of said first (X1-X1) and second guiding axes (X2-X2), - a first guiding portion laterally delimited by a first guiding surface having a cylindrical development and defining a first guiding axis (X1-X1) which extends through the at least one guiding opening; - a second guiding portion laterally delimited by a second guiding surface having a cylindrical development and defining a second guiding axis (X2-X2) which extends through the at least one guiding opening and crosses said first guiding axis (X1-X1), and - a third guiding portion, which connects the first guiding portion and the second guiding portion with each other and is configured so as to guide a movement of the orthodontic or dental implant and/or of the corresponding placing tool between the first and the second guiding portion carried out by pivoting on an intersection point of said first (X1-X1) and second guiding axes (X2-X2), wherein the third guiding portion is laterally delimited by a pair of mutually opposite guiding walls having a parallel course, characterized in that said first guiding surface defines a first diameter, said second guiding surface defines a second diameter different from the first diameter, and said guiding walls have a distance from each other which is constant and equal to the smallest of said first and second diameters.