A dental implant surgical guide, its design method and system. A surgical guide has an adaption surface to fit onto patients oral dental anatomy, as well as holes to guide the drills and to provide depth control to the drilling operations. In prior art, drill guiding holes have to be specifically designed and made for a targeted surgical kit. In this invention, a series of preferred diameters are predefined for the drilling holes or sleeves, a surgical guide is designed for the preferred diameters and a universal surgical kit is designed accordingly. Indexing geometric features are added to the surgical guide to indicate the key parameters for drilling depth control. As a result the surgical guide and universal surgical kit can be used with any implant brands. Software system designing such surgical guides includes components to generate base model, define and select preferred diameters, add form features, and export treatment plan with plan adaption instructions.
