Abstract: A device is operatively associated with a drill used in connection with forming a hole in which a dental implant is to be installed. The device is made in multiple sizes suitable for accommodating differences in spacing between existing teeth between which one or more new prosthetic teeth are to be installed as well as accommodating differences in the bucco-lingual alveolar ridge width and the mesio-distal alveolar ridge length between the existing teeth where the implant is to be installed. The device is formed in such a way as to aid correct placement of the dental drill during implant surgery. The device permits the size of the proposed implant to be evaluated by visual comparison with the size of the selected implant site. The device further permits locating the dental implant pilot drill correctly so as to achieve successful implant placement.