Background: Dental implant therapy is a financially and esthetic demanding process. Therefore, it is imperative for dental implants to be a success. Dental indices provide a quantitative method for measuring, scoring and analyzing dental conditions in individuals and groups. Content: Conventional methods used for evaluation of peri-implant health include peri-implant probing depths (PD), some form of recording for gingival inflammation, plaque accumulation, radiographic evaluation, peri-implant crevicular fluid (PICF) evaluation, and recording implant stability. All methods are helpful but possess inherent limitations especially regarding implant health prognostication. No standard indices similar to those used for the evaluation of periodontal conditions have been defined for the characterization of peri-implant tissues. Periodontal parameters are not strictly applicable to the features of tissues encountered around implant fixtures. Conclusion: There is no working classification for indices based on its relationship with peri-implant hard and soft tissue analysis. Hence, an attempt is made in this chapter to compile currently available literature on the indices in oral implantology for defining success criteria, planning of the implant, at diagnostic stage, esthetics evaluation, maintenance of the peri implant site.