Implant (IM) placement in non-esthetic zone is generally performed within 3–4 months after extraction. However, occasionally, the ridge is wide enough to accommodate an implant with a suitable diameter. Furthermore, delayed healing of bone marrow frequently postpones the implant placement indefinitely. Two healthy males with missing tooth #47 are presented in this report. The reasons for tooth extraction were periodontal– endodontic combined lesion for both cases. Cases 1 and 2 received first-time IM surgery at 19 and 6.5 months after tooth extraction, respectively. After flap elevation, residual undermined bone cavities with a depth of 14 and 9 mm in the marrow space were detected by 3.8- and 2.8-mm guide post, respectively. IM insertion was aborted due to the lack of primary stability. Nevertheless, successful IM placement was achieved at 38 and 16.5 months post-extraction, respectively; small holes and shallow defects persisted at the ridge top in both the cases.