Due to its propensity to be absorbed following a graft, autogenous bone has generated controversy. Resorption rates ranging from 0% to 25% have been documented in numerous investigations. According to Cordaro et al., six months following transplantation, up to 42% were resorbed vertically. In line with earlier research, 97 implants had an average volume change of 30% one year after implantation, and after one and thirteen years, respectively, there was a gross 1 mm and 2 mm marginal bone loss. Up until the first year, there were no differences between the 1-stage and 2-stage procedures; however, six years after the graft, a significant difference in marginal bone loss was noted between the 1-stage and 2-stage procedures: 1.8±1.3 mm and 1.3±0.6 mm for the 1-stage and 2-stage procedures, respectively. At one year, the onlay and veneer-type block bone grafts revealed marginal bone loss of 0.8±1.1 mm and 0.9±0.7 mm, respectively, and ten years later, 2.1±1.1 mm and 1.3±0.6 mm, respectively. The majority of marginal bone loss happened in the first year, according to a 2007 study. Furthermore, according to the 2015 study, the development of peri-implant bone loss was linked to marginal bone loss (>2 mm at the first 18 months or above 0.44 mm annually), suggesting that it is a successful outcome.

An 88% 5-year cumulative survival rate of 129 implants, implanted on average 5.2±1.1 months following the ramal block bone transplant, was reported by Levin et al. in 2007. According to Schwartz-Arad et al. (2014), 633 implants that were placed on average of 4.5±2.6 months following the ramus block bone graft had an 83% 11.5-year cumulative survival rate. The 97 implants with a ramus block bone graft in this survey had cumulative survival rates of 95.8%, 93.8%, and 93.8% after implantation, respectively, despite the generally poor long-term implant survival rate with a block bone graft. After an average of 6.4 months following the iliac bone transplant, 23 implants with a 1-stage procedure showed an 82% survival rate, whereas 166 implants with a 2-stage procedure showed a 94.3% survival rate. At ten years following implantation, the overall survival rate of 189 implants with an iliac block bone graft was 92%, which was noticeably greater than in earlier studies where there was no distinction between the iliac block bone and the ramus.

Therefore, in cases of moderate to severe jaw atrophy or abnormalities, an autogenous block bone might be employed with reliability to improve the horizontal and vertical circumstances for implant implantation. According to certain research, the grafted autogenous bone's propensity to resorb would produce marginal bone loss of the implant; nonetheless, the low marginal bone loss and high survival rate led to a favorable long-term follow-up outcome in terms of the implant success criteria.