ABSTRACT

Aim: The aim of this study was to evaluate the immediate implant placement versus delayed implant placement 3 months later of the splitting of thin alveolar bone sites using flapless crest splitting technique.

Subjects and Methods: This study was designed as a prospective clinical trial of 35 implants over 8 patients with 16 alveolar splitting sites. Eight sites were splitted and immediately implanted and submitted to group I, the another eight sites were splitted and implanted after 3 months they were submitted to group II, After alveolar ridge spiltting both groups were grafted via xenografts and covered with collagen membranes for guided bonr regeneration (GTR). For both groups we clinically assessed insertion torque, Implant stability quotient (ISQ) and radiographically horizontal bone gain and bone density at 3 intervals postoperatively, 3 and 6 months.

Results: The mean ISQ and insertion torque ± SD in group II was higher than group I. Group I showed a higher increase in bone gain than group II.

Conclusion: Immediate implantation after piezotome ridge splitting can be a useful procedure in ridges which have low bone quality and a thin cortex. Delayed implantation after piezotome ridge splitting is recommended when the initial stability of the implants is predicted to be poor. Both techniques using piezotome alveolar ridge splitting are effective in avoiding adjacent nerve injury.