Immediate implant placement with simultaneous bone augmentation using guided bone regeneration in the anterior maxillary aesthetic zone: A retrospective study

Abstract

Objectives The aim of the present study was to retrospectively evaluate the effect of membrane guided bone regeneration (MGBR) among two groups which underwent dental implant placement with and without MGBR. Effects of vertical bone augmentation were analysed and compared, with particular attention to the health of the corresponding peri-implant hard and soft tissues. Materials and Methods In this retrospective clinical study, 57 dental implants were consecutively placed in 50 patients with deficient ridges requiring vertical bone augmentation, divided into two group (Implant placement with and without MGBR). Both the groups were evaluated retrospectively after a period of functional loading varying from 12 to 29 months. Results All 57 implants were stable, with adequate secondary stability and osseointegration. In group A, The mean probing depth was 2.5 mm ranging from 1 to 4 mm (SD½ 1.34), in Group B the mean probing depth was 2.34 mm ranging from 1 to 4 mm (SD½1.17). The difference in probing depth were statistically non-significant (p>0.005).A comparison of the crestal bone level(CBL) values between group A (1.17mm) and group B (1.64mm) revealed statistically significant difference at 12 month follow-up (p<0.005). Summary and Conclusions Within the limitations of the study, our results are in favour of suggesting that vertically regenerated bone with GBR techniques responds to implant placement like native, non-regenerated bone. Key Words Dental implant; Guided bone regeneration; crestal bone level.