Early implant loading after vertical ridge augmentation (VRA) using e-PTFE titanium-reinforced membrane and nano-structured hydroxyapatite: 2-year prospective study.

摘要: Conflict of interest self-supported study, no conflict to declare Aims This 2-year prospective multi-centre study aimed evaluate the survival implants loaded 14 weeks after vertical ridge augmentation (VRA). Materials and methods Twenty consecutive patients scheduled for VRA around were selected this in three private centres. Nano-structured Mg-enriched hydroxyapatite (Mg-e HAP) was used as only filler material. It covered with a titanium reinforced extended polytetrafluoroethylene (e-PTFE) membrane (Gore-Tex). A total 42 rough-surface inserted same surgical session. Healing abutments 2 mm long instead cover screws optimise aesthetics. All underwent second surgery 3 months. Thereafter, definitive restorations seated within using platform-switching concept. Outcome measures amount bone gain, prosthesis implant success, complications radiographic marginal level changes assessed at 12 24 months prosthetic loading. Frequency resonance analysis expressed ISQ (implant stability quotient) values performed insertion (T0), when restoration (T1) loading (T2). Results At end patient dropped out, all clinically stable failed. Initial clinical evaluations showed an average defect height 4.1 mm. Only one late exposure registered. Complete filling regeneration volume obtained 19 out 20 cases. The mean gain 5.6 Radiographic assessments inter-implant regenerated levels presented value 1.0 (SD 0.48 mm), compared 12-month follow-up. statistically significant loss peri-implant occurred over time. Mean 0.3 time loading, 0.90 1 year 0.98 years. significantly increased placement 49.3, delivery final it 63.9 years 73.6. Conclusion suggests that e-PTFE nano-structured Mg-e HAP can be successful even cases early