Immediate nonfunctional loading of implants placed simultaneously using computer-guided flapless maxillary crestal...

Area of Science:

• Oral and Maxillofacial Surgery
• Dental Implantology
• Regenerative Dentistry

Background:

• Immediate loading protocols show promise for various forms of edentulism.
• Limited research exists on bone morphogenetic protein-2 (BMP-2) effects on early bone healing and implant stability, particularly in severely atrophic maxillae.

Purpose of the Study:

• To assess the impact of immediate non-functional implants and BMP-2-loaded Bio-Oss collagen on bone formation and implant stability.
• The study focuses on early healing stages in patients with severely atrophic posterior maxillae using a crestal approach.

Main Methods:

• Thirty-three patients with 1-3 mm residual posterior maxillary bone height underwent flapless crestal sinus augmentation with BMP-2-loaded Bio-Oss collagen.
• Implants were immediately non-functionally loaded post-surgery.
• Bone height, density, implant stability (Periotest), and marginal bone loss were evaluated using CBCT and clinical parameters over 37.3 months.

Main Results:

• Achieved a 100% implant survival rate with healthy peri-implant gingiva.
• Demonstrated radiographic bone formation in sinus grafts and high bone density.
• Showed good implant stability and minimal marginal bone loss after 37.3 months.

Conclusions:

• The described technique is effective for posterior maxillary reconstruction with poor bone quantity.
• Simultaneous use of BMP-2 loaded graft material and immediate non-functional implant loading is a viable option.