Modified Osteotome Sinus Floor Elevation Technique for Multiple Edentulous Spaces: A Non-Randomized Controlled Trial.

Area of Science:

• Dentistry
• Oral Surgery
• Regenerative Medicine

Background:

• Maxillary posterior edentulous spaces often present with insufficient residual bone height (RBH) for dental implant placement.
• Traditional sinus floor elevation techniques can be challenging in cases with RBH < 5 mm.

Purpose of the Study:

• To demonstrate a modified osteotome sinus floor elevation (OSFE) technique for placing adjacent implants in patients with RBH < 5 mm.
• To evaluate the clinical efficacy and long-term prognosis of this modified OSFE technique.

Main Methods:

• A modified OSFE technique using specialized curettes for membrane release and an osteotome for elevation was employed.
• Dental implants were placed in 18 patients with RBH < 5 mm and 12 patients with RBH ≥ 5 mm.
• Cone-Beam Computed Tomography (CBCT) was used for pre- and post-operative assessment at 6 months.

Main Results:

• The modified OSFE technique achieved a 100% implant survival rate in all patients.
• The bone graft height between implants stabilized at 8.92 mm after 6 months, with no significant difference in resorption compared to patients with RBH ≥ 5 mm.
• The technique minimized membrane perforation risk and complications.

Conclusions:

• The modified OSFE technique provides predictable clinical outcomes for adjacent implant placement in maxillary posterior areas with limited bone height (RBH < 5 mm).
• This method offers advantages such as reduced trauma, shorter treatment times, and improved bone regeneration, making it suitable for various patient groups, including the elderly.