Maxillary sinus floor elevation using hydroxyapatite nano particles vs tenting technique with simultaneous implant...

Area of Science:

• Oral and Maxillofacial Surgery
• Regenerative Dentistry
• Biomaterials Science

Background:

• Maxillary sinus floor elevation is crucial for dental implant placement in atrophic posterior maxilla.
• Graftless tenting and bone substitutes are common augmentation methods.
• Evaluating novel biomaterials like hydroxyapatite nanoparticles is essential.

Purpose of the Study:

• To compare bone height gain, density, and implant stability after maxillary sinus floor elevation.
• To evaluate the efficacy of hydroxyapatite nanoparticles versus the graftless tenting technique.
• To assess outcomes with simultaneous implant placement.

Main Methods:

• 20 sinuses with 4-6 mm residual bone height were divided into two groups.
• Group 1: Sinus augmentation with nano hydroxyapatite bone substitute.
• Group 2: Graftless tenting technique with simultaneous implant placement.
• Computed tomography (CT) scans and Implant Stability Quotient (ISQ) measurements were used.

Main Results:

• Nano hydroxyapatite group showed significantly greater bone height gain (7.0 ± 0.8 mm) vs. tenting group (5.0 ± 1.5 mm).
• Bone density was significantly higher in the nano hydroxyapatite group (548 ± 25 HU) vs. tenting group (420 ± 23 HU).
• Implant stability (ISQ values) was comparable between groups after 6 months (78 ± 5 vs. 77 ± 5).

Conclusions:

• Nano hydroxyapatite bone graft resulted in superior bone height gain and density compared to the graftless tenting technique.
• Both augmentation techniques demonstrated acceptable implant stability.
• Hydroxyapatite nanoparticles show promise for maxillary sinus augmentation.