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Table 5 Radiographic examination of BV (volumetric changes in graft bone over time)

From: Long-term radiographic assessment of maxillary sinus floor augmentation using beta-tricalcium phosphate: analysis by cone-beam computed tomography

BV Mean Reduction rate
Immediately after surgery (n = 30) 1206 ± 437 (477 to 2292) 100 %
6 months after surgery (n = 30) 912 ± 356 (428 to 1760) 75.6 %
2.5 years after surgery (n = 30) 662 ± 294 (204 to 1568) 54.9 %
  1. BV bone volume, n = 30: the number of maxillary sinuses
  2. Reduction rate: provided that volume was 100 % immediately after surgery
  3. Analysis using generalized estimating equations (GEE) with patient clusters