From: Long-term radiographic assessment of maxillary sinus floor augmentation using beta-tricalcium phosphate: analysis by cone-beam computed tomography
Observation period (months)
Number of patients
12–18
11
19–24
4
25–30
3
31–36
1
37–42
43–48
2
49–54
55–60
Mean 3 years and 8 months
Total: 30 patients