Histologic and Histomorphometric Comparison between Sintered Nanohydroxyapatite and Anorganic Bovine Xenograft in Maxillary Sinus Grafting: A Split-Mouth Randomized Controlled Clinical Trial

Table 1

Patient characteristics at baseline.

Males	18 (64.3%)
Females	10 (35.7%)
Mean age (range)	60.1 (39–79)
Nonsmoker	18 (64.3%)
Light smoker (<10)	6 (21.4%)
Heavy smoker (≥10)	4 (14.3%)
Mean residual bone (SD) (range) (mm)	2.0 (0.7) (0.5–3)