Table 4. NBFA ratios (%) for different surface treatments at two weeks and four weeks.

RBM: Resorbable blast media; HA: Hydroxyapatite; SLA: Sandblasting combined acid etching; NBFA: New bone formation area

Surface treatment	RBM	HA	Hydrothermal-treated HA	SLA	P value
2 week	58.6 ±12.5	64.6 ±23.7	62.6 ±13.8	52.4 ±29.9	0.001
4 week	63.6 ±5.4	75.1 ±16.2	71.4±13.7	66.4±13.6