表 3.

穿龈角度和戴牙后1年时的颊侧黏膜退缩

Emergence angle (EA) and buccal mucosal margin change (ΔGM) over one year

Items		EA/(°)，x±s	ΔGM/mm, x±s
* Significant difference between the control and the test group (A1 vs. A2). # Significant difference between the control and the test group (A1+B1 vs. A2+B2). Group A, mucosal thickness ≥2 mm; Group B, mucosal thickness < 2 mm; Groups A1 and B1, control group with healing abutment emergence profile; Groups A2 and B2, test group with altered emergence profile.
Group A	Group A1	44.03±11.50*	0.63±0.38*
	Group A2	31.06±9.78*	0.13±0.32*
Group B	Group B1	34.44±12.18	0.45±0.50
	Group B2	37.83±11.16	0.17±0.37
Control group	Groups A1 and B1	39.46±12.82	0.54±0.45#
Test group	Groups A2 and B2	34.63±11.13	0.15±0.34