Table 2. Peri-implantitis categorical scores.

	ULCUS EPIT	MUCOUS INFILT	COLAGEN DESESTRUC	INTRABON POCKET	VASCULAR PROLIFERATION
(GROUP A) UNCOAT	18	20	20	12	20
(GROUP B) COAT	30	38	38	19	38
SIGNIFχ2	0.250	CTE.	CTE.	0.328	CTE.

Note that infiltration mucosae, collagen disruption and vascular proliferation are present in all the samples in both groups. Group A: n = 20. Group B: n = 38.