Table 4. Marginal bone level changes at 6 (final restoration), 12, 24, and 36 months after provisional abutment connection.

Variable			Time (month)
			6	12	24	36
No. of implants			26	27	19	22
	Bone loss (mm)
		0–0.5	23	24	16	18
		0.5–1	0	0	0	0
		1–2	0	1	1	0
		2–3	1	0	0	1
	Bone gain (mm)		2	2	2	3

Bone levels at provisional abutment connection were used as the baseline values.