Table 3.

Progression of relative percentage of extrusion (RPE) and shrinkage

	3 months	12 months	P
RPEa	40.3 ± 4.6	41.7 ± 5.4	0.487
RPEp	− 27.7 ± 6.1	− 21.2 ± 5.6	0.166
RPEr	43.6 ± 3.1	42.0 ± 3.7	0.728
Shrinkage	172.0 ± 8.2	180.6 ± 11.5	0.150

Values are expressed as mean ± SD unless otherwise indicated