Mean peri-implant marginal bone loss after 1 year was -0.1200.230 mm ( 95 % CI -0.35 , 0.10 ) for immediate , -0.3900.840 mm ( 95 % CI -1.23 , 0.45 ) for early and -0.2010.306 mm ( 95 % CI -0.51 ; 0.11 ) for conventionally loaded implants .