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Table 3 Level of crown margin at the different time points

From: A novel non-surgical method for mild peri-implantitis- a multicenter consecutive case series

  Baseline
n = 306
2 weeks
n = 272
4 weeks
n = 267
12 weeks
n = 282
24 weeks
n = 294
P
Subgingival crown margins 283 (92.5%) 224 (82.4%) 224 (83.9%) 239 (84.8%) 248 (84,4%)  
Supragingival crown margins 23 (7.5%) 48(17.6%) 43 (16.1%) 43 (15.2%) 46 (15.6%)  
Baseline to 2 weeks       <0.001
Baseline to 4 weeks       0.024
Baseline to 12 weeks       0.003
Baseline to 24 weeks       0.002
4 to 12 weeks       0.668
12 to 24 weeks       0.895