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Results of the clinical evaluation of marginal adaptation criterion
| 6 m | 12m | 18 m | 24 m | |||
|---|---|---|---|---|---|---|
| The control group | a | 55(100%) | 54(100%) | 54(100%) | 54(100%) | |
| b | 0 | 0 | 0 | 0 | ||
| The experimental group | a | 60(98%) | 55（98%） | 55(98%) | 55(98%) | |
| b | 1(2%) | 1（2%） | 1(2%) | 1(2%) | ||
| Fisher’s exact p-value | 1 | 1 | 1 | 1 | ||
