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. 2021 Feb 8;7:8. doi: 10.1186/s40729-021-00289-z

Fig. 2.

Fig. 2

Box plot of the radiographic peri-implant marginal bone level at different time points in millimeter. Baseline: the time of implant placement; abutment: the time of abutment operation; impression: the time of impression taking; follow-up: the time of the final follow-up