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Periodontal regeneration assessment score (PRAS) of the treatment groups 12 weeks after the implantation. (a): DG score; (b): CM score; (c): PDL score; (d): BA score; (e): The 4 scores of the treatment groups presented in a heat map, and compared with healthy control. (f): The total PRAS scores; (g): A summary of the PRAS total scores and the distribution of grades.
