Fig. 4

(a) Score B of marginal discoloration of Zenit in tooth #36 after a 48-month follow-up period, (b) Score B of marginal discoloration of Neo spectra in tooth #46 after a 48-month follow-up period.
(a) Score B of marginal discoloration of Zenit in tooth #36 after a 48-month follow-up period, (b) Score B of marginal discoloration of Neo spectra in tooth #46 after a 48-month follow-up period.