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Relative amino acid and phosphate content of matrix as a function of distance from the mineralization front. (A) Aspartic acid (Asp), serine (Ser), and threonine (Thr) relative content in dentin matrix. (B) Relative matrix phosphate content. The presence of an asterisk between groups indicates statistical significance (*, P < 0.05, **, P < 0.01). min. front, mineralization front.
