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Changes in the appearance of a large (Nordland-Tarnow Class II) papillary defect after the Revident treatment (patient 13). (a) “Black triangles” at the baseline; (b) immediately after the injection; (c) at the one-week follow-up; (d) at the one-month follow-up. Large defects do not show clinically noticeable changes after a single administration of hyaluronic acid gel.
