How long does it take for the strips to fall off after thyroid surgery dr said they would dissolve?

Strips or sutures?: Steri-strips (nylon-reinforced adhesive strips) usually come loose in less than a week. Some suture material dissolves after time; others (on the skin) need to be removed (many incisions are now closed with staples, which are removed when the incision has healed sufficiently).

Not long: Typically there are subcutaneous, or hidden sutures (stitches) under the skin that dissolve and steri-stips or narrow pieces of sticky material placed over the incision. The sutures should be absorbed in 2-3 weeks and the steri strips will curl on the edges and fall off when not sticky any more. Those do not dissolve like the sutures do.