Some procedures use ordinary silk sutures to close the skin. Because ordinary silk sutures cannot be absorbed, the sutures need to be removed after the wound heals. In clinical practice, the skin of the head, face and neck is often sutured with absorbable threads for intradermal sutures, because the scars formed by intradermal sutures are smaller than those formed by interrupted sutures with ordinary silk threads. For some surgical incisions with high tension and long wounds, interrupted sutures with ordinary silk threads are used to close the wound skin. In addition, the price of ordinary silk thread is much cheaper than the price of absorbable thread.