Successful replantation of a bitten-off vermilion of the lower lip by microvascular anastomosis: case report.

A successful case of lower lip vermilion replantation is presented where there was lack of a suitable vein for drainage after arterial flow was re-established. The venous stasis was overcome by the "chemical leech," intra-replant subcutaneous heparin injection at intervals 9 days postoperatively. The result is excellent both aesthetically and functionally.