Recent studies have reported the successful use of guided tissue regenertion procedures with nonresorbable barrier membranes to treat buccal recession in humans. Nonresorbable membranes, however, require a reentry procedure for removal, disturbing the delicate healing process. Resorbable membranes were used in a guided tissue regenertion procedure in nine patients with one site of buccal recession each. The resorbable barrier yielded satisfactory clincal results, providing significant gains in probing attachment and root coverage. However, both the surgical technique and the design of the barrier used require improvement for applicaton at sites of buccal recession.