Persistent drooling: treatment by bilateral submandibular duct transposition and simultaneous sublingual gland excision.

Persistent drooling in a neurologically impaired patient is often multifactorial and various treatment modalities have been employed to overcome this distressing condition. This study analysed the outcome after bilateral submandibular duct transposition and simultaneous sublingual gland excision in 20 patients with persistent drooling treated between January 1989 and July 1994. Twelve were male and eight were female and were aged 5 years to 40 years. The outcome was considered much better/excellent in 11 cases (55%), better/good in eight cases (40%), no significant improvement in one case (5%) and none were considered worse after the procedure, in the 'early' postoperative period. Long-term results, judged by an 18-point questionnaire sent to the carers after an average duration of 3.2 years post-operatively, were available for 19 patients. In all, 16 carers (84%) felt the drooling had significantly reduced, and three carers (16%) felt that there was no improvement. The three patients who were considered not to have improved were all found to have made a 'good' improvement in the early post-operative period. The morbidity associated with the procedure was of a mild and transient nature and there was a complete absence of ranula formation in our series. The procedure was well accepted by the carers, who were also willing to recommend the procedure to others with a similar problem.