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The study of xerostomia using basal and pilocarpine SSF is simple to perform, acceptable to patients and needs no special equipment. We describe a significant increase in SSF using a solution of 5% pilocarpine in comparison with salivary flow obtained after stimulation with ANTT. Twenty-two of the 46 patients with low BSF had stimulated flows over 1.5 ml. These 'responder' patients showed a shorter duration of sicca symptoms, a lower frequency of positive immunological markers and milder grades of scintigraphic patterns and lymphocytic infiltrates in salivary gland biopsies. This subset of patients probably maintain a residual capacity of their salivary glands, as opposed to the 'non-responder' patients, who had a longer duration of sicca syndrome evolution with more severe involvement of the salivary glands.

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