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Oral manifestations are a common feature of systemic sclerosis (scleroderma).

The aim of this study was to find the frequency, characteristics, and the severity of oral involvement in Iranian patients with scleroderma, seen in the Scleroderma Unit, Rheumatology Research Centre.

Cases were selected consecutively according to the American Colledge of Rheumatology criteria.

A complete oral examination was performed for all patients. Their data were compared with a control group by chi square test and fisher exact test.

Forty scleroderma (Scl) patients (31 limited scleroderma, 9 diffuse form) and 40 healthy subjects (age and sex matched) were evaluated.

The mean age in the Scl group was 40.83 (± 10.02 SD) and in the control group 40.30 (+ 10.43 SD) years.

The mean duration of the disease was 8.3 (± 8.94 SD) years.

The following sympotoms were seen more frequently in …