Systemic sclerosis is a rare multisystem connective-tissue disorder characterized by three major pathological hallmarks: widespread fibrosis, vasculopathy and immunological abnormalities. This condition has multiple effects on the orofacial region that is involved in approximately 80% of the patients with a significant impact on the quality of life. The aim of this randomized single-blind study is to evaluate the impact of the use of a specific oral hygiene instrumentation (sonic toothbrush and water flosser with a large handle) compared to standard toothbrushing with a manual toothbrush on the gingival health among patients with systemic sclerosis.