Preserving as much healthy tooth substance as possible when repairing minor carious defects is the most important objective in modern dental care. This is only possible if the instruments used permit a gentle mode of operation without causing discomfort to the patient. The 1SXM i such an instrument. The bur has a special cutting geometry which allows the user to work in the cavity with low vibrations and without stressing the patient. The slender neck permits a clearer view of the work area