Inclusion Criteria: • Age: 4-6 years old age.  Both genders. Decayed vital primary molars (asymptomatic teeth with active single-surface lesions, vital pulp no signs of irreversible pulpitis) .  Exclusion Criteria:  History of systemic conditions. Allergy to silver. Oral ulceration. Teeth with proximal or multi-surfaces caries, pulp pathology.