The clinical trial aims to compare children's oral health-related quality of life (OHrQL) following caries arrest technique using SDF versus conventional drill and fill in the children with ECC

Early childhood caries (ECC) has been an increasing issue in many countries and has become a significant health problem, especially in socially disadvantaged populations. ECC is a specific form of caries that occurs in children with primary teeth. ECC is characterized as "the early onset of caries in young children with often fast progression which can finally result in complete destruction of the primary dentition".

Management of cavitated carious lesions in primary teeth in very young children is time-consuming due to their lack of cooperation, so one of the alternative procedures could be performed with silver diamine fluoride (SDF), to its effectiveness in arresting the activity of carious lesions (cavitated and non-cavitated). It is easy to apply even outside dental offices, and relatively inexpensive solutions can be used particularly when compared to restorative intervention.

Inclusion Criteria:

• Children Aged 3 to 5 years, in good general health and medically within normal.
• The parents provided written informed consent.
• Carious vital primary molars with reversible pulpitis.
• Restorable teeth.
• Normal Radiographic findings.

Exclusion Criteria:

• Unable to attend follow-up visits.
• Refusal of participation.
• Previously accessed teeth.