Specification: Type: Light curing composite resin Shade: A1, A2, A3 Net weight: 2.5g Color: As shown in picture Package includes: 1PC A1/A2/A3 Features: 1. Low polymerization shrinkage 2. High strength and polishability 3. Similar modulus of elasticity to dentin 4. Radiopaque and fluoride-releasing; optimal polishability and high shade stability 5. Easy to mold 6. Easy to adhere to bracket for orthodontics 7. Simple and convenient to use 8. Suitable for all types of cavity preparations Usage: 1. Prepare cavities according to standard procedures, remove decayed tissue, and clean the cavity. 2. Apply a dental etchant to the tooth surface to be bonded, rinse thoroughly, and dry the bonding surface. 3. Apply a thin, uniform layer of dental adhesive to the bonding surface and cure with a dental light-curing unit for 20 seconds. 4. After filling and shaping with an appropriate amount of composite resin, cure using a light source with intensity not less than 400mW/cm² for 20 seconds. Curing depth is 1.5mm. For deeper fillings, extend irradiation time or perform incremental layering. 5. Perform trimming and polishing. Use dental articulating paper to check occlusion before final adjustments. It is recommended to use rubber polishing points and ultra-fine abrasive polishing strips. 6. Recommended use of pulp protection materials such as calcium hydroxide (light-cured or chemical-cured) or other non-eugenol-containing liners. Avoid direct use of eugenol-containing materials as a base.