1. Clean the Tooth Surface: Clean the tooth surface and pits/fissures using a dental handpiece and dry thoroughly. Attach a small brush to a low-speed handpiece to thoroughly clean the pit and fissure areas to be sealed, then rinse thoroughly with a water spray gun. After cleaning, isolate the tooth surface with cotton balls to keep it dry.

2. Acid Etching: Apply acid etchant to the pit and fissure gaps, etch for 20-60 seconds. Thoroughly rinse and dry, ensuring no residual etchant remains. Rinse thoroughly and dry, ensuring no etchant residue remains. It is recommended to use a phosphoric acid gel with a concentration of at least 35%. Etching time for permanent teeth is generally 20–30 seconds, and for primary teeth, 60 seconds. Avoid wiping the etched tooth surface during the etching process, as this may damage the etched enamel and reduce bonding strength.

3. Application: Unscrew the sealing cap of the pit and fissure sealant, attach the dental irrigation needle or dental delivery tip, gently push the plunger of the delivery device, and directly apply the Light Cure Pit & Fissure Sealant to the pit and fissure. During application, ensure air bubbles are expelled, and the sealant coverage should be slightly smaller than the etched area, with sufficient thickness to avoid interfering with occlusion. Occasionally, the sealant may be slightly elevated, but it will typically wear down within 2–3 days. If the coating is too thin, it may lack sufficient compressive strength and be prone to fracturing under chewing forces.

4. Curing: After application, irradiate the sealant with a light-curing machine (lamp) for 20–40 seconds. The light-curing machine’s wavelength should cover 420–480 nm, with an irradiance (light intensity) of at least 1000 mW/cm². For larger areas, perform curing in sections. Once cured, the sealant no longer flows, forming a thin, hard, milky-white film on the tooth surface that is easy to observe.

5. Inspection: After curing, conduct a thorough inspection using a probe. Check the degree of curing, bonding condition, and presence of air bubbles. Identify any missed or unsealed pits and fissures and reseal as needed. Observe for excess sealant and determine if removal is necessary; address any issues promptly. Check the occlusion relationship and, if the sealant is too thick, adjust by grinding.