Is it effective and cost-effective to seal dental caries instead of "drilling and filling"?

INTERVENTION: Intervention group: cleaning occlusal surface with rotating brush pumice, isolation of tooth (rubberdam), placement of resin‐based sealant after etching Control group (care as usual) local anesthetic, isolation (rubberdam), preparation / excavation with rotating instruments, restoration with composite resin or compomer restoration material. CONDITION: Dental caries, Caries ; ; PRIMARY OUTCOME: ‐ first‐attempt success rate; SECONDARY OUTCOME: ‐ caries progression after two years ; ; ‐ cost‐effectiveness from both a medical and societal perspective ; ; ‐ differences in QALYs (CHU‐9D) ; ; ‐ differences in dental fear (CFFS‐DS) ; INCLUSION CRITERIA: Age 3‐18 years Caries lesions in occlusal surface Lesion stage ICDAS 3 and 4