A Clinical Trial to Compare the Safety and Performance of Two Different Curing Modes in the Direct Filling Therapy in Deciduous Teeth

Inclusion Criteria: * Consent of a legal representative (usually parents) * 2 deciduous molars in the need of direct filling therapy class I and/or II in different quadrants (primary or secondary caries, filling loss) * Classification of caries: caries of all sizes in deciduous molars are included unless they can be treated with fissure sealing (ICDAS 3, 4, 5) * Sufficient language skills of legal representative and children * Teeth in the need of indirect pulp capping if necessary (Operator decision) Exclusion Criteria: * Cognitive impairment not age-appropriate * Sensitive tooth (pain at night, irritation-persistent pain, buccal swelling, percussion sensitivity) * Teeth with severely resorbed roots (anormal tooth mobility) * Direct pulp capping * Pulpotomy of an adjacent tooth in the same appointment * Noncompliant child * Allergies to material or anaesthetics used in the study * Sufficient isolation not possible