Treatment of Early Childhood Caries Using Silver Diammine Fluoride and Sodium Fluoride Tricalciumphosphate and the Effects on Oral Health Related Quality of Life

Inclusion criteria: Children will be invited to participate in the trial if they fulfil the entire selection criteria as described below: * 4 to 6 years-of-age * Identification of one or more carious primary molars without involvement of the pulp confirmed by bitewing radiographs * Up to three teeth per each participant will be selected for intervention * Has normal salivary flow rate * Does not consume medications regularly for any medical condition * Has not or will not receive any fluoride therapy or relevant dental therapy from other dental sources within the last six months Exclusion criteria: Children will be excluded from the trial if they fulfil any of the following criteria: * Presence of any pain, ulceration, fistula/sinus or an abscess * Premature hypermobility of carious teeth which can be potentially included in the study * History of allergy to any product containing silver compounds * Siblings of the participants will not be allowed to participate to ensure any chance of ECOHIS duplication.