Silver Diamine Fluoride in Preventing Occlusal Caries in Primary Teeth
- Conditions
- Dental Caries in Children
- Interventions
- Registration Number
- NCT05084001
- Lead Sponsor
- The University of Hong Kong
- Brief Summary
In Hong Kong, approximately half of the kindergarten children have dental caries (tooth decay) and the majority (\>90%) of the decayed teeth were left untreated. There is a need to generate clinical evidence for designing an effective dental caries prevention programme for preschool children in Hong Kong. The objective of this study is to compare the effectiveness of 38% silver diamine fluoride (SDF), 5% sodium fluoride (NaF) varnish and placebo control in preventing dentine cavitated caries in primary molars in preschool children when applied semi-annually over 30 months. Around 770 preschool children attending Grade 1 in selected kindergartens will be invited to participate in this clinical trial. Only generally healthy children with written parental consent will be included. At baseline, clinical examination will be conducted in the kindergarten to assess the tooth and oral hygiene status of the included children. After the baseline examination, the children will be randomly assigned to one of the following three study groups and the occlusal (biting) surfaces of their primary molars will receive the corresponding interventions: Group A - semi-annual topical application of 38% SDF; Group B - semi-annual application of 5% NaF varnish; and Group C - semi-annual application of placebo control with tonic water. Clinical examination of the study teeth in the children will be conducted every 6 months after the baseline to assess the outcome of the intervention. The primary outcome is whether cavitated dentine caries lesion is found in the treated occlusal tooth surface. The null hypothesis tested is that there is no difference in the effectiveness of semi-annual application of 38% SDF and that of 5% NaF varnish versus placebo control in preventing dentin occlusal caries in primary molars of preschool children. The results of the proposed study will provide evidence to strengthen or refute the recommendation regarding the use of SDF for preventing occlusal caries in primary molars. The study findings will be valuable for guiding decision-making among dental practitioners and health policymakers on whether SDF should be complemented in a school-based caries prevention program.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 769
- be healthy
- have at least one caries-free (no cavitation) primary molar
- are uncooperative or refuse examination
- have major systemic disease
- present with either acute pain or infections or have gingival ulceration or stomatitis
- have known sensitivity to fluoride, silver or other heavy-metal ions
- are currently involved in any other research that may impact on the present study
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description 38% SDF (Saforide, Toyo Seiyaku Kasei Co. Ltd., Japan) silver diamine fluoride application of silver diamine fluoride solution on occlusal surface of primary molars 5% NaF varnish (Duraphat, Colgate Palmolive, USA) sodium fluoride varnish application of sodium fluoride varnish on occlusal surface of primary molars Tonic water tonic water application of tonic water on occlusal surface of primary molars
- Primary Outcome Measures
Name Time Method dental caries increment in dmfs index 30 months development of decay into dentine to form cavity
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
The University of Hong Kong
🇨🇳Hong Kong, China