Hong Kong Med J 2025;31(Suppl 3):S27-9
Glass ionomer sealant versus fluoride varnish in preventing occlusal caries among preschool children: a randomised controlled trial (abridged secondary publication)
CKY Yiu1, ECM Lo2, GHM Lee1
1 Paediatric Dentistry, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
2 Dental Public Health, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
 
 
  1. Both the quarterly application of sodium fluoride varnish and a single placement of glass ionomer sealant were equally effective in preventing occlusal caries in primary second molars over 24 months.
  2. Placement of glass ionomer sealant was more cost-effective in preventing occlusal caries within 24 months.
  3. Caries experience and incipient occlusal lesions increased the likelihood of caries progression into dentine in primary second molars.