Randomized controlled trial.
Forty-seven schoolchildren aged 9–10 years with fully sound/noncavitated erupted first permanent molars were included and randomly allocated in control and experimental groups in a split-mouth design.
47 schoolchildren (94 molars) fissure sealants applied using self-etch universal adhesive system.
47 schoolchildren (94 molars) fissure sealants applied using conventional acid-etching technique.
Retention of sealants and secondary caries incidence (ICDAS).
Conventional acid-etch sealants retention was superior to self-etch after 6 and 24 months (p < 0.001), but no differences were found in caries incidence after 6 and 24 months (p > 0.05).
Clinical retention of fissure sealants using conventional acid-etch technique is greater than self-etch.
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Pereira, T.S., Clementino, L.C., Freire-Maia, J. et al. Retention in fissure resin-based sealants in schoolchildren: the etching step importance. Evid Based Dent 24, 79–80 (2023). https://doi.org/10.1038/s41432-023-00894-4