A commonly observed problem with dental sealants
that leads to early failure is that the practitioner (dentist or hygienist) has applied the material too thick- sealants generally last more than 5 years if they are applied in the smallest amount possible to seal the grooves and pits in the enamel
. However, patients that chew ice or habitually eat really hard things (nuts, hard candies) can expect diminished longevity
out of their sealants.
-rk faber, dds