The aim of this study was to compare microleakage of resin-based
sealant Helioseal F with or without bonding agent. Fifty-six sound
human maxillary first premolar teeth were collected which were
extracted for orthodontic purpose, then the teeth we
re randomly divided
into two main equal groups; group (1) and group (2), the first group was
treated with Tetric N Bond bonding agent, whiles the second group
without.
