My wife just had some recent dental work done, and now has an extremely
bitter taste in her mouth. The work done involved two resin-composite
fillings. Durring the procedure, the dental assistant squirted too
much
of the primer liquid into her mouth.

Exactly. Its called etchant but its 37% phosphoric acid! Acid is
bitter.

We believe that this is the source
of the bitter taste. Eventhough the fillings were removed and the the
teeth polished, the bitter taste is persistent. Do any dentist out
there have any experience with this problem? I have noticed several
other messages that point to resin-composite fillings and persistent
bitter taste.

YUP it will go away .......

Joely