hello and welcome,
since you cannot sense any taste,your papillae on tongue are inactivated or depapillated.
it can be reaction of novacaine or antibiotic you had.
certain drugs can cause metallic taste
there may be chance of aphthou ulcers also.
take vitamin becosules and coticosteroids.
have you got your wisdom tooth erupted or is it still impacted?this can cause throat infection
and metallic taste in mouth.
check the flap covering wisdom tooth whether it is inflammed or not/if there is inflammation called pericoronitis
get it extracted or get the flap incised to enhance tooth eruption