Welcome to health care magic forum.
Thanks for sharing your concern.
Clenching of teeth usually caused due to the habit of bruxism or malaligned teeth.
Habit breaking appliances as well as orthodontic appliances has to be used to correct this.Metallic taste
as well as yellowish flap may occur due to inflammed flap overlying impacted tooth
In such cases,amoxycillin along with analgesics has to be administered.
Maintain oral hygiene
Get a thorough check up with a dentist