Hello, There are many causes for tinnitus. In your case the high BP may be one of the reasons and due to infection as the blood circulation near the ear increases the tinnitus also might have increased. Please get treatment for tooth infection, whether medications or extraction. This might reduce the symptoms.
Next Steps
Get treatment for tooth and then if tinnitus persists, consult ENT specialist online or locally
Health Tips
Till you consult:
1. Warm salt water gargles after every meals
2. Steam inhalation at night
3. Goon pain killer