Welcome to Health Care Magic.
Thanks for your query,
Root canal treatment
and crown over the tooth is the treatment.
Avoid very hot and very chilled food.
Avoid non-veg for few days.
Brush your teeth twice daily.
For sensitive teeth and decay ,apply Colgate Gel Cam(USA) with finger or a cotton bud all over the teeth,do not rinse with water till half an hour.You can just spit if you want.Follow the instructions written on the box.Continue this treatment for a month or two.
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