For bad breath please get scaling and polishing done regularly. For sensitivity, it depends on the cause of sensitivity. Sometimes cavities can cause sensitivity in which case fillings are required. Sometimes hard brushing can wear off enamel causing sensitivity so a ceramic filling can be done. Gum recession can also cause sensitivity.Treatment depends on the cause. Consult a dentist for proper diagnosis

Do u have acidity problem? For bad breathe- regular cleaning!

Visit a dentist! Probably scaling for bad breath And sensitivity need to be examined the reasons behind it!

Instantly refer a dentist go for scaling if required moreover use shynm toothpaste