Respected sir
I have gone through your query. As you have stated when there is no teeth sensitivity you need not use Thermoseal toothpaste. Warm water with salt can be used for gargling at anytime of the day. I advice you to stick on to one brand of mouthwash as per your convenience.
Next Steps
To maintain proper oral hygiene brush twice daily and rinse your mouth everytime with water after having food.
Health Tips
If you are using mouthwash see to it that you rinse your teeth properly after having food. It should be used only after 30 minutes after brushing. Remnants of food particles on teeth will lead to stain formation in long term while using mouthwash.