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Hello. Thanks for the question.
Paw pads will typically heal similar to a nail issue. It will take a good 3-4 weeks before the new pad grows and the damaged sections are replaced.
To help them heal faster, I like to use SSD (silver sulfadiazine) ointment. You can get it from a vet or from a human pharmacy. I will also typically put them on some Cephalexin (antibiotic) to help with any secondary infections on the pads. I also prefer to have them open as much as possible. They heal up better open than if they are wrapped.
I hope this helps, let me know if you have any other questions.