I have type 3 and trying Crest that has cetylpyridinium choride 0.1% which may cause brown stains in between the teeth OR Chlorhexdinie Gluconate 0.2% which can stain teeth if drink anytyhing with tannin (tea) within an hour of use.
Have you ever heard of oil pulling? I would highly recommend it. I do it daily with coconut oil and have no problems with my gums receding or bleeding anymore. I know that isn't what you asked, but as someone who's had problems with gingivitis and bad/sensitive gums/teeth I thought I would offer it up as a possible something to add to this line of treatment. It has done wonders for me and is a part of my daily routine I won't skip now.
1. Brush your teeth twice daily with fluoride toothpaste. 2. Floss once daily 3. Visit your dentist for professional cleaning. Dental calculus that causes periodontal disease, cant be removed by tooth brush or mouthwash.