I had a deep cleaning about a week ago and have been brushing and flossing much better. one of my bottom teeth is a little loose. what should i do?

Periodontal issues: A deep cleaning removes hardened food and bacteria(calculus) from the roots of your teeth. If you have had gum disease for awhile, you have most likely lost some bone support. Bone is what holds our teeth in. When the calculus is removed the teeth may seem mobile. As healing occurs the teeth may tighten up however, if too much bone is gone you may lose the affected teeth.

Do not clench: Try not to clench, grind or push on the tooth to see how loose it is. Talk to your dentist to see how loose it is compared to other teeth and what they recommend. A night guard worn at night might be helpful. Lower front teeth can be a little loose and still last a long time. The tartar or calculus on your teeth before the deep cleaning probably was holding the tooth in place.

Bone loss: Deep cleaning means you have gum/bone loss. Cleaning alone will not regrow the attachment/support you have lost. Bone loss = tooth mobility. This will not get better by itself. If I were you I would want this evaluated by a gum/bone specialist, a Periodontist...now.

Visit a periodontist: who is gum specialist and see if your situation makes you a candidate for bone grafting, preventing further bone loss and loose teeth.