It is normal to move the teeth.

Normally the teeth do not move. Only in special circumstances may occur some mobility considered normal and then disappears, as in orthodontic treatments. Periodontal disease is not the only cause of tooth mobility, but the most frequent. In this case it is a sign too late and reflects a situation where there is terminal with more complex treatments and therapeutic outcome worse. The mobility reflects that around the tooth has lost support or anchorage to the bone and jaw is all the greater, the more advanced the disease is.
Other circumstances that mobility increases are associated with the forces exerted on the teeth with an intensity and direction inadequate, but in these cases require a different treatment. Mobility is often persist despite treatment because the level of periodontal bone does not recover after treatment in most cases, it achieves is a cater indefinite maintenance of bone support. The teeth showing mobility at the time of diagnosis tend to get lost in the medium to long term despite treatment, and this is one reason that justifies the need to make a diagnosis and early treatment of periodontitis.