1 Plasma donors may donate as often as every 28 days. 2  Platelets donors may donate as frequently as every eight days, and up to 24 times in a 12-month period. 3  Double Red Cell donors maybe donate as often as every 168 days.
In some cases, perfectly straight teeth can become crooked with age, as the structure of your mouth changes, or due to tooth loss and movement of the remaining teeth. Teeth straightening can be achieved by a variety of different cosmetic dental techniques.
A tooth or periapical abscess occurs when the pulp inside the tooth is infected and happens when the toothâs nerve is dead or dying. The abscess appears at the tip of the toothâs root and can spread into the surrounding bone. Left untreated, what can start as a small cavity can progress to major tooth decay.