A pulpotomy is when the inflamed pulp chamber, usually on a baby molar, is removed, the area is sterilized, and the chamber is sealed. It is sometimes called a baby tooth root canal, but it's not really a root canal and it can be done is some cases in permanent teeth.
Princess Royal is a style customarily (but not automatically) awarded by a British monarch to his or her eldest daughter. Holders retain the style for life, so a princess cannot receive the style during the lifetime of another Princess Royal. Queen Elizabeth II never held the title as her aunt, Princess Mary, was in possession of the title. There have been seven Princesses Royal. Princess Anne is the current Princess Royal.
In order to be officially called Princess Diana she would have had to have been born a princess of the royal blood herself. because Diana was The Princess of Wales, with Princess being promenint in the title, and everyone knew her name was Diana it was easier to just call her Princess Diana. When Kate married Prince William, who had been made Duke of Cambridge that same morning, she officially became HRH The Princess William, Duchess of Cambridge- and is technically a Princess, Kate gets to ...