When calculus falls out and leaves a hole, it usually won’t recover. This situation may be a carious cavity or a gap between teeth, which can be treated with filling therapy or root canal therapy if necessary. 1. The hole after calculus falls out may be a cavity on the root surface or neck of the tooth. If the cavity has not yet affected the nerve of the tooth, it can be filled after removing the decayed material, and if the inflammation has already invaded the nerve of the tooth, root canal treatment will be needed. 2. When the calculus falls out, it may also make the existing gaps and uneven surface of the teeth show up, which looks and feels like pits or holes. This usually has no effect on the mouth and requires no special treatment, but scaling should be done to remove the calculus inside the mouth to help with oral health. If you have fallen out of the calculus leaving a hole, you need to go to the hospital as soon as possible, the doctor according to the specific conditions, to formulate individualized diagnosis and treatment plan, so as not to delay the condition.