The oral microbiome is a periodontal disease.
The dental calculations are an important advance from the past because they have the ability to give important information about the health and nutrition of our ancestors, and at the same time, their lifestyle. The periodontal disease is caused by the same bacteria that in the past, independently of the hygiene and human diet. The old oral microbiome already had genetical machanisms for the resistence to antibiotics.
Unlike the bones that lose a big part of their molecular information when they are sculpted, the dental calculation comes into a state of much more information, which helps to preserve the biomolecules.