The separation of dental and medical care is a medical ethics issue because it negatively impacts vulnerable populations who lack access to dental care.
AMA J Ethics. 2016;18(9):861-868. doi:
10.1001/journalofethics.2016.18.9.peer1-1609.
One of the many doors money and power often open gives access to opioids where they would otherwise be withheld without strict oversight and management. Elvis Presley provides perhaps the most famous example of unmanaged access to drugs.