Clove soothes the nerves to stop the pain from a cavity but it doesn’t heal the cavity. It just stopped hurting enough for the nerve to eventually die. However rotting nerve tissue is still there and will eventually turn into a localized infection which your healthy body can contain but cannot remove on its own. If your body is weakened it could cause the infection to flare up. Chronically having diseased tissue in the body will take a toll on the body defense systems. Best to remove the dead tissue