This is where good teeth come to die. 

The photos here show the extreme conditions that can occur when dental care is ignored.  At this stage, infection is rampant, severe gum & bone loss has occurred causing multiple mobile teeth. The breath stinks of infection, the pet is in distress & its health has been jeopardized.
These “science projects” require extensive reparative intervention, preferably performed by a veterinary dental specialist. X-rays are required to determine which teeth are salvageable. Post-surgical supportive care includes frequent follow-up cleanings & absolute adherence to a home care program.

This extensive diseased condition can develop in any dog or cat but usually occurs in older pets & is more prevalent in smaller dogs than in larger ones.  While anesthetic dental procedures are the recommended treatment, these pets are frequently poor candidates for anesthesia due to their age or compromised health.  This presents a dilemma for the veterinarian, dental technician & pet owner who must weigh the benefits of dental surgery against the anesthetic risks for an elderly or health compromised pet.