What is end stage dental disease in dogs is not directly stated in the article, however, the article does describe the advanced stages of periodontal disease.
In the advanced stages of gum diseases, your pup may be in significant chronic pain, which our pets hide out of instinct to avoid showing signs of weakness to predators.
The effects of periodontal disease don’t remain confined to your dog’s mouth - they can also lead to problems with major organs and cause heart disease when bacteria from the mouth enter the bloodstream, then attach to arteries surrounding the heart.
Usually, you won’t see any obvious signs or symptoms of this silent disease until it reaches its advanced stages, but gum disease can cause gum erosion, chronic pain, tooth loss and bone loss.
In the fourth stage, you’ll see gum tissue recede, and loss of 50% of the attachment between teeth and gums.
Tooth roots can become exposed.
Supporting structures of teeth can be weakened or lost.
Symptoms of canine periodontitis include: Discolored teeth, Bad breath, Inflamed or bleeding gums, Loose or missing teeth, Excessive drooling, Blood on chew toys or in water bowl, Favoring one side of the mouth when chewing, Irritability, Weight loss, Reduced appetite, Problems keeping food in mouth, “Ropey” or bloody saliva.