Reasons Why a Dog Would Lose a Tooth

Dogs usually stop losing their teeth at about 7 months, when their puppy teeth are replaced by adult teeth. The adult teeth should last your dog for the rest of his life, but some dogs may lose teeth as result of trauma, such as a car accident. If that's not the case, your dog may be losing teeth because of dental disease or a medical disorder, the most common of which are explained below. It's important to take your dog to a vet if he's losing his teeth to reasons other than a traumatic injury.


Periodontal Disease

Periodontal disease is the No. 1 cause of tooth loss. It starts when plaque builds up your dog's teeth and works its way under the gums. There, the plaque secretes toxins and damages the gums and connective tissues that hold the teeth in place. If left untreated, periodontal disease will continue to damage the gums and tissues until teeth start to fall out.


Hyperparathyroidism is a metabolic disease that causes hyperactivity in the parathyroid glands, which are responsible for regulating calcium and phosphorus levels in the blood. The parathyroid glands help increase the calcium levels in the blood so it can be reabsorbed from bone. Secondary hyperparathyroidism is a type of hyperparathyroidism that causes a calcium and vitamin D deficiency, as well as chronic kidney disease. The disease can reduce the calcium from teeth and bones, which can cause the teeth to loosen and eventually fall out.

By Whitney Lowell

About the Author
Whitney Lowell has been writing online since 2007. She writes for a variety of online publications and across a wide range of topics and niches. She has experience with animal rescue, dog training, pet health and breeding reptiles.