Retained deciduous teeth in dogs (Persistent deciduous teeth)
- Occurrence: common
- Location of disease: Head/Neck
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days
If the condition worsens / symptoms persist, consult a veterinarian.
Definition
Persistent deciduous teeth in dogs are a dental problem where a dog’s baby teeth do not fall out and get replaced by the permanent teeth as they normally should.
Das Wichtigste auf einen Blick
Persistent baby teeth in dogs are a condition in which the baby teeth do not fall out when the permanent teeth erupt. Normally, the baby teeth fall out between the fourth and seventh month of life, but genetic factors, hormonal imbalances, or developmental disorders can disrupt this process. Smaller dog breeds such as Yorkshire Terriers and Chihuahuas are particularly frequently affected. Symptoms often include the presence of double rows of teeth and malocclusion of the permanent teeth. Diagnosis is made through a dental examination and, if necessary, X-rays to assess the structure of the tooth roots.
Treatment usually consists of extraction of the persistent baby teeth by a veterinarian under general anesthesia to create space for the permanent teeth and prevent future complications. After extraction, careful oral hygiene is important to prevent infections. Orthodontic treatment may be necessary if malocclusion has already occurred. The prognosis is generally good if the teeth are removed early, which can prevent long-term problems.
Prevention includes regular veterinary check-ups as well as a balanced diet that supports teething. Research focuses on genetic and environmental factors that influence this condition. New imaging technologies and nutritional strategies could improve diagnosis and treatment in the future. Overall, research aims to promote dogs’ dental health and reduce the frequency of problems with persistent deciduous teeth.
Ursachen
Dogs initially have a set of baby teeth, consisting of 28 teeth, which erupt in the first few weeks after birth. These baby teeth are usually smaller and sharper than the permanent teeth. Between the fourth and seventh month of life, they are usually replaced by the permanent teeth, which total 42 teeth. The natural loss of the baby teeth occurs through the pressure of the permanent teeth on the roots of the baby teeth, causing them to be resorbed.
The process of tooth resorption is complex and is controlled by hormonal and physical changes in the dog’s jaw. A disruption in this process can result in one or more baby teeth not falling out. These persistent baby teeth can then compete with the permanent teeth for space in the jaw, which can lead to Malocclusion and further problems.
The causes of persistent baby teeth are often genetic. Certain dog breeds, especially smaller breeds such as Yorkshire Terriers, Chihuahuas, and Poodles, are more frequently affected. It is believed that genetic factors can influence the resorption of tooth roots and the timing of tooth replacement. Hormonal imbalances or developmental disorders in the dental or jaw area can also play a role.
Another reason can be trauma or an infection that disrupts the normal tooth replacement process. Poor nutrition or a deficiency in certain nutrients during the developmental phase can also contribute to the problem by impairing growth and dental development.
Symptoms
The most obvious symptom of persistent baby teeth is the simultaneous presence of baby and permanent teeth standing side by side in the jaw. This is often the case with canines and incisors.
Dogs with persistent baby teeth may also show signs of discomfort or pain, especially when chewing. This can manifest as reduced appetite or avoidance of chew toys. In some cases, malocclusion of the permanent teeth may occur, leading to an irregular bite.
Other symptoms may include gum inflammation, bad breath, or swelling in the area of the affected teeth. These conditions can worsen if food particles become lodged between the closely spaced teeth and cause bacterial infections.
Diagnose
The diagnosis of persistent deciduous teeth is usually made through a thorough dental examination of the dog by a veterinarian. This includes visual inspection of the teeth to confirm the presence of double rows of teeth. A veterinarian can also assess the condition of the gums and surrounding structures.
For an accurate diagnosis and to check the root depth of persistent teeth, X-rays may be required. These help assess the structure of the baby tooth roots as well as the position of the permanent teeth in the jaw. X-ray images / radiographs are particularly important to determine whether the roots of the baby teeth have been resorbed or are intact.
In some cases, a veterinarian may also perform a blood test to ensure that there are no underlying systemic problems or nutritional deficiencies that could affect tooth eruption.
Therapie
The most common treatment for persistent deciduous teeth is extraction of the affected baby teeth by a veterinarian. This procedure is usually performed under general anesthesia to spare the dog Pain and stress. Extraction is necessary to make room for the permanent teeth and prevent future dental problems.
After extraction, it is important to carefully monitor the dog’s oral hygiene to prevent infections. The veterinarian may recommend special dental care or an antibacterial mouth rinse to support healing. In some cases, a follow-up examination may be necessary to ensure that the dog’s dentition develops correctly.
If the persistent deciduous teeth have led to Malocclusion of the permanent teeth, orthodontic treatment may be required. This may include wearing special braces or other devices to move the teeth into the correct position and restore a proper bite.
Prognose und Nachsorge
The prognosis for dogs with persistent baby teeth is generally very good, especially if the affected teeth are detected and removed early. Most dogs recover quickly from tooth extraction and show no signs of discomfort afterward.
Early treatment usually prevents long-term complications such as gum disease or Malocclusion. However, if persistent deciduous teeth are not treated, they can lead to serious dental problems that affect the dog’s quality of life.
Prävention
To prevent persistent baby teeth, it is important to regularly monitor the dog’s dental and oral health, especially during tooth eruption. Regular check-ups with a veterinarian can help detect and treat problems early.
A balanced diet that contains all the necessary nutrients for healthy dental development is also important. Some veterinarians recommend using special chew toys or products that support dental health by cleaning the teeth while chewing and promoting gum health.
Dog owners should also make sure their pets do not chew on hard objects that could damage the teeth or disrupt tooth replacement. Good dental care at home, including regular tooth brushing, can also help maintain your dog’s oral health and reduce the risk of persistent deciduous teeth.
Ausblick auf aktuelle Forschung
Persistent deciduous teeth in dogs are a common dental problem that occurs particularly in smaller dog breeds. This anomaly can lead to Malocclusion and other oral health problems. Current research focuses on understanding the genetic and environmental factors that contribute to this disorder. Genetic studies have shown that certain breeds such as Chihuahuas and Yorkshire Terriers have a higher predisposition to persistent deciduous teeth. Researchers are currently investigating genetic markers associated with this condition to improve breeding selection and reduce the frequency of this problem.
Another line of research is investigating the best treatment approaches for persistent deciduous teeth. While the traditional approach involves extraction of the affected teeth by a veterinarian, alternative methods such as the use of braces or other orthodontic devices are also being studied. These methods could help reduce the need for surgical procedures and minimize costs and stress for the animals.
In addition, there are studies looking at the long-term effects of persistent deciduous teeth on dental health and the overall well-being of dogs. This research aims to assess the potential risks associated with baby teeth that are not removed, such as an increased risk of gum disease, cavities, and jaw malocclusions. By better understanding these risks, scientists hope to develop preventive measures that improve dogs’ dental health overall.
New developments in imaging technology are also opening up promising opportunities for the diagnosis and treatment of persistent deciduous teeth in dogs. High-resolution 3D imaging enables veterinarians to assess tooth structure and position more accurately, which can lead to better treatment decisions. These technologies are continuously being developed to improve diagnostic accuracy and optimize treatment planning.
Another exciting area of research is investigating the effects of diet and environmental factors on the development and loss of baby teeth in dogs. Scientists are exploring how certain nutrients and lifestyle factors can influence dental health and whether targeted nutritional strategies can reduce the risk of persistent deciduous teeth. This research could lead to new recommendations for feeding puppies to promote dental health from the start.
In summary, research into persistent deciduous teeth in dogs aims to better understand the underlying causes and develop more effective treatment and prevention strategies. Advances in genetics, imaging, and nutritional science offer promising approaches to improve dogs’ dental health and reduce the frequency of problems associated with persistent deciduous teeth.
Frequently Asked Questions (FAQs)
1. What are persistent deciduous teeth?
2. Which breeds are most commonly affected?
3. How can I tell if my dog has persistent deciduous teeth?
4. What problems can persistent deciduous teeth cause?
5. How are persistent deciduous teeth treated?
6. When should I take my dog to the vet?
7. Can persistent deciduous teeth fall out on their own?
8. Do persistent deciduous teeth affect jaw growth?
9. Are there ways to prevent persistent deciduous teeth?
10. Should I give my dog special food to support dental health?
Literatur
- Bellows, J., Berg, M. L., Dennis, S., Harvey, R. C., Lobprise, H. B., Snyder, C. J., Stone, A. E. S., & Van de Wetering, A. G. (2019). 2019 AAHA Dental Care Guidelines for Dogs and Cats. Journal of the American Animal Hospital Association, 55(2), 49–69. https://doi.org/10.5326/JAAHA-MS-6933
- Niemiec, B., Gawor, J., Nemec, A., Clarke, D., McLeod, K., Tutt, C., Gioso, M., Steagall, P. V., Chandler, M., Morgenegg, G., & Jouppi, R. (2020). World Small Animal Veterinary Association Global Dental Guidelines. Journal of Small Animal Practice, 61(7), E36–E161. https://doi.org/10.1111/jsap.13132
- Wallis, C., Ivanova, A., & Holcombe, L. J. (2024). Persistent deciduous teeth: Association of prevalence with breed, breed size and body weight in pure-bred client-owned dogs in the United States. Research in Veterinary Science, 169, 105161. https://doi.org/10.1016/j.rvsc.2024.105161
- Ziemann, D., Schreyer, J., & Gawor, J. (2026). Retained deciduous tooth root remnants in dogs: A ten-year retrospective study. Journal of Veterinary Dentistry. Advance online publication. https://doi.org/10.1177/08987564261425480
- Godziebiewski, P., Johnston, N., Thorne, S., & Adams, V. J. (2023). Outcome of surgical extraction of linguoverted deciduous mandibular canine teeth, performed as an interceptive orthodontic procedure in puppies, on permanent occlusion. Journal of Veterinary Dentistry, 40(3), 220–226. https://doi.org/10.1177/08987564231151851
- Hobson, P. (2005). Extraction of retained primary canine teeth in the dog. Journal of Veterinary Dentistry, 22(2), 132–137. https://doi.org/10.1177/089875640502200207