Small Animal Dental Care Guide — Preventing & Treating Malocclusion
Dental care guide for rabbits, hamsters, and chinchillas: understanding continuously growing teeth, malocclusion prevention, diet management, and veterinary treatment.
Key Takeaways
Dental care guide for rabbits, hamsters, and chinchillas: understanding continuously growing teeth, malocclusion prevention, diet management, and veterinary treatment.
Related Species
For small animals like rabbits, hamsters, guinea pigs, chinchillas, and degus, dental health is a critical issue directly linked to survival. These animals possess what is called "continuously erupting teeth," which grow throughout their entire life. Neglecting proper care can lead to malocclusion (improper bite), a serious dental problem.
How Continuously Erupting Teeth Work
Understanding that small animals have "continuously erupting teeth" that grow throughout their lives is an essential point that should be grasped as a fundamental aspect of pet care.
Rabbits have continuously erupting incisors (front teeth) and molars (back teeth), growing at approximately 2mm per week. Hamsters only have continuously erupting incisors, while their molars do not grow. Chinchillas and degus, like rabbits, have both continuously erupting incisors and molars. Guinea pigs also have continuously erupting teeth throughout their mouths.
Under normal conditions, the upper and lower teeth wear down appropriately as they come together, maintaining a consistent length. When this mechanism of natural wear from chewing hard foods breaks down, teeth grow abnormally and cause malocclusion.
What is Malocclusion?
Malocclusion refers to a condition where the bite is not normal. Teeth may grow in abnormal directions, or the upper and lower teeth may no longer meet properly.
Incisor malocclusion: Front teeth grow excessively, preventing the mouth from closing, or they grow inward or outward at angles. This is easily visible from the outside, making it a symptom that owners often notice.
Molar malocclusion: Malocclusion of the back teeth is difficult to see from the outside and often goes undetected for a long time. Back teeth grow at angles and can injure the cheeks or tongue, or their roots can grow and compress the jaw bone or tear ducts. For rabbits, this molar problem is particularly severe.
Causes of Malocclusion
The causes of malocclusion can be divided into genetic and environmental factors.
Genetic factors: Some individuals have jaw bone shapes that genetically predispose them to malocclusion. In particular, short-headed rabbit breeds like Netherland Dwarfs and Holland Lops, which have short jaws, tend to have tooth problems more frequently.
