Guinea pigs are intriguing animals that each have unique personalities. Some are boisterous and bossy, and others shy and timid. All of them can make excellent pets in the right environment.

One of the most common problems we see in guinea pigs is the development of life-threatening dental disease. It is a horrible condition that we see all too commonly. This article looks at the common signs of dental disease, how to prevent it from happening to your guinea pig and what treatment options are available.

guinea pig yawn

What is Dental Disease?

Dental disease is a term that relates to problems with teeth. The term is used for several species and means something different in each species. For example, ferrets commonly get tartar build-up on their teeth, whereas rabbits most commonly develop sharp spurs that can dig into their tongue or cheek. Both problems, however, are referred to as dental disease.

Guinea pigs have two long slender incisors at the front of their mouth on both their upper and lower jaws, as well as four ‘cheek’ teeth (one premolar and three molars) on each occlusal surface at their back of their mouth. In between these areas is a little gap called the diastema.

Guinea pig teeth constantly grow throughout their life, and if they are not being worn down by chewing on lots of hay or grass, they start to elongate.

The most common form of dental disease in guinea pigs involves the elongation of their cheek teeth. The mandibular (bottom jaw) cheek teeth are often the worst affected, and they can get so bad that they can grow over and totally ‘entrap’ the tongue. This prevents the tongue from moving normally, which means the guinea pig cannot eat properly.

Other forms of dental disease in guinea pigs include dental abscess formation, irregular wear, elongation of the tooth roots, incisor problems and the presence of sharp spurs that can ulcerate the tongue or cheek.

Overgrown guinea pig teeth
Guinea pig dental

What Symptoms Should I Watch Out for?

Symptoms vary for each individual animal and can be very subtle, with some guinea pigs presenting with weight loss as their only symptom. More commonly, excessive salivation and changes in eating preferences (not eating or only eating softer foods) are seen.

Other symptoms can include weakness, facial swellings, vocalisation, not passing any faeces, not moving much, secondary respiratory infections and even death.

How Do You Diagnose Dental Disease?

Dental disease can often be diagnosed by an intraoral (looking inside the mouth) examination by an experienced guinea pig vet. Your vet will generally use a specialised speculum or otoscope to look inside your guinea pig’s mouth.

In some cases, dental disease is not always obvious during an intraoral exam, and in these cases, radiographs (x-rays), CT, or an examination under general anaesthesia may be recommended.

It is important to mention that while dental disease can often be diagnosed on examination, radiographs or CT are always a good idea, as they allow your vet to accurately assess how severe your guinea pig’s dental disease is and decide on the best treatment plan.

Guinea pig eating greens

What Treatment Options Are Available?

The treatment options available depend on the severity of the dental disease. For mild cases, the treatment may be as simple as increasing the amount of hay or grass in your guinea pig’s diet.

For more serious cases, a dental procedure under general anaesthesia may be needed. This involves using a specialised diamond-coated dental burr to carefully correct your guinea pig’s teeth back to the length and angle that they should be. In some advanced cases, tooth extraction is needed.

Dental disease can be a very painful condition for your guinea pig, so pain relief, as well as supportive feeding, is often needed.

Can Dental Disease Be Be Cured?

Unfortunately, unless the disease is caught early, it is very difficult to cure permanently. Often, this is because the angle that the teeth grow on has changed so even with correction, the teeth will still grow back abnormally.

Many guinea pigs with dental disease need regular dental procedures every 1-12 months for their whole life.

Guinea Pig Vet Clinic
Ana guinea pig case

How Do I Prevent Dental Disease From Occurring?

The good news is that while dental disease is often difficult to treat it is generally easy to prevent. The best method of prevention is to ensure that your guinea pig is fed a well-balanced diet with lots of hay or grass.

We recommend that guinea pigs have a diet based around 80% hay or grass, 15-20% appropriate vegetables +/- 5% high-quality guinea pig pellets. This promotes good dental wear, normal gastrointestinal function and appropriate water intake.

Low vitamin C levels are also a risk factor for the development of dental disease, so it is a good idea to ensure that your guinea pig is getting enough vitamin C in their diet. This can be provided in their vegetables, some specialised guinea pig pellets or in a separate vitamin C supplement.

Regular check-ups by an experienced guinea pig vet are recommended, as they allow dental disease to be detected early before it is too late.

For more information on guinea pig dental disease and its prevention, contact your local Unusual Pet Vets team.