Bad breath (halitosis) is caused by bacteria, plaque, tartar, decomposing food particles, or death of tissue. Treatment of halitosis in cats involves eliminating the cause(s). The teeth need to be thoroughly cleaned and polished under general anesthesia. Teeth affected by advanced periodontal disease or tooth resorption need to be extracted. Reducing the accumulation of plaque, tartar, and resulting halitosis can be achieved by using VOHC-accepted products.

Fractured teeth in cats can result from fights, car accidents, and chewing on hard objects. There are five classifications of tooth fractures and each needs treatment to avoid tooth sensitivity and pain. Because cats have thin enamel, even a small chip fracture can cause pain and needs veterinary care. Clinical signs include chewing on one side of the mouth, excessive drooling, pawing at the mouth, and facial swelling.

Alveolar osteitis, also called expansile osteitis, is a relatively common condition that results from chronic periodontal disease in cats. It is painful and can interfere with grooming and eating. If this disorder is detected early, it may be possible to treat the disease without tooth extraction by performing thorough periodontal therapy (dental cleaning and scaling).

When a tooth is broken with the pulp exposed, there are only two choices for treatment: root canal therapy or extraction. Root canal therapy involves removing the pulp from the center of an injured tooth, sterilizing the canal, and replacing the removed pulp with dental materials; this prevents bacteria from penetrating the center of the tooth. Root canal therapy is less invasive than extraction but requires advanced training and specialized equipment.