Perform Professional Veterinary Dental Cleaning and Extractions

Professional dental intervention is the only way to resolve established periodontal disease causing weight loss. Follow these steps for treatment:

1. Veterinary Consultation: Schedule an appointment with a veterinarian for an oral exam and bloodwork to ensure the cat is fit for anesthesia.
2. Anesthesia and Assessment: Under general anesthesia, the veterinarian will perform a full-mouth dental radiograph series to evaluate bone loss and root integrity.
3. Professional Cleaning: Use ultrasonic scalers and hand instruments to remove plaque and tartar buildup both above and below the gumline.
4. Surgical Extraction: If periodontitis has caused irreversible damage or if the cat has stomatitis, the veterinarian will extract the affected teeth.
5. Post-Operative Care: Administer prescribed pain relief and antibiotics as directed. Provide soft food for 7-14 days to allow the surgical sites to heal.

Verification: The fix is verified when the cat resumes normal eating habits, regains lost body weight, and shows no further signs of oral pain such as pawing at the face or dropping food.