Your veterinarian can see signs of gingivitis and tartar buildup by examining your dog’s mouth. However, since most periodontal disease occurs beneath the gum line, the only way to truly assess your dog’s mouth is to perform an examination while your pet is under anesthesia. Your veterinarian can use a dental probe to measure any loss of attachment around each tooth and take dental radiographs (x-rays) to assess for bone loss, abscesses, and other problems.