This is a case of palatal trauma from base narrow canine tooth in a dog. An incline plane was placed to correct the problem orthodontically. There are two problems with the incline.
1. It was placed only on one side. This decreases the passive force on the canine tooth by shifting the mandible to the side of the defect. This can cause TMJ problems, occlusal trauma to the other side of the arcade due to the shift and treatment failure.
2. The acrylic was placed directly on the mucosa causing mucositis. Fortunately for the patient none of the potential problems listed in item 1 were a clinical problem. Below are the images of the incline and the mucositis.