Patients who suffer from celiac disease have an intolerance to the cereal protein gluten. Which one of the following oral lesions is not usually found in these patients?

Patients with celiac disease often present with various oral manifestations due to malabsorption of nutrients and gluten intolerance. Glossitis, stomatitis, and ulceration are common lesions associated with celiac disease. Glossitis may occur due to vitamin deficiencies, particularly in iron, folate, and vitamin B12, leading to a swollen, inflamed tongue. Stomatitis refers to inflammation of the mucous membranes in the mouth, which can also be linked to nutritional deficiencies in these patients. Ulceration of the oral mucosa is a significant symptom that can arise from immune dysregulation and nutritional deficiencies.

In contrast, xerostomia, or dry mouth, is not typically associated with celiac disease. While individuals with celiac disease may experience a range of oral health issues, the connection between dry mouth and the condition is less direct compared to the other lesions listed. Xerostomia can occur due to other factors unrelated to celiac disease, such as medication side effects or other systemic conditions, making it the least relevant oral manifestation in this context. Thus, it is not usually found among the oral lesions commonly seen in patients suffering from celiac disease.