Benign migratory glossitis or geographic tongue is a benign condition that usually manifests as asymptomatic erythematous and migratory circinate patches, involving the lateral and dorsal aspects of the tongue. Extra-lingual lesions uncommonly occur and are mainly located on labial and buccal mucosae, lips and floor of the mouth. The present report describes one patient with a geographic lesion on the hard palate associated with lingual lesions and another patient who had multiple geographic lesions both in the hard and soft palate without lingual lesions. We found 64 cases in the English literature of ectopic locations with 22 palate involvement. No case of simultaneous involvement of the hard and the soft palate was found.

Background: Guided bone regeneration (GBR) is a reliable technique used in vertical and horizontal bone defects. The posterior mandibular region is an area limited by anatomic constraints. The use of resorbable membranes with a cortical component could compensate for the lack of rigidity of resorbable membranes without the complications of non-resorbable membranes. The aim of this study was to evaluate the mean bone gains of a xenogeneic cortical membrane in horizontal and vertical bone defects in comparison with other membranes in the literature. Methods: A porcine cortical membrane was used to perform 7 GBR in the posterior mandibular region of five patients. Preoperative (T0) and six months postoperative (T1) cone beam computed tomography were superimposed to measure the horizontal and vertical bone gain. Implants were positioned at all sites, six months after GBR. Complications and bone resorption around the implants were also documented. Results: The mean horizontal and vertical bone gains were 3.83 ± 1.41 mm and 4.17 ± 1.86 mm, respectively. The analysis of repeatability was 0.997. As many as 40% of patients experienced pain refractory to analgesics. No exposure or infectious phenomenon was observed. Conclusions: This xenogeneic cortical membrane seemed to provide interesting results in the regeneration of horizontal and vertical bone defects. Comparative and prospective studies are necessary to validate the effectiveness of this membrane.