Dental Median palatal suture is a relief area while making upper edentulous impression because: A It overlies nerves and vessels B This area is prone for resorption C Overlying mucous membrane is thick D The submucosal layer is extremely thin 💡 Explanation Median palatal suture is a relief area while making upper edentulous impression because: ✓ Correct Answer: D. The submucosal layer is extremely thin