The bony hard palate is formed anteriorly by the palatine processes of the maxilla and posteriorly by the horizontal plates of the palatine bones. It separates the oral and nasal cavities and provides attachment for the palatine mucosa and the muscles of the soft palate at its posterior border. The incisive foramen at the midline anterior hard palate transmits the nasopalatine nerve and vessels.
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| Landmarks |
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| Ossification | Formed by the palatine processes of the maxillae and the horizontal plates of the palatine bones, ossifying in membrane after the palatal shelves fuse at about 10-12 fetal weeks. |
The hard palate is the surgical site for palatal cleft repair and bone grafting. Le Fort I osteotomy mobilises the entire hard palate with the attached upper dentition by cutting through the walls of the maxilla above the palate level. Palatal tori (exostoses) on the midline hard palate are benign but may require removal for denture fitting. The greater palatine foramen provides access for greater palatine nerve block used in palatal procedures.
Failure of fusion of the palatine processes during fetal development produces a hard palate cleft with open communication between the oral and nasal cavities, causing feeding difficulties in infancy and speech problems from velopharyngeal incompetence; repaired surgically at 9-18 months of age.
Le Fort fractures cross the hard palate through the midline or at the pterygomaxillary junction, mobilising the entire palatal vault; repair requires precise occlusal restoration with maxillomandibular fixation and plate osteosynthesis.
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