Department : Prostho
They can be broadly grouped into
1. Limiting structures
• Labial frenum.
• Labial vestibule.
• Buccal frenum.
• Buccal vestibule.
• Lingual frenum.
• Alveololingual sulcus.
• Retromolar pads.
• Mylohyoid ridge.
• External oblique line.
2. Supporting structures
• Buccal shelf area
• Residual alveolar ridge
3.Relief area
• Crest of the residual alveolar ridge.
• Mental foramen.
• Genial tubercles
• Torus mandibularis.
