- Broad square ridges devoid of undercuts and bony abnormalities.
- Definite cuspid eminences and alveolar tubercules; a broad palate with uniform depth of vault in the maxillary arch.
- Broad buccal shelf and firm retromolar papillae in the mandibular arch.
- A definite vestibular fornix, devoid of muscle attachments.
- Frenum attachments high in the maxillary and low in the mandibular arches.
- A clearly defined and well-developed lingual sulcus.
- A lateral throat form that allows suitable extension into the retromylohyoid space.
- A firm mucosal covering over the denture-bearing area.
- Mucous membrane in the vestibule fornix and floor of the mouth which is loosely and movably attached for denture seal.
- A gradually sloping palate with a passive reflection at the junction of the hard and soft palate.
- A tongue normal in size, position, and function.
- A normally related maxilla to mandible.
- Good muscle tonus and coordination in mandibular movements.
- Adequate inter-ridge space for the favourable placement of teeth
- Saliva of suitable viscosity and quantity
- Hard and soft tissues devoid of any signs of pathologic disorder.
Reference: Syllabus of Complete Denture By HEARTWELL – 4th edition