Pros Flashcards
Limiting structures maxillary arch
Buccal sulcus
Buccal frenum
Labial sulcus
Labial frenum
Vibrating line
Hamular notch
Relief areas of maxillary arch
Palatine raphe
Crest of alveolar ridge
Palatine fovea
Support areas maxillary arch
Rugae
Tuberosity
Hard palate
Limiting structures mandibular arch
Labial frenum
Labial sulcus
Buccal frenum
Buccal sulcus
Retromolar pads
Lingual frenum
Alveololingual sulcus
Supporting structures mandibular arch
Buccal shelf
Residual alveolar ridge
Relief areas mandibular arch
Mylohyoid ridge
Genial tubercle
Objectives of complete dentures
Provide adequate masticatory function
Restore natural appearance
Restore normal speech
Comfort and preservation of supporting structure
Component parts of complete denture
Denture base, flange and border
Teeth
Denture surfaces
Polished surfaces
Fitting surface
Occlusal surface
Complete denture retention
The resistance to displacement of the denture base away from the ridge
Factors affecting physical retention of complete dentures
Adhesion
Cohesion
Atmospheric pressure
Gravity
Adhesion denture retention
Forces of attraction existing between dissimilar bodies in close contact - attraction between saliva and denture base
Cohesion denture retention
The forces of attraction existing between similar bodies in close contact - surface tension of saliva
Atmospheric pressure denture retention
The physical factor of hydrostatic pressure due to the weight of the atmosphere on the earth’s surface
Gravity denture retention
Working against the upper denture and for the lower denture
4 types of denture retention
Physical
Anatomical
Physiological
Mechanical