what is the mucosal support (in cm^2) for maxilla nd mandi?
maxi-22.96 cm62
mandi-12.25 cm^2
what is residual ridge / residual bone?
residual ridge is that part of alveolar ridge which remains after the loss of teeth
resistance to vertical displacement of denture?
retention
Compare the mastication forces of the natural dentition nd CD
- Natural dentition masticatory forces : 200N/175 lbs
- CD masticatory forces is 60-80 N/ 22-24 lbs
what is the pdl attachment (in cm^2) for each dental arch?
45 cm^2
components of alveolar ridge?
- residual ridge
- alveolar bone
- mucosa
- submucosa
resistance to vertical displacement towards denture bearing areas is?
support
types of jaw movements/ forces
- functional (mastication nd speech
- parafunctional (chenching + grinding)
Morphological changes asssociated with edentulous state
- loss of labiodental angle
- loss of horizontal labial angle
- loss of columnella-philtral angle
- deepening of nasolabial groove
- narrowing of lips
What are the 3 classes?
Class 1: normal occlusion
CLass 2: retrognathic
Class 3: Prognathic
What are the components of periodontium?
- hard connective tissue (cementum+alveolar bone)
- soft connective tissue (pld + lamina propia of gingiva)
components of residual ridge?
- denture-bearing area
- submucosa
- periosteum
- underlying bone
what is osteoporosis?
accelerated loss of trabecular bone
-2 types: Type 1: affects woman a decade after menopause
Type 2: affects men/woman for no reason
resistance to horizontal/lateral displacement?
stability
what is centric relation?
most posterior/ retruded position of mandible in relation to the maxilla
greatest force on teeth?
vertical (mastication + deglutition)
what is centric occlusion?
-slightly anterior to centric
relation
-most functional tooth contacts occur here
what is combination syndrome?
CUD + PLD not balanced properly
-causes resorption of primaxilla
-occlusal plane problems
-hypertrophy on tuberosity
Epulis fissuratum
Mucosal hyperplasia caused by ill fitting and overextended dentures
