RPD Flashcards
EFFECTS OF TOOTH LOSS
alveolar resorption, tooth movement (drift), speaking effected (F sounds if anterior)
WHICH CRADDOCK CLASS WOULD A FREE END SADDLE BE
3 - both : as no teeth only mucosa at one end
WHAT ARE THE ONLY TEETH THAT CAN HAVE OCCLUSALLY APPROACHING CLASPS
molars
WHAT DISEASES CAN EFFECT DENTURES
rheumatoid arthritis - in/out
osteoporosis/ bisphosphonates - careful when planning extraction
xerostomia - need saliva to retain and makes uncomfy
neuromuscular disease - Parkinson’s - hard to retain
Mucosal disease
WHAT SHOULD YOU LOOK FOR WHEN EXAMINING INTRA-ORALLY FOR DENTURE PATIENT
residual ridges, mouth health, state of abutment teeth, missing teeth, soft tissues, denture bearing area, denture stomatitis
DEFINE SUPPORT
The resistance of the denture to occlusally directed load - what stops denture moving towards soft tissues - rests
DEFINE RETENTION
Resistance of denture to vertical displacement - lifting away from tissues and falling out - clasps
DEFINE INDIRECT RETENTION
resistance to rotational displacement
WHAT TO LOOK FOR WHEN ASSESSING SMILE
lip support smile line does occlusion line up state of teeth shade/ size/ shape visible denture components buccal corridors
CAUSES OF DENTURE STOMATITIS
continuous denture wearing, keeping in overnight, not washing them properly/regularly, salivary flow low, material, age of denture, smoking, diet, plaque pH
NEWTONS TYPE 1
Localised inflam, reasonable OH but dont remove denture at night
NEWTONS TYPE 2
Diffuse erythema involv part/all denture bearing area
NEWTONS TYPE 3
Long standing, inflammatory papillary hyperplasia
WHICH FUNGI CAUSES DENTURE STOMATITIS
CANDIDA ALBICANS
WHAT ARE STOCK TRAYS USED FOR
primary impressions only as they are standardised sizes so when we dont require precison
WHAT IS RED RIBBON WAX USED FOR
adjusting stock trays in primary impressions
WHEN IS COMPOUND MATERIAL USED
impressions
underneath alginate in free end saddles
mainly in mandible lingually
WHERE TO STAND WHEN TAKING UPPER IMPRESSION
behind
WHERE TO STAND WHEN TAKING LOWER IMPRESION
in front
HOW TO REMOVE IMPRESSIONS
finger into buccal sulcus
WHAT TO DO AFTER TAKING IMPRESSION
disinfect in perform 10 min
inspect
labelled bag w wet paper towel
WHY PUT AN IMPRESSION INTO BAG WITH WET PAPER TOWEL
so it doesn’t dry out and cause dimensional changes
WHAT DOES THE LAB DO WITH PRIMARY IMPRESSIONS
pour them into study casts
WHAT ARE THE 3 TYPES OF GYPSUM AND THEIR PROPERTIES
- plaster - large irregular particles
- stone - small reg
- improved dental stone - small reg w chemicals to reduce expansion