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Unit 315 - Coggle Diagram

- - - - Class 3
        
        single surface on anterior teeth-
        mesial or distal but not including incisal edge
      - Class 4
        
        Two surfaces of anterior teeth-
        -mesial or distal plus incisal edge
      - Class 2
        
        Two or more surfaces:
        -occlusal plus; mesial/distal/lingual in posterior teeth
      - Class5
        
        any cavity on the cervical 2/3rds of the tooth
      - Class 1
        
        Single surface:
        -pits and fissures
        -occlusal of posterior teeth
        -cingulum of upper anteriors
      - Located on cusps of posterior teeth
  - - - removes enamel and dentine
      - 500,00 revolutions per minute and driven by compressed air
      - uses diamond or tungsten carbide friction grip burs
      - contra-angled for access to every tooth and built in water spray
    - - removes carious dentine
  - - - not fully set until 24 hours afterwards
      - cannot bond with tooth tissue, an undercut cavity is required for mechanical retention
      - conducts hot and cold tot he nerve so in deep cavities it needs an insulating lining
        
        zinc oxide and eugenol
        
        calcium hydroxide
        
        GIC
      - mandatory to use a rubber damn when
        placing amalgam on pregnant women
    - - inorganic filler in a resin binder
      - doesn't have the durability of amalgam
      - cavity is acid etched
        
        creates microscopic pits by demineralising the top layer of enamel prisms
    - - glass polyalenoate
      - powder and liquid
        
        powder made from aluminosilicates and the liquid is polyacrylic
      - only cariostatic material
        
        releases fluoride
        
        bonds directly to enamel and dentine