Dental Materials

  1. what are five examples of what materials placed in the oral cavity must be?
    • biocompatible
    • durable
    • nonreactive in acid or alkaline conditions
    • compatible with other materials
    • esthetically acceptable
  2. materials placed in the oral cavity must be: __________, ________, nonreactive in _______ or ______ conditions, _______ with other materials, and ______ acceptable
    • biocompatible
    • durable
    • acid or alkaline
    • compatible
    • esthetically
  3. materials must be compatible in environments of? (5)
    • moisture
    • stresses
    • temperature
    • acid levels
    • time
  4. how many lbs of pressure is on the occlusal surface during mastication?
    90-200 lbs
  5. how many lbs per sq of pressure is there on a cusp tip during mastication?
  6. dental materials must withstand forces (stress) of? (3)
    • mastication
    • bruxing
    • clenching
  7. each tooth is ideally suited for specific type of _____
  8. how do posterior teeth resist crushing forces?
    multi rooted to spread out force
  9. stress=amount of force exerted from ______ an object
  10. stress= ______ force resisting applied force
  11. what do foods, beverages and medicines convert into?
    lactic acid
  12. desired materials have low ____ and _____ absorption
    • solubility
    • H20
  13. a ______ current is possible between two dissimilar metals?
  14. what is an example of two materials that can produce glavanism?
    gold against amalgum
  15. t/f galvanism occurs with composite against amalgum
  16. what is pulpal stimulation from electric current?
    galvanic shock
  17. excessive contraction causes what?
    leakage-pulls away from the tooth
  18. what material can reduce thermal conductivity?
  19. which materials have less expansion and contraction?
    gold and procelain
  20. what is described as hue, chroma and value?
  21. t/f porcelain to metal crowns have poor light reflection
  22. detection of restorative materials is ______ in dental hygiene
  23. what is the most reliable on tooth colored fillings if you aren't sure?
    explorer (tactile)
  24. what are three ways to detect different types of restorative materials?
    • x-rays
    • explorer (tactile)
    • visual, light, air, magnification
  25. what is an example of galvanism?
    amalgam contacting gold
  26. an excessive film thickness may cause?
    improper seating of restoration
  27. microleakage may be responsible for? (3)
    • marginal staining
    • postoperative sensitivity
    • recurrent decay
Card Set
Dental Materials
oral environment and pt considerations