DH Theory 2

  1. What is the primary etiologic factor in the development of gingival and periodontal diseases?
    dental biofilm
  2. directly causing
  3. true or false. Dental biofilm adheres firmly to the tooth surface, and can be removed completely by self cleansing.
    FALSE! it can NOT be completely removed by self cleansing
  4. Name 4 regular factors that can contribute to disease development
    • etiologic
    • predisposing
    • contributing
    • risk
  5. a factor that is the actual cause of a disease or condition. ex. biofilm
  6. factor that renders a person susceptible to a a disease or condition. ex. smoking
    predisposing factor
  7. factor that lends assistance to, supplements to, or adds to a condition or disease. ex. diabetes or medications
    contributing factor
  8. an exposure that increases the probability that disease will occur. ex. high BP, or family history of caries
    risk factor
  9. true or false. etiologic, predisposing, and contributing factors can be local or systemic
  10. a factor in the immediate environment of the oral cavity or specifically in the environment of the teeth or periodontium. ex. broken tooth
  11. a factor that results from or is influenced by a general physical or mental disease or condition. ex. diabetes, AIDS, etc
  12. Name 4 dental factors that contribute to disease development
    • tooth surface irregularities
    • tooth contour
    • tooth position
    • dental prostheses
  13. How might surface irregularities of teeth influence disease development?
    pellicle and biofilm microorganisms attach to these surfaces
  14. pits, grooves, cracks
    exposed or altered cementum
    are all examples of what dental factor?
    tooth surface irregularities
  15. How might tooth contour influence disease development?
    altered shape may interfere with the self-cleansing mechanisms and make personal care procedures difficult
  16. extra or missing teeth
    bell-shaped crown with prominent contours
    flat proximal surfaces with faulty contact
    altered occlusal and incisal surfaces from attrition
    erosion or abrasion
    inadequate restoration contours
    are all examples of what dental factor?
    tooth contour
  17. How might tooth position influence disease development?
    irregular alignment of teeth leave areas conductive to collection of microorganisms for biofilm formation
  18. crowded or overlapped teeth
    rotated teeth
    missing contact
    opposing tooth missing
    incomplete eruption
    partial eruption
    lack of function from missing teeth, open bite, max. ant. protrusion, cross bite, or unilateral chewing
    food impaction
    defective contact
    are all examples of what dental factor?
    tooth position
  19. What are 3 reasons that dental prostheses may influence disease development?
    • orho appliances provide retentive areas
    • fixed partial dentures with weird shapes or margins
    • removable partial denture with inadequately adapted clasps
  20. Name 3 gingival factors that influence disease development
    • gingival position
    • size and contour
    • mouth breathing
  21. How might the position of the gingiva influence disease development?
    deviations from normal provide retentive areas for biofilm
  22. receded gingiva
    enlarged gingiva
    reduces height of interdental papilla
    tissue flap over occlusal surface
    periodontal pocket
    are all examples of what gingival factor?
    gingival position
  23. What are 2 reasons that size and contour of gingiva influence disease development?
    • deviation of shape of enlarged gingiva; rolled, bulbous, or cratered
    • combination of size of gingiva and presence of irregular restorations or dental prostheses can result in marked biofilm retention
  24. How might mouth breathing influence disease development?
    dehydration of oral tissues in anterior region leads to changes in overall size, shape, surface texture, and consistency of the gingiva
  25. What are 2 'other' factors that influence disease development?
    • personal oral care
    • diet and eating habits
  26. What are 3 personal oral care factors that may lead to disease development?
    • neglect
    • faulty biofilm control techniques
    • awareness of oral cleanliness
  27. Describe the process of self-cleansing mechanisms of the teeth and mouth etc. (5 steps)
    • 1. food enters the mouth
    • 2. chewing
    • 3. food forced out by bite pressure
    • 4. process repeated until food swallowed
    • 5. remaining food particles are removed
  28. Once the food enters the mouth, how does salvary flow self-cleanse?
    • the flow increases as a result of sensory reflux stimulation
    • saliva lubricates food and oral tissues
  29. During the chewing process, how do the ridges and contact areas act as self-cleansing mechanisms?
    • marginal ridges force particles to occlusal surface and away from proximal region
    • contact areas prevent interdental entrance
  30. How do embrasures self cleanse?
    they provide spillways for excape of particles
  31. how do cervical enamel ridges self cleanse?
    they deflect particles away from the free and attached gingiva
  32. how do gingival crests self cleanse? (3)
    • they prevent retention of particles by position at a point below the height of contour
    • knife-edge shape
    • close adherence to tooth surface
  33. How do the interdental papilla self cleanse?
    they fill the interproximal space and prevent particles from entering
  34. during repeated chewing, how does saliva self cleanse?
    it moistens food reducing the adhering capacity of food
  35. How does the tip of tongue self cleanse?
    it explores and attempts to dislodge remaining particles
  36. How do the lips and cheeks self cleanse?
    in conjunction with the tongue, they aid in the natural rinsing process by forcing saliva over and between the teeth
  37. true or false. Saliva flow continues in increased amounts during rinsing and swallowing of particles
Card Set
DH Theory 2
week one