Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/32

Click to flip

32 Cards in this Set

  • Front
  • Back
Types of soft dental deposits
acquired pellicle
microbial plaque
materia alba
food debris
acquired pellicle
thin protein film. derived supragingivally from saliva and subgingivally from gingival sulcus fluid. It is ACELLULAR and reforms in minutes after removal
Characteristics of pellicle
protective barrier against acids, lubrication, nidus for bacteria, mode for calculus attatchment
biofilm
dense, organized, non calcified. Adhere firmly to acquired pellicle. It reforms daily.
Only way biofilm can be removed
mechanically
The basic steps of plaque formation
1. pellicle formation
2. bacterial colonization
3. plaque maturation
composition of plaque
80% water and 20% organic and inorganic solids

of the solis 70% is MO and 30% is intercellular matrix
What composes intercellular matrix of plaque
Ca and P and flouride
what composes organic elements of plaque
Carbs made from sucrose, proteins, and lipids
pathogenic effects of bacterial plaque (biofilm)
1. cariogenic
2. periodontal disease
3. calculoenic
caries formation
cariogenic food
plaque
acid formation
decalcification
caries
ways to detect bacterial plaque
1. direct vision
2. explorer
3. disclosing agent
4. gingival color change
material alba
visible soft mix of salivary proteins, bacterial and epithelial cells. Loosely attached to plaque, or tooth surface. It can coome off with forceful water spray
Where is food debris retained?
occlusion
anantomy of tooth
appliances
open contacts
restorations
hard dental deposits
calculas
what alwyas covers calculas
plaque
formation of calculus
1. pellicle formation
2. plaque formation and matureatin
3 mineralization
mechanism of mineralization
same for supra and subgingival but they mineralize seperately.
rate of calculus formation
12 days
but can begin within 24-48 hours!!!!!
What seperates calculus layers?
seperated by a pellicle and the outer layer is covered by plaque
source of supragingival calculus
saliva
color of supragingival calculus
white, creamy yellow

very bulky, moderatley hard
radiograph of supragingival calculus
very dense visbile causes a calculus bridge
source of subgingival calculus
gingival sulcular flid and inflammatiory exudate
color of subgingival calculus
light or dark brown, greeen, or black. stain is due to blood pigments
what is hard subgingival or supragingivla calculus?
subgingival.
Radiograph of subgingival calculus
can see it interproximally
composition of calculus
75-85% inorganic
Ca, P, carbonate, Na, Mg, K, crystals which is 2/3 of the inorgainic material
organic portion of calculas
microbes, wbcs, epithelial cells, and salivary mucins
does calculus cause pocket?
NO calculus is the result of pockets. plaque causes pocket
calculus detection
visulual with air
gingival color change
tactile
disclosant
transillumination
radiograph
purpose of plaque index
1. help recoginize oral problem
2. revel degree of oral hygiene effectiveness
3. motivate pt to eliminate disease
4. evaluate success over a period of time by comparison
5. make pt own his/her disease