Cariology Flashcards
High surface energy = strong molecular attraction
Surface Energy
Rough things have (high or low) surface energy…… Stuff wants to stick to them
high
Polished/shiny/smooth things have (high or low) surface energy, stuff wants to slide off of them
low
t/f: dental caries is a transmissible disease.
true
Dental Caries Requires which of the following? ◦ SUSCEPTIBLE HOST ◦ BACTERIA ◦ FOOD SOURCE ◦ TIME ◦ All of the above
all above
(Which theory is this?)
◦ Biofilm is responsible for the disease ◦ Plaque is pathogenic when disease is present ◦ Specific Microbes are the cause
◦ Strep Mutans
◦ Lactobacillus and Actinomyces V. (acid producers, can live in acid) ◦ Control the pathogens= control the disease
Specific plaque hypothesis
- Community of bacteria, bacterial by-products, extracellular matrix, and water
◦ Accumulation of biofilm on teeth is HIGHLY ORGANIZED
◦ Few microorganisms are able to adhere to oral surfaces
◦ Streptococci prominent group
Biofilm
Which two bacteria make up Normal saliva biofilm and are not pathogenic
Strep sanguis and Strep mitis
T/f: Step mutans begin the lesion and lactobacillus is primarily responsible for progression of caries.
true
t/f: The role of genetics in caries formation is about 40% influence.
true
t/f: a patient will have an Inflammatory reaction when encroaching on pulp (wihtin 1 mm of pulp
true
(does this describe Remin or Demin?)
- Bacteria living in plaque feed off “leftovers” (sugars, fermentable carbohydrates) -Bacterial waste product is ACID
- lactic acid -Acid demineralizes enamel -Phosphates and Calcium are lost
demineralization
(does this describe Remin or Demin?)
-Saliva rinses away sugars -Saliva buffers acids -Minerals in saliva (calcium, phosphate) re-enter
tooth -Presence of fluoride facilitates process
remineralization
Remineralization Requires which of the following? Saliva Plaque Removal Diet modification Fluoride All of the above
all above
______ buffers ph, flushes away free floating organisms, has salivary proteins that are antibacterial, and contains Ca and Phosphate ions.
saliva
What Increases rate of Remineralization
◦ Attracts Ca ions
◦ Ca ions attract phosphate ions
Fluoride
pits and fissures are home to mostly ???
Simple streptococcal bacteria
Root surface is home to mostly??
◦ Complex bacterial community
◦ Mostly filamentous and spiral bacteria
◦ Additional complication- anatomy of rooth may render hygiene practices ineffective
◦ Unable to reach concavities with floss
t/f: Strep mutans initiates lesion
Lactobacilli follows and leads to progression of caries
true
t/f: Strep mutans doubles in only 1.32 hours in sucrose
true
______ (infected or affected) must be removed
◦ Bacteria present ◦ VERY rarely may leave in order to avoid pulp exposure
◦ Must place indirect pulp cap and seal caries i
infected dentin
______ (infected or affected dentin) may remain
◦ Soft, no bacteria present
affected
t/f: Acid output in caries active plaque is twice that of caries inactive
plaque
true
t/f: Once tooth is cavitated Bacterial (lactobacilli) that adhere poorly are now able to more easily adhere to more retentive
(SURFACE AREA) of cavity
true
t/f: Initial Carious lesions
◦ Treat with fluoride varnish, oral hygiene instructions
◦ Non-surgical treatment
true
____ ____ is a radiolucency at the bone level (normal bone level). Caries rarely form at a healthy bone level. Mostly would see recession with caries at bone level.
cervical burnout
Which model of caries management is described below?
◦ An infectious disease
◦ Diagnosis of a disease
◦ Risk assessment and modification
◦ Disease control and prevention of the disease and absence of disease occurrence
◦ Stop disease progression
◦ Managed and healthy mouth
◦ Prevention of recurrence and minimal replacement, save teeth for life
medical model
What is the single best risk predictor for dental caries?
current caries
