Therories of caries 1/12/17 Flashcards
What is the proper definition for Dental caries lesions?
-A multifactorial process of demineralization and concurrent remineralization, and are often reversible
Where can dental caries occur?
- Enamel
- Dentin
- Cementum (Root caries)
What can occur if the biofilm (plaque) is left undisturbed for a period of time on any tooth surface?
-Caries lesion
What pH does enamel begin to demineralize?
-5.5
T/F
Dental plaque is considered a biofilm
True
What was the surgical model of fixing dental caries?
-Drill and Fill
What is the medical model of dental caries?
Caries lesions are treated by elimination or reduction of risk factors
What are the two most common bacteria in causing bacteria?
- Streptococcus mutans
- Lactobacilli
- S. sobrinus
What three things does the multifactorial model of the caries process need?
- Agent
- Environment
- Host
What is the agents in the multifactorial model?
-S. Mutans, S. sobtinus, Lactobacilii and other pathogens cause plaque biofilm
What are the host factors in the multifactorial model of the caries process?
- Tooth anatomy
- Saliva quantity
- Saliva quality and buffering capacity
- Immune responses (systemic disease)
What is in the environment of the multifactorial model of the caries process?
-Dietary fermentable carbohydrates
T/F
Class I caries can occur on the side of the tooth as long as it is part of the pit or fissures.
True
T/F
Other non-cariogenic bacteria can become cariogenic for short periods of time under certain conditions.
True
Strep Mutans is a gram + or a gram - bacteria.
Gram +
