Lecture 1 Flashcards
What is the difference between the surgical and medical models?
Surgical treats the symptoms and medical model tries to prevent and treat the disease
Define caries
A multifactorial process of demineralization and concurrent remineralization, and are often reversible
In the multifactorial process of caries, what are the agents?
Plaque biofilm, S. mutans, S. sobrinus, lactobacilli and others
In the multifactorial model of caries, what are the hosts?
The tooth, saliva quantity, saliva quality, immune responses
In the multifactorial model of caries, what makes up the environment?
Dietary fermentable carbohydrates
Is S. mutans gram-positive or negative?
Gram-positive (peptidoglycan layer in cell wall) they metabolize sucrose into lactic acid
What is the embryonic origin of enamel and what are its characteristics?
Ectoderm, avascular, acellular which makes it so it cannon repair itself
What is enamel made of?
95% mineral and 5% water
What is the embryonic origin of dentin?
Mesoderm
What is dentin made of?
75% inorganic, 20% organic, and 5% water
How much softer is dentin when compared to enamel?
Dentin has 1/5 the hardness of enamel
What is primary dentin?
Dentin that forms before tooth eruption
What is secondary dentin?
Dentin that forms after tooth eruption, forms through root formation
What is tertiary dentin?
Forms in response to stimuli from the bi-products of bacterial invasion in advance of the bacteria
