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Questions and Answers
What is the classification of dental caries based on the location of the lesion?
What is the classification of dental caries based on the location of the lesion?
Which theory of dental caries dates back to the VII century BC?
Which theory of dental caries dates back to the VII century BC?
What percentage of the population in Spain is affected by dental caries?
What percentage of the population in Spain is affected by dental caries?
What are the consequences of dental caries mentioned in the text?
What are the consequences of dental caries mentioned in the text?
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Which type of caries is associated with an existing restoration?
Which type of caries is associated with an existing restoration?
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What is the main cause of tooth tissue destruction in dental caries?
What is the main cause of tooth tissue destruction in dental caries?
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Which theory of dental caries proposed that cavities are due to the acids produced by microorganisms from sugars?
Which theory of dental caries proposed that cavities are due to the acids produced by microorganisms from sugars?
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According to the Keyes Scheme, which factor is involved in dental caries alongside tooth and oral microbiota?
According to the Keyes Scheme, which factor is involved in dental caries alongside tooth and oral microbiota?
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Which bacteria is known for producing insoluble extracellular polysaccharides from sucrose, helping them adhere to tooth surfaces and bind more bacteria?
Which bacteria is known for producing insoluble extracellular polysaccharides from sucrose, helping them adhere to tooth surfaces and bind more bacteria?
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What is the pH range below which demineralization of enamel starts, according to the text?
What is the pH range below which demineralization of enamel starts, according to the text?
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Which factor can contribute to breaking the balance between demineralization and remineralization, leading to the appearance of caries?
Which factor can contribute to breaking the balance between demineralization and remineralization, leading to the appearance of caries?
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Which type of decay is described as the most frequent in the initial lesion of caries affecting the enamel?
Which type of decay is described as the most frequent in the initial lesion of caries affecting the enamel?
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Which bacterium has a low ability to colonize the tooth surface and is unimportant at the beginning of the lesion but becomes very important in the progression and dentin lesions?
Which bacterium has a low ability to colonize the tooth surface and is unimportant at the beginning of the lesion but becomes very important in the progression and dentin lesions?
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What does the text describe as a factor that can favor aciduric bacteria, such as S. mutans and lactobacilli, becoming predominant?
What does the text describe as a factor that can favor aciduric bacteria, such as S. mutans and lactobacilli, becoming predominant?
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Which theory suggested that bacterial proteolytic enzymes degrade organic matter, releasing chelating agents that dissolve tooth minerals?
Which theory suggested that bacterial proteolytic enzymes degrade organic matter, releasing chelating agents that dissolve tooth minerals?
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What is the most cariogenic sugar according to the text?
What is the most cariogenic sugar according to the text?
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Which factor is NOT involved in dental caries according to the Keyes Scheme?
Which factor is NOT involved in dental caries according to the Keyes Scheme?
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Which bacteria becomes predominant when pH drops below a certain range, as mentioned in the text?
Which bacteria becomes predominant when pH drops below a certain range, as mentioned in the text?
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Which bacteria predominate in tissues such as root and dentine?
Which bacteria predominate in tissues such as root and dentine?
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What bacterium is isolated from the oral cavity of people without caries?
What bacterium is isolated from the oral cavity of people without caries?
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Which mechanism does fluoride utilize for the prevention of dental caries?
Which mechanism does fluoride utilize for the prevention of dental caries?
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What is the main function of noncaloric sweeteners in preventing dental caries?
What is the main function of noncaloric sweeteners in preventing dental caries?
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What is the primary effect of polyols such as xylitol in preventing dental caries?
What is the primary effect of polyols such as xylitol in preventing dental caries?
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What is the source of systemic fluoride intake?
What is the source of systemic fluoride intake?
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Which factor does not contribute to the control of factors related to dental caries?
Which factor does not contribute to the control of factors related to dental caries?
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What is a potential consequence of excessive fluoride intake?
What is a potential consequence of excessive fluoride intake?
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What is the primary method for controlling bacterial plaque?
What is the primary method for controlling bacterial plaque?
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How can patients at high risk of dental caries be identified?
How can patients at high risk of dental caries be identified?
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Which bacterium's growth is inhibited by bacteriocins?
Which bacterium's growth is inhibited by bacteriocins?
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What is the main purpose of identifying patients at high risk of caries?
What is the main purpose of identifying patients at high risk of caries?
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Study Notes
Classification of Dental Caries
- Dental caries can be classified based on the location of the lesion as pit and fissure caries, smooth surface caries, and root caries.
Theories of Dental Caries
- The theory of dental caries that dates back to the VII century BC suggests that cavities are due to the acids produced by microorganisms from sugars.
- The Chelation theory proposes that bacterial proteolytic enzymes degrade organic matter, releasing chelating agents that dissolve tooth minerals.
Prevalence of Dental Caries
- In Spain, approximately 80% of the population is affected by dental caries.
Consequences of Dental Caries
- Consequences of dental caries include tooth tissue destruction, pain, and potentially, systemic infections.
Types of Caries
- Recurrent caries is associated with an existing restoration.
- Rampant caries is a type of decay that is described as the most frequent in the initial lesion of caries affecting the enamel.
- Secondary caries occurs in the dentin.
Tooth Tissue Destruction
- The main cause of tooth tissue destruction in dental caries is the acid produced by microorganisms from sugars.
Keyes Scheme
- The Keyes Scheme involves three factors in dental caries: tooth, oral microbiota, and diet.
Bacteria and Dental Caries
- Streptococcus mutans is known for producing insoluble extracellular polysaccharides from sucrose, helping them adhere to tooth surfaces and bind more bacteria.
- Lactobacilli become predominant when pH drops below a certain range.
- Actinomyces bacteria predominate in tissues such as root and dentine.
- Streptococcus sanguis is isolated from the oral cavity of people without caries.
Factors Contributing to Dental Caries
- Factors that can contribute to breaking the balance between demineralization and remineralization, leading to the appearance of caries, include diet, oral microbiota, and tooth characteristics.
- A diet high in sugars and acids can favor aciduric bacteria, such as S.mutans and lactobacilli, becoming predominant.
pH and Demineralization
- The pH range below which demineralization of enamel starts is 5.5.
Prevention of Dental Caries
- Fluoride utilizes the mechanism of inhibition of acid production and inhibition of enzymatic activity to prevent dental caries.
- Noncaloric sweeteners, such as xylitol, can prevent dental caries by reducing the amount of sugars available for fermentation by bacteria.
- The primary effect of polyols, such as xylitol, in preventing dental caries is to reduce the production of acid by bacteria.
- Systemic fluoride intake is primarily from community water fluoridation.
Control of Dental Caries
- The primary method for controlling bacterial plaque is good oral hygiene practices, including regular brushing and flossing.
- Patients at high risk of dental caries can be identified through a combination of clinical examination, radiographs, and evaluation of diet and oral hygiene habits.
- The main purpose of identifying patients at high risk of caries is to provide targeted prevention and early intervention.
Bacteriocins
- Bacteriocins can inhibit the growth of Streptococcus mutans.
Excessive Fluoride Intake
- A potential consequence of excessive fluoride intake is dental fluorosis, which can cause white spots on the teeth.
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Description
Explore the microbiology of dental caries in this quiz covering the definition, impact, and relevance of this chronic infectious disease. Learn about the bacteria in dental plaque and the effects on tooth tissues, including enamel, dentin, and cement.
