Podcast
Questions and Answers
Which sugar is most rapidly metabolized to produce extracellular polysaccharides?
Which sugar is most rapidly metabolized to produce extracellular polysaccharides?
What distinguishes extrinsic sugars from intrinsic sugars?
What distinguishes extrinsic sugars from intrinsic sugars?
What is a consequence of simple sugars being metabolized by bacteria?
What is a consequence of simple sugars being metabolized by bacteria?
Which carbohydrates are considered less cariogenic due to their digestion?
Which carbohydrates are considered less cariogenic due to their digestion?
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What does a critical pH level indicate regarding tooth enamel?
What does a critical pH level indicate regarding tooth enamel?
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Which of the following foods contain intrinsic sugars?
Which of the following foods contain intrinsic sugars?
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What process occurs when saliva becomes supersaturated with ions in acidic environments?
What process occurs when saliva becomes supersaturated with ions in acidic environments?
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Which carbohydrate listed is only slightly broken down by salivary amylase?
Which carbohydrate listed is only slightly broken down by salivary amylase?
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What is the definition of dental caries?
What is the definition of dental caries?
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Which factor is NOT associated with the aetiology of dental caries?
Which factor is NOT associated with the aetiology of dental caries?
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Which of the following best describes the aetiological agents for caries?
Which of the following best describes the aetiological agents for caries?
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What is the role of biofilm in the carious process?
What is the role of biofilm in the carious process?
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Which component is essential for preventing dental caries?
Which component is essential for preventing dental caries?
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What does the term ‘fermentable carbohydrates’ refer to in the context of caries?
What does the term ‘fermentable carbohydrates’ refer to in the context of caries?
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Which of the following structures is considered a susceptible area for caries development?
Which of the following structures is considered a susceptible area for caries development?
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Which of the following statements best describes the carious process?
Which of the following statements best describes the carious process?
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What is a primary method to treat dental caries?
What is a primary method to treat dental caries?
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What metabolic activity is primarily responsible for the dissolution of tooth surfaces in caries?
What metabolic activity is primarily responsible for the dissolution of tooth surfaces in caries?
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Which of the following does not contribute to poor oral health?
Which of the following does not contribute to poor oral health?
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Which statement accurately represents the all-encompassing definition of caries?
Which statement accurately represents the all-encompassing definition of caries?
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What is the significance of understanding the aetiology of dental caries in clinical practice?
What is the significance of understanding the aetiology of dental caries in clinical practice?
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What is the role of plaque bacteria in the process of caries formation?
What is the role of plaque bacteria in the process of caries formation?
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Which area is NOT typically considered a susceptible site for dental caries?
Which area is NOT typically considered a susceptible site for dental caries?
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In caries development, what factor is critical alongside the presence of a susceptible tooth surface?
In caries development, what factor is critical alongside the presence of a susceptible tooth surface?
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What occurs when the pH of the environment is greater than the critical pH for enamel?
What occurs when the pH of the environment is greater than the critical pH for enamel?
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Which of the following statements about time and frequency of acid attacks is true?
Which of the following statements about time and frequency of acid attacks is true?
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Which bacteria are favored when the pH drops below the critical level?
Which bacteria are favored when the pH drops below the critical level?
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What is the effect of an acidic environment on tooth minerals?
What is the effect of an acidic environment on tooth minerals?
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According to Stephan's studies, how long does it typically take for the pH to return to normal after exposure to fermentable sugars?
According to Stephan's studies, how long does it typically take for the pH to return to normal after exposure to fermentable sugars?
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What is the critical pH range for dentine?
What is the critical pH range for dentine?
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What happens to the tooth when there is a neutral environment?
What happens to the tooth when there is a neutral environment?
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What effect does a thicker dental biofilm have on bacterial populations?
What effect does a thicker dental biofilm have on bacterial populations?
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What is the primary effect of lactic acid produced by anaerobic bacteria on tooth enamel?
What is the primary effect of lactic acid produced by anaerobic bacteria on tooth enamel?
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Which bacteria are primarily associated with enamel caries development?
Which bacteria are primarily associated with enamel caries development?
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What happens to calcium ions in plaque when sugar is consumed more frequently than every 2-3 hours?
What happens to calcium ions in plaque when sugar is consumed more frequently than every 2-3 hours?
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In the Vipeholm study, which group of patients showed the most caries development?
In the Vipeholm study, which group of patients showed the most caries development?
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How does frequent sugar intake affect the balance of demineralisation and remineralisation?
How does frequent sugar intake affect the balance of demineralisation and remineralisation?
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What condition can develop if demineralisation continues over time?
What condition can develop if demineralisation continues over time?
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Which of the following is true regarding the role of sugars in caries development according to the content provided?
Which of the following is true regarding the role of sugars in caries development according to the content provided?
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What was highlighted by the Tristan de Cunha case regarding diet and dental health?
What was highlighted by the Tristan de Cunha case regarding diet and dental health?
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Flashcards
Fermentable Carbohydrate
Fermentable Carbohydrate
Carbohydrates that can be metabolized by bacteria to produce acids.
Intrinsic Sugars
Intrinsic Sugars
Naturally occurring sugars found in unprocessed foods, packaged intracellularly.
Extrinsic Sugars
Extrinsic Sugars
Sugars not bound within a cellular structure, often found in processed foods.
Cariogenic
Cariogenic
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Critical pH
Critical pH
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Simple Sugars
Simple Sugars
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Complex Carbohydrates
Complex Carbohydrates
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Demineralization
Demineralization
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Dental Caries
Dental Caries
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Aetiology of Dental Caries
Aetiology of Dental Caries
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Four Aetiological Factors
Four Aetiological Factors
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Microbial Deposits
Microbial Deposits
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Reversible Caries
Reversible Caries
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Dental Plaque
Dental Plaque
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Prevention of Dental Caries
Prevention of Dental Caries
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Treatment of Dental Caries
Treatment of Dental Caries
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Critical pH for enamel
Critical pH for enamel
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Stephan Curve
Stephan Curve
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Frequency of Acid Attacks
Frequency of Acid Attacks
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Caries-causing Bacteria
Caries-causing Bacteria
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Anaerobic Bacteria
Anaerobic Bacteria
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Plaque Biofilm
Plaque Biofilm
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Lactic Acid Production
Lactic Acid Production
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Mutans Streptococci
Mutans Streptococci
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Caries Frequency Rule
Caries Frequency Rule
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Vipeholm Study
Vipeholm Study
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Calcium Ion Movement
Calcium Ion Movement
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Caries Aetiology
Caries Aetiology
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Susceptible Tooth Surface
Susceptible Tooth Surface
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Plaque Bacteria
Plaque Bacteria
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Localized Chemical Dissolution
Localized Chemical Dissolution
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Dental Biofilm
Dental Biofilm
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Susceptible Areas
Susceptible Areas
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Metabolic Activity
Metabolic Activity
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Study Notes
Aetiology of Dental Caries
- Dental caries is a localized, chemical dissolution of a tooth surface, caused by metabolic activity in plaque biofilm.
- Dental caries is a progressive disease of the hard tissues (enamel, dentine, and cementum) and is reversible in the early stages.
- Key factors contributing to dental caries are: susceptible tooth surface, fermentable carbohydrates, and plaque bacteria.
Learning Outcomes
- Understand the aetiology (cause) and pathogenesis (development) of oral diseases.
- Recognize psychological and sociological factors impacting poor oral health and treatment success.
- Explain the significance of each stage in the patient assessment process.
- Explain the role of a dental therapist in tooth restoration.
- Define what dental caries is.
- Explain the aetiology of dental caries.
- List and describe 4 aetiological factors leading to dental caries.
- List the evidence supporting identified aetiologies.
Reasons for Tooth Loss
- Periodontal disease
- Trauma
- Elective procedures
- Caries
Burden of Dental Caries
- Average cost of a tooth extraction in hospital for a child under 5 is £836.
- £50.5 million was spent on tooth extractions for those under 19 in 2015-2016.
- £7.8 million was spent on tooth extractions for those under 5 in the same period.
Preventing Dental Caries and Treating It
- Preventative and treatment strategies for reducing caries are dependent on understanding the process.
What is the Caries Process?
- A localized, chemical dissolution of a tooth surface brought about by metabolic activity within a microbial deposit (a biofilm) covering the affected surface area.
- Dental caries are described in terms of their signs and symptoms, and a localized chemical dissolution of tooth surfaces by metabolic events happening within the biofilm (dental plaque).
- The process is caused by the actions of bacteria on fermentable carbohydrates.
Main Points
- Involves chemicals.
- Involves microbes and their metabolites.
- Involves dissolution.
- Affects all hard tissue.
- Often localized.
- Can be reversible.
- Involves fermentable carbohydrates.
Etiological Agents for Caries
- Susceptible tooth surface
- Plaque bacteria
- Fermentable carbohydrate
- Time
All Encompassing Definition
- A localized, chemical dissolution of a susceptible tooth surface over time brought about by metabolic activity on fermentable carbohydrates in a microbial deposit (a dental biofilm) covering the tooth surface.
True Extent
- Factors influencing caries development include social class (saliva flow rate), education, diet (composition and frequency), microbial species, behavior and attitudes.
- Saliva flow rate and its effect on the acid environment and mineral dissolution and remineralisation are important in the caries development process.
Susceptible Tooth Surface
- All dental hard tissues are susceptible to some degree of caries.
- Some areas are more susceptible than others, including pits and fissures, smooth surfaces, and proximal surfaces.
- Susceptible areas often have factors that increase their ability to accumulate plaque biofilm.
Fermentable Carbohydrate
- Bacteria need food to survive, and sugars present in the diet provide a substrate for oral commensal bacteria to metabolize and produce lactic acid.
- Simple sugars (glucose, fructose, sucrose) are rapidly metabolized and produce acid, they are considered cariogenic.
- Complex carbohydrates are not completely digested in the mouth and are less cariogenic.
- Intrinsic sugars are naturally occurring sugars found in whole foods, like fruit and vegetables
- Extrinsic sugars are not bound within a cellular structure, some are glucose, sucrose, lactose, fructose.
Bacteria + Simple Sugars = Acid
- Bacteria metabolizing simple sugars produce acid.
- Critical pH is the point below which tooth tissue starts losing mineral to saliva or plaque.
Critical pH
- Critical pH of enamel is 5.5.
- Critical pH of dentine is 6.5.
Time
- Time is a significant factor in caries development.
- Frequent exposure to fermentable carbohydrates leads to more time below the critical pH, increasing demineralization risk.
- Infrequent intake allows for remineralization to happen, lowering caries risk.
Evidence for the Caries Process
- Experiments with germ-free animals and those fed a sugar-free diet demonstrated the necessity of bacteria and fermentable carbohydrates for caries to develop.
- The Vipeholm study (1945–1952) showed a correlation between cariogenic food frequency, quantity, and the development of caries.
- Further studies on populations with limited access to cariogenic foods and beverages have also confirmed the role of the other factors in developing caries.
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Description
This quiz explores the causes and development of dental caries, a prevalent oral disease. Participants will learn about the contributing factors, the significance of patient assessment, and the role of dental therapists. Improve your understanding of the pathological aspects of dental health.