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BDS2 OSCE Prep - Caries Symposium Notes
This flashcard deck covers key concepts related to dental plaque, caries progression, restoration classifications, caries risk, and prevention strategies as discussed in the BDS2 OSCE Prep - Caries Symposium Notes.
what is dental plaque?
a diverse microbial community found on the tooth surface, embedded in a matrix of polymers of bacterial & salivary origin
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Key Terms
Term
Definition
what is dental plaque?
a diverse microbial community found on the tooth surface, embedded in a matrix of polymers of bacterial & salivary origin
what are Dental Caries?
Decay of dental tissues caused by demineralisation, bacterial/pathogenic infiltration and breakdown of tissues.
what are the steps of caries progression in a tooth?
adhesion of bacteria survival and growth biofilm formation complex plaque acid caries
what components are necessary for progression of dental caries?
susceptible tooth surface sugar acid time
what acid is formed when bacteria found in plaque interacts with sugar?
lactic acid is formed (pH 3.5)
what is the ‘critical pH’ dentist talk about in regards to caries initiation?
when pH drops below 5.5, demineralisation of tooth surfaces begins
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| Term | Definition |
|---|---|
what is dental plaque? | a diverse microbial community found on the tooth surface, embedded in a matrix of polymers of bacterial & salivary origin |
what are Dental Caries? | Decay of dental tissues caused by demineralisation, bacterial/pathogenic infiltration and breakdown of tissues. |
what are the steps of caries progression in a tooth? | adhesion of bacteria survival and growth biofilm formation complex plaque acid caries |
what components are necessary for progression of dental caries? | susceptible tooth surface sugar acid time |
what acid is formed when bacteria found in plaque interacts with sugar? | lactic acid is formed (pH 3.5) |
what is the ‘critical pH’ dentist talk about in regards to caries initiation? | when pH drops below 5.5, demineralisation of tooth surfaces begins |
how does fluoride in toothpastes help demineralised teeth? | becomes incorporated into the enamel by forming fluoroapetite |
How can a class I restoration be described? | cavity in pits or fissures of molars & premolars - lingual surfaces of maxillary incisors |
How can a class II restoration be described? | cavity on proximal surfaces of premolars and molars |
How can a class III restoration be described? | cavity involving the interproximal surfaces of anterior teeth (not involving incisal edge) |
How can a class IV restoration be described? | carious lesion involving the interproximal regions of anterior teeth as well as the incisal edge |
How can a class V restoration be described? | carious lesion affecting the cervical third of the tooth (both anterior or posterior) |
You spot what you believe to be a carious lesion, how do you determine if it is active or non-active? | soft, light brown appearance = ACTIVE - hard, dark brown, shiney appearance = ARRESTED |
You spot a white-spot carious lesion in a patients mouth, what is it essential that you AVOID doing? | Do not investigate with a sharp probe, you may cause trauma to the lesion leading to cavitation. |
When investigating potentially non-cavitated carious surfaces what instrument would be appropriate to use? | BPE probe (ball on end helps to avoid trauma to lesion) |
what are primary caries? | carious lesions developed on intact, natural tooth surfaces |
what are secondary caries? | Carious lesions occurring as a result of an existing restoration |
what are the seven elements for caries risk? | clinical evidence fluoride use social history dietary habits plaque control saliva medical history |
what is meant by DMFT/dmft? | Decayed missing and filled teeth (capitals = adult, lowercase = child) - highlights a patients caries risk |
what DMFT score indicates that a patient is high risk? | 5 and up |
You ask a patient to complete a diet diary, upon reading it you notice that they have 3 separate sugar intakes in a normal day. What does this mean? | The patient is a HIGH CARIES RISK - provide diet advice and explain that they should try and keep sugar intakes to minimum |
what are the eight elements of caries prevention? | radiographs fluoride toothpaste toothbrushing fluoride varnish fluoride supplementation fissure sealants diet advice sugar free medicine |
what are white-spot lesions? | demineralisation of enamel |