A dental nurse encounters the notation 'tooth 75' on a chart and is uncertain whether it refers to a primary or a permanent tooth. What is the most appropriate course of action?
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AAssume the tooth belongs to the permanent dentition
BConfirm which tooth-numbering system is in use
CDocument it as a lower right permanent molar
DDisregard the number and continue with treatment
EConvert the notation to the universal numbering system
✓ Correct answer: B. Confirm which tooth-numbering system is in useFDI quadrants 5 through 8 are assigned to the primary dentition, so verifying the numbering system in use is essential for correct tooth identification.
Why the other options are incorrect:
• Assume the tooth belongs to the permanent dentition: Defaulting to permanent dentition without verification could result in treating the wrong tooth.
• Document it as a lower right permanent molar: Tooth 75 belongs to the primary dentition, making it incorrect to record it as a permanent molar.
• Disregard the number and continue with treatment: Proceeding while ignoring the numbering introduces a significant risk of clinical error.
• Convert the notation to the universal numbering system: Changing to a different numbering system without agreement from the treating clinician is inappropriate.
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Theory