ADC Practice Question — CMS Risk Assessment & Classification

Which CMS principle resolves this?

Prevention and cariology questions test evidence-based decision-making — fluoride protocols, caries risk assessment, recall scheduling. This exam-level vignette tests your ability to work through clinical details and arrive at the correct management.

A 9-year-old has dmfs + DMFS = 0, no white spots, no radiolucencies, no PI = 3 sites. Both upper permanent first molars show yellow-brown opacities with post-eruptive enamel breakdown consistent with Molar Hypomineralization. A colleague argues this child should be Low risk because his sugar intake is minimal and he brushes well. Which CMS principle resolves this?

A. Protective factors should be weighted equally with clinical presentation at every visit
B. Low sugar intake overrides clinical signs when dmfs equals zero
C. Plaque quality modifies the risk category downward by one level
D. Risk is determined solely by clinical signs, not exposure to risk factors

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Sources cited

Therapeutic Guidelines v4 Odell's 3rd & 4th Ed IADT 2020 Code of Conduct CMS (Evans) Infection Control + more

Show the answer and cited explanation

Correct answer: D

CMS principle: risk 'determined solely on an analysis of the severity and extent of presenting clinical and radiographic signs and not from epidemiologic-type considerations.' Exposures are explored to identify causes but do not dictate the category. SOURCE — Evans RW, Dennison PJ. CMS for children, ADJ 2009;54:381-389, p.384

Source: Evans RW, Dennison PJ. CMS for children, ADJ 2009;54:381-389, p.384

Remy's study tip — Identify the patient’s risk level first, then match the intervention to the risk.

Exam preparation FAQ

How should I prepare for Preventive Dentistry & Cariology in the ADC exam?

Build competence across all topics. The exam tests application of guidelines to clinical scenarios, not memorisation.

How do I approach an unfamiliar CMS Risk Assessment & Classification vignette?

Extract key clinical data from the stem before reading options. There are usually 3–4 critical variables that determine the correct answer.

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