General Dental Surgery - Core Concepts for the RCSI Examination
Scope and approach
General Dental Surgery questions test whether you can reason from first principles across the whole mouth rather than recite a single specialty. The recurring themes are diagnosis, treatment planning, safe operative practice, and recognition of when to refer. Because the official domain structure is not published in the source material, treat this section as a broad scaffold: it names the concepts most likely to be examinable and the traps that commonly cost marks.
Concepts you must understand
History and examination. Structure your answer as chief complaint, history of presenting complaint, medical and drug history, social history (smoking, alcohol, diet, oral hygiene), then extraoral and intraoral examination. Questions often hide a red flag in the medical history - anticoagulants, bisphosphonates, uncontrolled diabetes, valvular disease, or immunosuppression - that changes the plan.
Diagnosis and investigations. Know when radiographs, vitality testing, transillumination, or biopsy are indicated. Understand the difference between a diagnosis and a differential; examiners reward candidates who state the most likely diagnosis and then justify it.
Operative principles. Cavity design, moisture control, matrixing, and restoration selection follow from the lesion and the patient, not from habit. Local anaesthetic maximum doses by weight are frequently tested.
Traps. Absolute statements ('always', 'never') are usually wrong. Distinguish reversible from irreversible pulpitis, and gingivitis from periodontitis. Do not confuse a periapical radiolucency with a cyst without histology. Watch for questions asking for the next step rather than the definitive treatment.
Rule of thumb
If a question describes a patient with a systemic condition and a dental procedure, first ask: does the condition or its medication alter bleeding, healing, infection risk, or drug interactions? That single question resolves most such items.
Worked example
A patient on warfarin with a stable INR of 2.5 needs a simple extraction. The safe answer is to check the recent INR, ensure it is within therapeutic range, use local measures such as sutures and haemostatic agents, and avoid stopping the anticoagulant without medical liaison.