All Free Oral Pathology and Medicine MCQs with Answers

• A. Sjogren's disease
• B. Felty's syndrome
• C. Ankylosing spondylitis
• D. Scleroderma

Explanation: HLA-B27 is strongly associated with ankylosing spondylitis and other seronegative spondyloarthropathies.

• A. Assessment of root dentin translucency
• B. Amino acid racemisation
• C. Evaluation of tooth cementum annulations
• D. Pulp to tooth ratio of canines

Explanation: The pulp-to-tooth ratio of canines can be assessed radiographically, making it a non-destructive method of adult age estimation.

• A. Rheumatic Heart Disease
• B. Coronary Heart Disease
• C. Cardiac Pacemakers
• D. Hypertensive Heart Disease

Explanation: Rheumatic heart disease has traditionally been included among cardiac conditions needing infective endocarditis prophylaxis before…

• A. Leukopenia
• B. Osler's disease
• C. Mediterranean disease
• D. Aplastic anaemia

Explanation: Osler disease, or polycythemia vera, is a myeloproliferative disorder producing an absolute increase in red-cell mass and total blood…

• A. Dental extractions
• B. Intracanal endodontic treatment
• C. Initial placement of orthodontic brackets
• D. Periodontal procedures

Explanation: Routine placement of orthodontic brackets does not usually involve significant bleeding or manipulation of gingival tissue, so prophylaxis…

• A. X-linked dominant trait
• B. Autosomal dominant
• C. Autosomal recessive
• D. X-linked recessive

Explanation: Chediak-Higashi syndrome is caused by an inherited lysosomal trafficking defect and follows an autosomal recessive pattern.

• A. Purpura
• B. Hemophilia
• C. Polycythemia
• D. Thalassemia

Explanation: Thalassemia has a marked geographic and racial predilection, being more common in people of Mediterranean, Middle Eastern, African and…

• A. Gallium 67 (67 Ga)
• B. Technetium-99m linked to Methylene disphosonate (99m Tc-MDP)
• C. Technetium-99m (99m Tc)
• D. Technetium-99m (99m Tc-Sc)

Explanation: Technetium-99m labelled methylene diphosphonate concentrates in areas of active bone formation and is therefore highly useful for skeletal…

• A. Decreased absolute basophil count
• B. Increased absolute eosinophil count
• C. Decreased absolute neutrophil count
• D. Increased absolute monocyte count

Explanation: Agranulocytosis is defined by a severe reduction in circulating neutrophils, so the absolute neutrophil count is markedly decreased.

• A. There is severe anaemia and thrombocytopenia
• B. There is erythrocyte fragility and hemolysis
• C. Hypochromic microcytic anaemia is present
• D. Increased in number of globulin chain

Explanation: Thalassemia results from reduced synthesis of one globin chain, producing an imbalance rather than a general increase in globin-chain…

• A. Pagets disease
• B. Sickle anemia
• C. Cooley's anaemia
• D. Thalassemia

Explanation: The hair-on-end skull appearance results from marrow expansion and is classically seen in thalassemia, Cooley anaemia and sometimes severe…

• A. Normal bleeding time normal clotting time
• B. Normal bleeding time prolonged clotting time
• C. Prolonged bleeding time normal clotting time
• D. Prolonged bleeding time prolonged clotting time:

Explanation: Haemophilia is a coagulation-factor deficiency, so clot formation is delayed and the clotting time is prolonged.

• A. Marfan's syndrome
• B. Meckels syndrome
• C. Plummer-vinson
• D. sjogren's syndrome

Explanation: Plummer-Vinson syndrome combines iron-deficiency hypochromic microcytic anaemia, dysphagia from an oesophageal web and atrophic mucosal…

• A. Pinpoint petechiae on the palate
• B. Pseudomembrane on gingiva
• C. Bluish red spots opposite maxillary molar
• D. Gingival hyperplasia

Explanation: The common oral finding in infectious mononucleosis is petechial haemorrhage, especially on the junction of the hard and soft palate.

• A. Ameloblastoma
• B. Leukemia
• C. Fibrosarcoma
• D. Basal cell carcinoma

Explanation: Chemotherapy is a major treatment for leukaemias because malignant blood-forming cells are systemically distributed and respond to…

• A. Acanthosis
• B. Hypertrophy
• C. Atrophy
• D. All of the above

Explanation: Iron deficiency in Plummer-Vinson syndrome causes thinning and atrophy of the mucosal epithelium, which contributes to its precancerous…

• A. Hemolytic anemia
• B. Megaloblastic anemia
• C. Thrombocytopenia
• D. Aplastic anemia

Explanation: Drug-induced aplastic anaemia is particularly dangerous because bone-marrow failure reduces red cells, white cells and platelets…

• A. All of the above
• B. Obtain WBC count
• C. Obtain platelet count
• D. Consult physician

Explanation: Before extracting a tooth from a patient with leukaemia, the physician should be consulted and the white-cell and platelet counts checked…

• A. Chromosomal deletion
• B. Chromosomal mutation
• C. Chromosomal translocation
• D. None of the above

Explanation: Chronic granulocytic, or myeloid, leukaemia is characteristically associated with the Philadelphia chromosome, produced by a reciprocal…

• A. Enlarged tongue
• B. Focal marrow expansion
• C. Generalized osteolysis
• D. Atrophic glossitis

Explanation: Nutritional anaemias commonly produce a smooth, sore tongue with loss of papillae, called atrophic glossitis, especially in iron or…