Board Exam MCQs on Oral Manifestations of Systemic Diseases

A 7-year-old child is evaluated for delayed eruption of several permanent teeth. Delayed eruption is a recognized feature of all of the following conditions EXCEPT:

A 5-year-old child presents with chronic nocturnal enuresis, marked thirst, and repeated requests for water during the night. Intraoral examination reveals bilateral mobility of the primary first molars, and imaging demonstrates destructive jaw lesions. Which diagnosis is most likely?

A child has premature loss and mobility of primary teeth because of poor mineralization of the supporting alveolar bone. Investigation identifies an inherited deficiency of an enzyme involved in phosphate metabolism. Which condition is most likely?

A middle-aged patient reports diffuse bone pain and muscle weakness. Findings indicate defective mineralization of newly formed bone matrix, while osteoid production is relatively preserved. This condition is best described as:

A nutrition assessment is performed in a patient with multiple vitamin deficiencies. Which vitamin deficiency is least directly associated with disturbances in tooth development?

A child with severe vitamin A deficiency develops abnormalities during odontogenesis. Which developing tooth structure is classically considered particularly vulnerable to this deficiency?

A patient presents with fatigue, weight loss, hyperpigmentation, and postural hypotension. The disorder is caused by insufficient production of adrenal cortical hormones. Addison disease primarily involves the:

A patient with scurvy presents with swollen, bleeding gingiva and impaired wound healing. Which oral tissue is least directly affected by vitamin C deficiency compared with the other listed structures?

A 24-year-old man presents with progressive mobility of teeth limited to one quadrant. Imaging reveals irregular alveolar bone destruction, and biopsy shows a proliferation of histiocytes and eosinophils. Which diagnosis is most likely?

An adult patient develops progressive mandibular enlargement, increased mandibular length, and widening of the interdental spaces. The facial changes are associated with excess secretion of growth hormone. Which condition is most likely?

A patient with a nutritional deficiency develops abnormalities involving salivary gland enlargement and increased keratinization of salivary gland ducts. Which deficiency is most closely associated with these changes?

A child with a history of nutritional deficiency presents with developmental defects in the enamel of multiple teeth. Which combination of deficiencies is most strongly associated with enamel hypoplasia?

An adult patient with longstanding growth hormone excess has coarse facial features, mandibular enlargement, and an enlarged tongue. Which oral finding is characteristic of acromegaly?

A patient presents with swollen, friable, and bleeding gingiva due to a nutritional deficiency. Deficiency of which vitamin most characteristically produces this periodontal manifestation?

A patient presents with a magenta-colored tongue, angular cracks at the corners of the mouth, and mucosal soreness. Which nutritional deficiency is most likely?

A child presents with destructive jaw lesions, excessive thirst and urination, and protrusion of the eyes. Which systemic disorder classically presents with this combination?

Historically, histiocytosis X was described as a spectrum of disorders involving abnormal Langerhans cells. Which set of conditions belongs to this spectrum?

A child with a lysosomal storage disorder develops coarse facial features, skeletal abnormalities, and generalized enlargement of the tongue. Which condition can produce macroglossia?

A child presents with delayed eruption of teeth but no characteristic enamel hypoplasia. Which systemic condition is most consistent with a disturbance primarily involving tooth formation timing and eruption?

A young child experiences premature exfoliation of multiple deciduous teeth because of defective bone and dental mineralization caused by an inherited enzyme abnormality. Which diagnosis is most likely?

A patient with primary hyperparathyroidism undergoes maxillofacial imaging that demonstrates generalized reduction in bone density and localized expansile radiolucent lesions. Which combination represents recognized skeletal changes of hyperparathyroidism?

A biopsy is taken from a destructive jaw lesion in a child. The lesion is diagnosed as eosinophilic granuloma, a localized form of Langerhans cell histiocytosis. The principal proliferating cells are:

A child presents with periorificial dermatitis, diarrhea, alopecia, and poor wound healing. Laboratory evaluation identifies a trace-element deficiency. Which deficiency causes acrodermatitis enteropathica?

A child with prolonged vitamin D deficiency develops defective mineralization of dental tissues. Which finding is NOT typically associated with vitamin D deficiency?

A child presents with delayed eruption of permanent teeth, altered resorption of primary teeth, and macroglossia. Which systemic disorder best explains this combination?

A patient with longstanding parathyroid hormone excess undergoes dental radiography. The lamina dura around several teeth is indistinct or absent because of increased bone turnover. This finding is most associated with:

A patient develops painful carpopedal spasms and perioral tingling. Laboratory testing demonstrates a low concentration of ionized calcium in the serum. Which clinical condition is most directly associated with this biochemical abnormality?

A 50-year-old obese man presents with recurrent gingival abscesses, tooth mobility, pruritus, and polyuria. Which underlying systemic disease is most likely contributing to his oral and systemic findings?

A patient with hyperparathyroidism develops an expansile jaw lesion. Histopathology reveals numerous multinucleated giant cells within a hemorrhagic, fibrovascular stroma. This finding is characteristic of:

A patient reports diffuse bone pain and has a history of recurrent renal stones, pathologic fractures, and cystic-appearing bone lesions. Which systemic disorder is most consistent with this presentation?

A patient presents with a beefy-red, painful tongue and other signs of pellagra, including dermatitis and diarrhea. Which deficiency is most likely responsible?

A child presents with fever, skin lesions, anemia, and destructive bone lesions. The condition historically called Letterer–Siwe disease is classified as a:

An adult patient with excess growth hormone develops enlargement of the jaws and facial bones. Which endocrine condition is associated with macrodontia or an apparent increase in tooth size?

A patient with a metabolic disorder has photosensitivity and reddish fluorescence associated with abnormal porphyrin accumulation. In which condition may red fluorescent material be observed?

A young male presents with hypogonadism, delayed development, and reduced taste and smell. A trace-element deficiency is suspected. Which element is most likely deficient?

A patient presents with swollen joints, anemia, tooth mobility, and defective dentin development. Which nutritional deficiency is most classically associated with anemia and loose teeth due to impaired collagen formation?

A patient has poor mineral absorption and is found to consume a diet high in whole grains and unprocessed cereals. Which substance can reduce intestinal calcium absorption by binding calcium?

A patient with primary hyperparathyroidism develops an expansile, reddish-brown giant-cell-rich lesion in the jaw. Brown tumors are most strongly associated with:

A 65-year-old man presents with anemia, persistent back pain, and multiple punched-out radiolucencies on panoramic imaging. Which diagnosis is most likely?

A laboratory report lists the expected total serum calcium concentration in a healthy adult. Which range is closest to the normal value?

A patient is being assessed for disorders that produce pigmentation of the oral mucosa and skin. Which condition is least classically associated with this combined pigmentation pattern?

A patient with suspected primary hyperparathyroidism undergoes skull and dental radiography. Which combination of radiographic findings is associated with hyperparathyroidism?

A patient presents with paresthesia, impaired proprioception, and megaloblastic anemia. Which vitamin deficiency is most strongly associated with neurological complications?

A patient has reduced intestinal calcium absorption despite adequate dietary calcium intake. Which substance does NOT typically reduce calcium absorption through mineral binding or complex formation?

A 9-year-old child presents with premature loss of primary teeth, horizontal anterior alveolar bone loss, and reduced cementum formation. Urinalysis demonstrates increased phosphoethanolamine excretion. Which diagnosis is most likely?

An adult patient with growth hormone excess has mandibular enlargement, increased interdental spacing, and an enlarged tongue. Which finding may be a feature of acromegaly?

A patient presents with confusion, ataxia, ophthalmoplegia, and a history of severe malnutrition. Which deficiency is responsible for Wernicke encephalopathy?

A patient develops hepatic dysfunction, neurological changes, and Kayser–Fleischer rings due to a hereditary disorder of copper metabolism. The condition involves deposition of:

An older adult develops progressive mandibular enlargement and widening of interdental spaces due to excessive growth hormone activity. Which diagnosis best explains the findings?

A child with Hurler syndrome has coarse facial features, skeletal abnormalities, and intracellular metachromatic inclusion material. Reilly bodies are classically described in which cells?

A patient is evaluated for disorders associated with increased pigmentation of the skin and oral mucosa. Which condition is least classically associated with this finding in standard oral pathology teaching?

A child presents with defective mineralization of dentin. Histology shows widespread globular hypocalcified dentin and pulp horns extending toward the dentinoenamel junction; radiographs show loss of the lamina dura. Which diagnosis is most likely?

A patient presents with fatigue, weight loss, hypotension, and diffuse brown pigmentation of the oral mucosa. Which statement about Addison disease is correct?