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187-287

Terms in this set (89)

187. In which of the following conditions is there a risk of malignant change after radiotherapy?
A. Fibrous dysplasia.
B. Mucocele.
C. Lymphangioma.
D. Torus palatinus.
A. Fibrous dysplasia.
Which of the following is/are associated with the presence of microorganisms in the bloodstream?
A. Anachoresis.
B. Cavernous sinus thrombosis
.C. Bacteremia.
D. All of the above.
D. All of the above.


anchorets if when there is something like and infection in the blood it can circle to the tissue and cause inflammation

cavernous sinus thrombosis blood clot
Which of the following can result in post-developmental jaw growth?A. Hyperparathyroidism.
B. Hyperthyroidism.
C. Adult hypothyroidism.
D. Osteitis deformans (Paget's).
E. Hypoparathyroidism.
D. Osteitis deformans (Paget's).
Biopsy of a recent solitary painless ulcer on the lip ina 20 year old patient shows the presence of Treponema pallidum. The ulcer is called
A. lupus vulgaris.
B. facies leprosa.
C. chancre.
D. noma.
C. chancre.
Dentigerous cysts should be completely enucleated
because
A. the epithelium of the cyst can degenerate and form toxic substances.
B. the epithelial lining of the cyst has the potential for neoplastic change.
C. the connective tissue of the cyst wall can become osteoblastic.
D. continued growth is likely to result in a supernumerary tooth.
B. the epithelial lining of the cyst has the potential for neoplastic change.
Which of the following conditions is NOT a sequela ofa tooth completely impacted in bone?
A. Development of a dentigerous/follicular cyst around its crown.
B. External resorption of the tooth.
C. Osteonecrosis of the adjacent bone.
D. Development of a benign neoplasm adjacent to its crown.
C. Osteonecrosis of the adjacent bone.
Periradicular odontogenic cysts are primarily associated with
A. impacted wisdom teeth.
B. congenitally missing teeth.
C. nonvital teeth.
C. nonvital teeth.
The term used to describe epithelial changes including nuclear hyperchromatism, alteration of nuclear/cytoplasmic ratio and abnormal mitoses is
A. acanthosis.
B. hyperparakeratosis.
C. dysplasia.
D. acantholysis.
C. dysplasia.
Cleft palate may result in a higher incidence of
1. supernumerary teeth.
2. congenitally missing teeth.
3. altered crown morphology.
4. orthognathic surgery.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
E. All of the above.
A patient presents with a non-healing lesion on the side of the nose. It has a rolled border and has been increasing in size. The most likely diagnosis is
A. a sebaceous cyst.
B. a basal cell carcinoma
C. lupus erythematosus.
D. verruca vulgaris.
E. an epulis.
B. a basal cell carcinoma.a
A 60 year old patient presents with lingual erosion of the maxillary incisors. The most likely cause is
A. alcoholism.
B. ulcerative colitis.
C. diabetes mellitus.
D. mitral valve prolapse.
E. rheumatoid arthritis.
A. alcoholism.
Chronic disseminated Langerhans cell disease
A. produces a solitary eosinophilic lesion.
B. produces bony defects as focal areas of bony rarefaction.
C. occurs only in adult life.
D. is a malignant lesion.
its not just one eosinophilic lesion
occurs in children

B. produces bony defects as focal areas of bony rarefaction.
What is the most probable syndrome affecting a 9 year old patient with a history of 3 keratocystic odontogenic tumours?
A. Nevoid basal cell carcinoma syndrome (Gorlin Syndrome).
B. Familial colorectal polypons (Gardner's Syndrome).
C. Crouzon Syndrome.
D. Apert Syndrome.
A. Nevoid basal cell carcinoma syndrome (Gorlin Syndrome).
Which of the following tests is/are specific in thediagnosis of anemia?
A. A complete blood count.
B. Measuring the concentration of hemoglobin.
C. White cell count and hematocrit determination.
D. Hematocrit determination, hemoglobin concentration and redcell count.
D. Hematocrit determination, hemoglobin concentration and redcell count.
The presence of more than 104 copies/mL ofhepatitis B DNA in blood is indicative of
A. a past exposure to hepatitis B with immunity.
B. recovery from hepatitis B with liver damage.
C. a highly infectious individual
.D. an inconclusive immune status.
C. a highly infectious individual
Which of the following is necessary to make a diagnosis of an odontogenic keratocyst (keratocystic odontogenic tumour)?
A. Aspiration cytology.
B. Exfoliative cytology.
C. Radiographic examination alone.
D. Histopathologic examination.
D. Histopathologic examination.
A 35 year old female patient has multiple petechial hemorrhages of the palatal mucosa and ecchymoses of the right and left buccal mucosae. Which of thefollowing is the most likely laboratory finding?A. Anemia.
B. Prolonged PTT.
C. Elevated INR.
D. Thrombocytopenia.
D. Thrombocytopenia.
Multiple radiolucent lesions of the jaws are features of
1. hyperparathyroidism.
2. multiple myeloma.
3. basal cell nevus syndrome.
4. hyperthyroidism.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only.
E. All of the above.
A. (1) (2) (3)
What is the most likely diagnosis of a white lesion on the retro molar pad opposing a non-functional molar?
A. Alveolar ridge keratosis.
B. Candidiasis.
C. Lichen planus.
D. Squamous cell carcinoma.
A. Alveolar ridge keratosis.
The most common location for periapical cemento-osseus dysplasia is the
A. maxillary anterior region.
B. mandibular anterior region.
C. mandibular premolar region.
D. maxillary posterior region.
B. mandibular anterior region.
Periapical cemental dysplasia is
A. painful.
B. expansile.
C. associated with vital teeth.
D. premalignant.
C. associated with vital teeth.
The most commonly impacted permanent tooth is the
A. mandibular second premolar
.B. maxillary lateral incisor
.C. mandibular canine.
D. maxillary canine.
D. maxillary canine.
In which condition will the histological picture include "characteristic sheets of histiocytes together with variable number of eosinophils"?
A. Paget's disease.
B. Fibrous dysplasia.
C. Histiocytosis X.
D. Osteosarcoma.
E. Acute leukemia.
C. Histiocytosis X.

Langerhan
Mucosal thickening in the maxillary sinus
1. may fill the entire air space of the sinus.
2. is often usually an incidental radiographic finding
3. may be caused by a periapical infection.
4. may be associated with nasal discharge.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
E. All of the above.
In mucous membrane pemphigoid, a positive Nikolsky sign is the result of a/an
A. separation at the basement membrane.
B. intraepithelial separation.
C. separation of the lamina propria and submucosal.
D. intraepithelial bulla formation.
A. separation at the basement membrane.
A 27 year old woman complains of burning mouth, fatigue, palpitations and lack of energy.An oral exam shows angular cheilitis and atrophic glossitis. What is the most likely diagnosis?
A. Iron deficiency anemia.
B. Crohn's disease.
C. Chronic lymphocytic leukemia.
D. Vitamin B deficiency.
A. Iron deficiency anemia.
most likely
palpitations working more because of anemia
A 19 year old female (with otherwise healthy dentition) presents with erosion of the lingual surfaces of all maxillary anterior teeth. This is most likely caused by
A. xerostomia.
B. occlusal parafunction.
C. diet high in citrus fruit.
D. bulimia.
D. bulimia.
Acute or subacute suppurative osteomyelitis occurs most frequently in the
A. anterior maxilla.
B. posterior mandible.
C. posterior maxilla.
D. anterior mandible.
B. posterior mandible.
The principal reason for a needle aspiration biopsy of an intraosseous radiolucent lesion of the mandible is to
A. obtain a specimen for histopathological analysis.
B. determine the presence of a vascular lesion.
C. decompress a fluid-filled lesion.
D. drain purulent material.
B. determine the presence of a vascular lesion.
The most common benign tumour of the salivary glands is a/an
A. Warthin's tumour.
B. pleomorphic adenoma.
C. canalicular adenoma.
D. mucocele.
B. pleomorphic adenoma.
The oral mucosal lesions of lichen planus,leukoplakia, hyperkeratosis and discoid lupus erythematosus have at least one common feature.They are
A. premalignant.
B. hyperkeratotic.
C. due to chronic infection.
D. granulomatous proliferations.
E. associated with drug use.
B. hyperkeratotic.
A mucocele results from
A. aplasia of the duct.
B. hyperplasia of the duct.
C. damage to the duct.
D. hypersecretion.
C. damage to the duct.
A patient must push up on his mandible to close his mouth. The most likely cause is
A. Bell's palsy.
B. muscular dystrophy.
C. multiple sclerosis.
D. necrotizing fasciitis.
E. myasthenia gravis.
E. myasthenia gravis.
A 60 year old patient in chronic renal failure presents with bilateral radiolucent mandibular lesions.Histological analysis reveals that these are giant cell lesions. This patient should be evaluated for
A. hyperparathyroidism.
B. hyperthyroidism.
C. hyperpituitarism.
D. hypoparathyroidism.
A. hyperparathyroidism.
Odontogenic keratocysts have a/an
A. inflammatory origin.
B. mixed radiopaque/radiolucent appearance.
C. solid consistency.
D. tendency to recur.
D. tendency to recur.
Healing of a recurrent herpes simplex lesion occurs within
A. 7-14 days without scar formation.
B. 7-14 days with scar formation.
C. 2-4 weeks without scar formation.
D. 2-4 weeks with scar formation.
A. 7-14 days without scar formation.
A 50 year old man, who is a heavy smoker, has developed a barrel chest, has difficulty breathing and has a bluish tinge to his complexion. The most likely diagnosis is a
A. emphysema.
B. acute upper respiratory infection.
C. primary cancer of the lung.
D. cardiac insufficiency.
A. emphysema.
An infant has asymptomatic small whitish outgrowths at the junction of the soft palate and hard palate. What is the most likely diagnosis?A. Dental lamina cysts.
B. Epstein pearls.
C. Bohn nodules.
D. Fordyce granules.
C. Bohn nodules.
Which of the following is a proliferative response of the soft tissue to an irritant?
A. Cellulitis
.B. Abscess.
C. Pyogenic granuloma.
D. Apthous ulcer.
C. Pyogenic granuloma.
Which of the following drug groups can cause xerostomia?
1. Diuretics.
2. Antibiotics.
3. Antidepressants.
4. Non-steroidal anti-inflammatory agents.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
B. (1) and (3)
The absence of adequate drainage in a periodontal pocket may result in
A. cyst formation.
B. abscess formation.
C. epithelial hyperplasia.
D. increased calculus formation.
B. abscess formation.
Radiographs of the mandibular incisor teeth of a 45 year old healthy black female patient reveal periapical radiolucencies. The teeth are vital and asymptomatic. You would
A. perform a biopsy of the radiolucent lesion.
B. perform endodontic therapy on the four incisors.
C. place a drain in the affected area.
D. observe periodically.
D. observe periodically.
Trismus is most frequently caused by
A. tetanus.
B. muscular dystrophy
.C. infection.
D. mandibular fracture.
.C. infection.
In primary molars, radiographic bony changes from an infection are initially seen'
A. at the apices
.B. in the furcation area.
C. at the alveolar crest.
D. at the base of the developing tooth.
.B. in the furcation area.
A smooth, elevated, red patch devoid of filiform papillae, located in the midline of the dorsum of the tongue immediately anterior to the circumvallate papillae is indicative of
A. benign migratory glossitis.
B. median rhomboid glossitis.
C. a granular cell tumor
.D. iron deficiency anemia.E. a fibroma.
B. median rhomboid glossitis.
Botulinum neurotoxins cause which type of paralysis?
A. Spastic.
B. Flaccid.
C. Periodic.
D. Brachiofacial.
B. Flaccid.
muscles relaxed
Which valve is most commonly affected by rheumatic heart disease?A. Aortic.
B. Pulmonary
C. Tricuspid.
D. Mitral.
D. Mitral.
• Which of the following is NOT a feature of bruxism?
A. Radiographic evidence of the widening of the periodontalligament.
B. Increased mobility of teeth.
C. Premature wear of occlusal surfaces.
D. Erosion.
D. Erosion.
237. Laboratory examination of the blood of a patient with an acute bacterial infection would show
A. lymphocytosis
.B. leukocytosis.
C. monocytosis.
D. leukopenia.
E. eosinophilia.
.B. leukocytosis.
A 10 year old girl has poorly formed, distorted permanent right maxillary canine, lateral and central incisors. The remaining teeth and supporting structures are unremarkable. The patient most likely has
A. ectodermal dysplasia.
B. segmental odontomaxillary dysplasia.
C. radicular dentin dysplasia.
D. regional odontodysplasia.
E. coronal dentin dysplasia.
D. regional odontodysplasia.
Idiopathic osteosclerosis is
A. painful.
B. found mostly in the maxilla.
C. radiolucent.
D. Non expansile.
D. Non expansile.
Which of the following structures may be associated with the role of the central nervous system in sleep(nocturnal) bruxism?
A. Basal ganglia (nigrostriatal).
B. A delta and C nerves.
C. Sphenopalatine ganglion.
D. Petrous nerves.
A. Basal ganglia (nigrostriatal).
Most cases of erosive oral lichen planus are effectively treated with
A. antifungals.
B. antibacterials.
C. antimalarials.
D. corticosteroids.
D. corticosteroids.
A 75-year old female patient is being treated for oral lichen planus with a topical corticosteroid. She also has low vitamin D. The most likely cause of a reduced alveolar bone mass in this patient is
A. postmenopausal osteoporosis.
B. senile osteoporosis.
C. drug-induced osteoporosis.
D. osteomalacia.
B. senile osteoporosis.
A patient who is jaundiced because of liver disease has an increased risk of
A. post extraction bleeding.
B. cardiac arrest.
C. postoperative infection.
D. anaphylactic shock.
E. pulmonary embolism.
A. post extraction bleeding.
Which of the following is NOT a malignancy?
A. Leukemia.'
B. Lymphoma.
C. Leiomyoma.
D. Melanoma.
C. Leiomyoma.
Which condition produces a radiopaque image?
A. Osteomalacia.
B. Multiple myeloma.
C. Osteopetrosis.
D. Letterer-Siwe disease.
E. Central giant cell granuloma.
C. Osteopetrosis.

over mineralization of bone without resorption

osteomalacia is vit d def
A patient with hyperthyroidism may exhibit
A. weight gain.
B. delayed eruption of teeth.
C. exophthalmos.
D. gingival inflammation.
C. exophthalmos.
Which of the following is LEAST likely to share histological features with lichen planus?
A. White sponge nevus.
B. Oral mucosal cinnamon reaction.
C. Oral graft-versus-host disease.
D. Lupus erythematosus.
A. White sponge nevus.
Diabetes mellitus is the result of
A. hypersecretion of the posterior pituitary.
B. atrophy of the islands of Langerhans.
C. destruction of the adrenal cortex.
D. destruction of the posterior pituitary or associated hypothalamic centres.
B. atrophy of the islands of Langerhans.
Pyogenic granuloma is most frequently found on the
A. tongue.
B. gingiva.
C. buccal mucosa.
D. tonsillar pillars.
E. lips.
B. gingiva.
Low serum levels of parathyroid hormone and vitamin D combined with low bone mass in the skeleton are consistent with the diagnosis of
A. hypoparathyroidism.
B. hypothyroidism.
C. dietary calcium deficiency.
D. postmenopausal osteoporosis.
D. postmenopausal osteoporosis.
with hypo PT there is no bone destruction
Which oral condition predisposes to caries?
A. Xerostomia.
B. Leukoplakia
.C. Pharyngitis.
D. Stomatitis medicamentosa.
A. Xerostomia.
A 13 year old complains of red, bleeding and swollen gums. Clinical examination reveals this is present only on the labial gingiva of the maxillary anterior teeth. What is the most likely etiologic factor?
A. Blood dyscrasia.
B. Insulin-dependent diabetes mellitus.
C. Mouth breathing habit.
D. Pubertal hormones.
C. Mouth breathing habit.
A stone in the salivary glands or ducts is called a
A. sialolith
.B. rhinolith.
C. phlebolith.
D. thrombolith.
A. sialolith
In which salivary gland is a pleomorphic adenoma most frequently found?
A. Parotid.
B. Submandibular.
C. Sublingual.
A. Parotid.
Widening of the periodontal space is NOT seen radiographically in
A. trauma from occlusion.
B. orthodontic tooth movement.
C. scleroderma.
D. Paget's disease.
D. Paget's disease.
obliteration of pal
Which of the following congenital problems often results in a malocclusion?
1. Cleft palate.
2. Ectodermal dysplasia.
3. Pierre Robin syndrome.
4. Cleidocranial dysostosis.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
E. All of the above.
Which of the following are possible causes of Bell's Palsy?
1. Incorrect injection technique.
2. Viral infection.
3. Inflammation of the facial nerve.
4. Surgical trauma.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
E. All of the above.
An 89 year old patient has rampant caries secondary to vestibular food pocketing. The LEAST likelypredisposing disease is
A. Parkinson's.
B. Lewy body dementia.
C. Alzheimer's.
D. Addison's.
D. Addison's.
The absence of lamina dura on a dental radiograph is suggestive of
A. hyperparathyroidism.
B. Paget's disease.
C. hyperthyroidism.
D. vitamin D deficiency.
E. acromegaly.
A. hyperparathyroidism.
Which of the following is/are associated with dentindysplasia type 1?1. Obliteration of pulp chambers.
2. Normal appearance of clinical crowns.
3. Small underdeveloped roots.
4. Periapical radiolucent areas.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
E. All of the above.
A 3 year old patient complains of pain of the mouth and headaches for 24 hours. The clinical exam reveals bilateral painful regional lymphadenopathy and bad breath. Vesicles are seen on the hard palate,the soft palate, the gingiva, the tongue and the lips.The patient's temperature is 38.5°C. What is the most probable diagnosis?A. Erythema multiforme.
B. Herpetic gingivostomatitis.
C. Hand-foot-mouth disease.
D. Herpetiform aphtaus ulcers.
B. Herpetic gingivostomatitis.
Down syndrome is associated with
A. hypertelorism.
B. papular rash.
C. mandibular prognatism.
D. Hutchinson's teeth.
E. macroglossia.
E. macroglossia.
Patients with a history of ankle swelling, shortness of breath and orthopnea are most likely suffering from
A. asthma.
B. emphysema.
C. congestive heart failure.
D. constrictive pericarditis.
C. congestive heart failure.
Cleidocranial dysostosis can be associated with
A. premature loss of teeth.
B. micrognathia.
C. high incidence of clefts.
D. associated high caries index.
E. multiple supernumerary and unerupted teeth.
E. multiple supernumerary and unerupted teeth.
All the following medications can be used for the treatment of Candida albicans EXCEPT
A. nystatin
.B. fluconazole.
C. chlorhexidine.
D. amoxicillin.
D. amoxicillin.
Epstein-Barr virus is associated with which of the following?
1. Shingles.
2. Oral hairy leukoplakia.
3. Chickenpox.
4. Infectious mononucleosis.
A. (1) (2) (3)
B. (1) and (3)
C. (2) and (4)
D. (4) only
E. All of the above.
C. (2) and (4)
Folate deficiency is associated with an increased risk of
A. birth defects.
B. microcytic anemia.
C. low serum homocysteine.
D. elevated high-density lipoprotein cholesterol.
A. birth defects.
Systemic or topical cortisone therapy is used in the treatment of
A. necrotizing ulcerative gingivitis.
B. erythema multiforme.
C. submaxillary cellulitis.
D. ptyalism.
E. herpes simplex.
B. erythema multiforme
• Which of the following is necessary for collagen formation?
A. Vitamin A.
B. Vitamin C.
C. Vitamin D.
D. Vitamin E.
E. Vitamin K.
B. Vitamin C
In addition to iron, calcium and folate, which of the following nutrients is of special concern during pregnancy?
A. Vitamin B12.
B. Pyridoxine.
C. Vitamin D.
D. Ascorbic acid.
A. Vitamin B12.
A smooth-surfaced, solid, exophytic oral mucosal lesion with no colour change is most likely a/an
A. mucocele.
B. papilloma.
C. hemangioma.
D. fibroma.
E. intramucosal nevus.
D. fibroma.
Which of the following is seen in primary herpetic gingivostomatitis, herpes simplex, herpes zoster and varicella?
A. Macules.
B. Papules.
C. Vesicles.
D. Pustules.
C. Vesicles.
If left untreated in a patient who is not pregnant, a pyogenic granuloma will over time most likely
A. shrink.
B. remain unchanged.
C. continue to enlarge.
D. shrink and enlarge cyclically.
A. shrink.
The most likely cause of a cavernous sinus thrombosis is a periradicular abscess of a maxillary
A. first molar.
B. central incisor.
C. second premolar.
D. third molar.
B. central incisor.
Which of the following is characteristic of a maxillary sinus retention cyst/antral pseudocyst?
A. Pain and soreness of the face.
B. Dome-shaped appearance on a radiograph.
C. Buccal expansion of the maxillary sinus.
B. Dome-shaped appearance on a radiograph
A radicular cyst
A. enlarges rapidly.
B. infiltrates bone.
C. contains fluid.
D. cannot cause cortical bone expansion.
E. is associated with a vital tooth.
C. contains fluid.
Which of the following is NOT a risk factor fo rprimary molar ankylosis?
A. Bruxism.
B. Genetics.
C. Trauma.
D. Missing permanent successor.
A. Bruxism.
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