451. Mutation in GNAS 1 gene is associated with________________?
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A. Fibrous dysplasia

B. Ossifying fibroma

C. Focal cementoosseous dysplasia

D. Periapical cementoosseous dysplasia

454. Which of the following is not hereditary________________?
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A. Cleidocranial dysostosis

B. Dentinogenesis imperfecta

C. Regional odontodysplasia

D. Amelogenesis imperfecta

455. Bifid tongue a congenital anomaly occurs due to non-fusion of____________?
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A. The two lateral lingual swellings

B. Tuberculum impar and lateral lingual swellings

C. Some of the above

D. Hypobranhiral eminence and tuberculum impar

456. Clinical evidence of dentinogenesis imperfecta is______________?
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A. Defective dentine and obliterated pulp chamber

B. Increased rate of caries

C. Oligodontia

D. Defective enamel and dentine

457. The histopathology of osteopetrosis shows_______________?
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A. Presence of numerous osteoclasts and a few osteoblasts

B. Periosteal bone formation and lack of normal bone resorption

C. Persence of extra collagen fibres and less calcification resulting in resistance of bones to fracture

D. Endosteal bone formation and lack of normal bone resorption
458. Fothergills disease is one of the synonyms of_______________?
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A. Multiple sclerosis

B. Sarcoidosis

C. Trigeminal neuralgia

D. Lupus erythematosis

460. In a caries-free individual the saliva has_____________?
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A. Medium buffering capacity for acids

B. Independent of buffering capacity for acids

C. low buffering capacity of acids

D. High buffering capacity for acids
461. Easy fatigability of muscles seen in______________?
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A. Epilepsy

B. MPDS

C. Myasthenia gravis

D. Cerebral palsy

463. A 3-year old patient reports of painless progressive bilateral facial swellings. The tentative diagnosis is______________?
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A. Ployostotic fibrous dysplasia

B. Cherubism

C. Central giant cell granuloma

D. Monostotic fibrous dysplasia

464. Intitation of dental caries depends upon_______________?
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A. Viscosity of saliva

B. Formation of large amount of acid

C. Localization of acid over tooth surface

D. Availability of carbohydrate food

466. Ectopic sebaceous glands in the mouth are called________________?
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A. Lingual verices

B. Linea alba buccalis

C. Hecks disease

D. Fordyce spots

467. Absence of pulp chambers is seen in_______________?
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A. Dentinogenesis imperfecta

B. Craniofacial dysostosis

C. None of the above

D. Amelogenesis imperfecta

468. In an acute attack of migraine, the during of choice______________?
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A. Ergontamine tortrate

B. Methysergide

C. Propranolol

D. Caffeine

470. Keratocanthoma is found most commonly on ?
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A. Lip

B. Tongue

C. Hard palate

D. Gingiva

472. Bells palsy is triggered by_______________?
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A. Exposure to cold

B. Local and systemic infection

C. Any of the above

D. Tooth extraction

473. Globulamaxillary cyst is______________?
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A. Soft tissue cyst present often between maxillary Lateral incisor and cuspid teeth

B. Often present between incisor and cuspid teeth but is a bone cyst

C. A cyst present between the midline of the palate

D. A cyst present in the incisive canal

474. Hutchinsons incisiors are present in________________?
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A. Acquired syphilis

B. Secondary syphilis

C. Tertiary syphilis

D. congenital syphilis
475. Histopathologically reversal lines are seen in_____________?
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A. Pagets disease of the bone

B. Craniofacial dysplasia

C. Fibrous dysplasia

D. Cherubism

477. The term dilaceration refers to______________?
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A. Abrasions on two surfaces of single tooth

B. A tooth that is fractured at two or more places

C. A deformity of a tooth consisting of a sharp bend bend in the root

D. A root or tooth that is split into two

478. Talons cusp is characteristic of which syndrome_________________?
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A. Klinefelters syndrome

B. Downs syndrome

C. Rubinstein Taybi syndrome

D. Edwards syndrome

479. Turbid dentin in carious tooth is all EXCEPT_____________?
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A. Zone which can not be remineralized

B. Zone of bacterial invasion

C. Zone that need not be removed before restoration

D. Zone in which collagen is irreversibly denatured

480. The histological appearance of lava following around boulders in dentin dysplasia suggests_______________?
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A. Cascades of dentin to form root

B. Abnormal dentin formation in a disorganized fashion

C. Abrupt arrest to dentin formation in crown

D. Attempt to repair the defective dentin

481. The lateral spread of dental caries is facilitated mostly by the_______________?
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A. Enamel lamellae

B. Enamel spindles

C. Striae of Retzius

D. Dentinoenamel junction
482. In a patient with reduced salivary flow the carious incidence is_______________?
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A. More than the patient with normal salivary flow

B. None of the above

C. less than the patient with normal salivary flow

D. unaffected

483. Least cariogenic among these______________?
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A. Fructose

B. Sucrose

C. Raw starch

D. Cooked starch

484. Hecks disease is another name for_______________?
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A. Oral melanotic macule

B. Focal epithelial hyperplasia

C. Hereditary intestinal polyposis syndrome

D. Fibromatosis gingiva

485. Which of the following are a triad of the sign and symptoms of osteogenesis imperfecta________________?
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A. enlarged hand, feet, maxilla, mandible

B. blue sclera, sparse hair, anhydrosis

C. Blue sclera, brittle bones opalescent dentin

D. blue sclera, arachnodactyly, brittle bones

486. Turners tooth is seen in_____________?
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A. enamel hypoplasia due to congenital syphilis

B. enamel hypoplasia due to birth injuries

C. enamel hypoplasia due to local infection or local trauma

D. enamel hypoplasia due to hypocalcemia

487. The most common complication following rheumatold arthritis of the TMJ is____________?
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A. Subluxation

B. Synovial chondromatosis

C. Osteorthritis

D. Ankylosis
488. Which of the following are characteristic feature of cherubism______________?
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A. Progressive painless symmetric

B. A + C

C. Hypoplastic defects

D. Premature exfoliation of primary teeth

489. Large pulp chambers are characteristic of all the following conditions except_______________?
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A. Dentin Dysplasia

B. Shell teeth

C. Dentinogenesis imperfecta

D. Tauradontisam

490. Which of the following is most common development cyst________________?
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A. Naso-alveolar cyst

B. Globulomaxillary cyst

C. Nasopalatine cyst

D. Median palatal cyst

491. Orange peel and Ground glass radiographic appearance is observed in case of______________?
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A. Fibrous dysplasia

B. Osteosarcoma

C. Pagets disease

D. Weings sarcoma

492. Median rhomboid glossits is associated is associated with_________________?
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A. Leukoplakia

B. Burning sensation of tongue

C. Oral cancer

D. fungal infection
493. Which of the following is Fissural cyst is_______________?
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A. Nasopalatine cyst

B. Primordial cyst

C. Dentigerous cyst

D. Radicular cyst

494. PARULIS is an inflammatory enlargement seen in_______________?
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A. None of the above

B. Due to irritation from calculus / over hanging restoration

C. Extraction Socket

D. End of sinus tract
495. Starry sky appearance is seen in____________?
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A. Cherubism

B. Burkitts lymphoma

C. Garreys osteomyelitis

D. Pagets disease

496. Persons with the greatest risk of oral cancer_______________?
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A. Are middle aged have a poor oro-dental hygiene and regularly use tabacco

B. Have a poor oro-dental hygiene, nutritional deficiencies and are chronic alcoholics

C. Are young, have poor oro-dental hygiene and are heavy smokers

D. Are old, chronic alcoholics and regularly and regularly use tobacco
497. The most common bone tumor that occurs in children is_____________?
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A. Ewings sarcoma

B. Multiple myeloma

C. Osteosarcoma

D. Metastatic carcinoma

498. Which of the following is the most likely (among them) to turn malignant ?
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A. Intradermal nevus

B. Junctional nevus

C. Papilloma

D. Lichen planus

499. Which of the following is untrue about malignant melanoma ?
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A. occurs with equal frequency in both se*es

B. Rare in children

C. Palate is the most common intraoral site

D. Is very painful