AIIMS MDS Entrance Examination MCQs - November 2004

# The primordia of the craniofacial complex develops from:
A. Hensen's node
B. Notochordal process
C. Both
D. None

# The maxillary nerve exits cranium through _________ foramen.
A. Ovale
B. Rotundum
C. Stylomastoid
D. Inferior orbital fissure

# A radioopaque line is observed in the dentin underlying a three month old class II amalgam restoration. Which of the following bases was used in this restoration?
A. Calcium hydroxide
B. Zinc phosphate cement
C. Zinc oxide eugenol
D. Zinc oxide eugenol and formocresol

# Which is not a branch of External Carotid Artery?
A. Superior thyroid
B. Anterior Ethmoidal Artery
C. Posterior Auricular Artery
D. Occipital artery

# The nerve supply of stapedius muscle is:
A. III cranial nerve
B. V cranial nerve
C. VII cranial nerve
D. XI cranial nerve

# The carotid artery may be palpated at the:
A. Hyoid bone
B. Thyroid cartilage
C. Transverse process of C5
D. Transverse process of C6

# Class specific antigenic determinants of an immunoglobulin is associated with:
A. L- Chain
B. H- Chain
C. J- Chain
D. Variable region

# The afferent fibers which are most sensitive to local anesthetic belong to group:
A. A
B. B
C. C
D. D

# Number of branches of the internal carotid artery in the neck is:
A. Zero
B. One
C. TWo
D. Three

# Carbonic Anhydrase in the kidney tubular cells is associated with the resorption of:
A. Urea
B. Chlorine
C. Bicarbonate
D. All of the above

# The blood glucose level in diabetes mellitus is decreased by the removal of:
A. Thyroid
B. Parathyroid
C. Anterior Pituitary
D. Posterior Pituitary

# The molecular weight of a protein can be determined by:
A. native polyacrylamide gel electrophoresis
B. Sodium dodecyl sulphate-h-PAGE
C. Isoelectric focusing
D. Ion exchange chromatography

# Decreased glycolytic activity impairs oxygen transport by hemoglobin due to:
A. Reduced energy production
B. Decreased production of 2,3 BPG
C. Reduced synthesis of Hb
D. Low levels of O2

# Peripheral membrane proteins are present:
A. Outside the cell membrane
B. Inside the cell membrane
C. Both
D. None

# ____________ is also an initiation code for protein.
A. Leucine
B. Lysine
C. Methionine
D. Isoleucine

# The main enzyme responsible for activation of Xenobiotics is:
A. Cytochrome P-450
B. NADPH Cytochrome P-450 reductase
C. Glucuronyl transferase
D. All of the above

# Cell organelle containing DNA is:
A. Mitochondria
B. Golgi body
C. ER
D. All

# In chronic viral hepatitis:
A. Hepatitis virus infection is a common cause in children
B. Morphological classification into chronic active hepatitis and chronic persistent hepatitis are important
C. Fatty change is pathognomic of Hepatitis C virus infection
D. Grading refers to the extent of necrosis and inflammation

# The maximum shrinkage during firing process in ceramics occurs in ______ stage.
A. High bisque stage
B. Fusion stage
C. Low bisque stage
D. No contraction

# Function of fluoride flux in soldering process of Co-Cr alloy is:
A. Reduces copper oxide
B. Reduces chromium oxide
C. Prevents flow of material in undesirable area
D. Increases strength of solder

# 2% potassium sulphate hardening solution is used in:
A. Impression compound
B. Alginate
C. Agar-agar
D. ZOE paste

# Condensation shrinkage of porcelain during firing depends upon:
A. rate of firing at firing temperature
B. uniformity of particle size
C. type of investment used
D. shape and size of particle

# Which one of the following micro-organisms uses antigenic variation as a major means of evading host defences?
A. Streptococcus pneumoniae
B. Borrelia recurrentis
C. Mycobacterium tuberculosis
D. Listeria monocytogenes

# Addition of 4% potassium sulphate and 0.4% Borax to impression plaster helps in:
A. regulate setting time and expansion
B. impairing color and taste
C. regulating strength and consistency
D. adhering to tray during impression

# Which of the following is caused by Amphotericin?
A. Hypokalemia
B. Hyperkalemia
C. Hypermagnesemia
D. Hyponatremia

# Myogenin is an immunohistochemical stain used for:
A. Rhabdomyosarcoma
B. Schwannoma
C. Retinoblastoma
D. Malignant fibrous histiocytoma

# Genes for sex determination is:
A. Shh
B. SRY
C. AZF
D. HOX

# True about acute primary amoebic meningo-encephalitis is:
A. Meningitis caused by acanthoamoeba species is acute in nature
B. Diagnosis is by demonstration of trophozoite in CSF
C. Both
D. None

# Which of the following is a true statement?
A. Hanta Virus Pulmonary syndrome is caused by inhalation of rodent urine and feces
B. Kyanasaur forest disease is caused by bite of wild animal
C. Both
D. None

# True about Mycobacterium other than tubercular bacilli:
A. Causes disseminated infection
B. Occurs in persons with normal immunity
C. Cause decreased efficacy of both due to cross immunity
D. All

# A maxillary right canine can be distinguished from a maxillary left canine because:
A. root curves to mesial in the apical
B. distal half shows more convexity than mesial half
C. facially the cusp tip is placed distal to bisecting line
D. lingually the cervical line slopes mesially

# A five year old child is given an extended course of tetracycline drug. Which teeth can be affected?
A. Canines, premolars and second molars
B. Canines and premolars
C. Central incisors and lateral incisors
D. First molars

# Centrineuraxial anaesthesia is not contraindicated in:
A. Platelets less than 80000
B. Patient is on aspirin
C. Patient is on oral anticoagulants
D. Raised intracranial pressure

# Drug not used in Helicobacter pylori infection is:
A. Metronidazole
B. Mosapride
C. Omeprazole
D. Amoxicillin

# Which drug is not acetylated?
A. INH
B. Hydralazine
C. Dapsone
D. Metoclopromide

# Which is a prodrug?
A. Enalapril
B. Salmeterol
C. Clonidine
D. Acetazolamide

# Teeth formation first seen in utero at:
A. 9 weeks
B. 2 weeks
C. 16 weeks
D. 20 weeks

# Relative to primary mandibular incisors, permanent incisors erupt:
A. Lingually
B. Facially
C. Distally
D. mesially

# What is the thickness of the layer of prismless enamel found in primary teeth?
A. 25 micrometer
B. 50 micrometer
C. 75 micrometer
D. 100 micrometer

# In which part of the oral cavity is the mucous membrane the thinnest?
A. Soft palate
B. Labial mucosa
C. Floor of mouth
D. Buccal mucosa

# Not seen in adrenal deficiency:
A. Hypoglycemia
B. Hypocalcemia
C. Hypotension
D. None

# The most common type of epilepsy seen in children is:
A. Grand Mal
B. Myoclonic
C. Petit Mal
D. Atonic

# Single conical crown with single root is called as:
A. Polyphyodont
B. Diphyodont
C. Haplodont
D. Acrodont

# The Y shaped occlusal pattern is seen in :
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar

# The disorder characterized by craniostosis, craniofacial anomalies, severe symmetrical syndactyly of the hands and feet along with preaxial polysyndactyly and variable soft tissue syndactyly is:
A. Carpenter's syndrome
B. Crouzon's syndrome
C. Apert's syndrome
D. Down's syndrome

# Unilateral vesicular eruption along the course of the nerve in oro-facial region is:
A. Herpes-Zoster
B. Herpes Simplex
C. Molloscum contagiosum
D. Infectious mononucleosis

# The cyst which is found within the bone at the junction of the globular process, the lateral nasal process and the maxillary process:
A. Nasoalveolar cyst
B. Globulomaxillary cyst
C. Nasopalatine cyst
D. Midpalatine cyst

# The cyst located at the junction of the medial nasal process, lateral nasal process and maxillary process is:
A. Nasoalveolar cyst
B. Globulomaxillary cyst
C. Nasopalatine cyst
D. Midpalatine cyst

# Radiographic appearance of ossifying fibroma:
A. Unilateral radioopacity
B. Multilocular radioopacity
C. Unilocular radiolucency
D. Multilocular radiolucency

# Which of the following is the correct glass transition temperature of impression compound?
A. 43.5 degree celsius
B. 39 degree celsius
C. 65 degree celsius
D. 100 degree celsius

# Which of the following are characteristic feature of high copper amalgam?
A. Low compression strength
B. High marginal breakdown
C. Less marginal fracture
D. High creep

# Which of the following acts as accelerator in ZOE impression paste?
A. Zinc acetate and Calcium chloride
B. Zinc chloride and Eugenol
C. Zinc sulfate and Eugenol
D. Glycerin

# All of the following nuclei belongs to the general visceral efferent column except?
A. Facial nerve nucleus
B. Trigeminal nerve nucleus
C. Dorsal nucleus of vagus
D. Nucleus ambiguous

# The sudden appearance of dumbbell shape swelling immediately after third molar nerve block is:
A. Injection in pterygoid plexuses
B. Injection in parotid gland
C. Injection into the internal maxillary artery
D. Injection into the nasal cavity

# Dontrix gauze is used for:
A. Measurement of wire strength
B. Measurement of force
C. Measurement of wire distortion
D. Measurement of wire deformation

# In class III composite restoration, retention should be placed in:
A. Axial wall
B. Entirely in dentin
C. At dentinoenamel junction
D. At the expense of facial and lingual walls, but not the axial walls

# Which is the most triggering factor for bruxism?
A. TMJ dysfunction
B. Pericoronitis
C. Discrepancy between centric relation and centric occlusion
D. Acute periodontal disease

# 'Intrinsic factor of Castle' is secreted by which of the following cells in gastric glands?
A. Chief cells
B. Parietal cells
C. Mucus cells
D. B cells

# All of the following are true about therapy for tuberculosis except:
A. 'Flu like syndrome' is usually seen in people taking Rifampicin on a daily basis
B. Ethambutol accumulates in renal failure
C. Hyperuricemia is a recognized side effect of Pyrazinamide
D. Red green color impairment is an early sign of ethambutol induced optic neuritis

# It is essential to lubricate dam before applying it. Which of the following is not a suitable lubricant?
A. Soapy water
B. Vaseline
C. Shaving cream
D. Scrubb gel

# Which of the following is wrong method to apply rubber dam with wingless clamp on the tooth?
A. Place clamp on tooth and insert the dam over it
B. Place dam on tooth with fingers then place clamp over it
C. Place dam and frame outside the oral cavity and then on tooth using forcep over the dam
D. Place dam and frame outside the oral cavity and then on tooth using forcep under the dam

# Paralleling technique is used to:
A. Minimize superimposition of anatomic structures
B. Prevent shortening of image
C. Minimize distortion
D. Prevent elongation of image

# Hand-wrist radiograph is used in the assesment of:
A. Skeletal maturity
B. Chronologic age
C. Skeletal and chronologic age
D. None of the above

# With a flush terminal plane, the permanent first molar will
A. initially be class II
B. initially be clasS III
C. immediately assume a normal relationship
D. erupt immediately into an end to end relationship

# In a class V cavity preparation, mesiodistal walls depends upon:
A. direction of enamel rods
B. contours of gingiva
C. size of carious lesion
D. location of contact area

# In treating a lateral incisor with periapical abscess and draining sinus, the treatment of choice for draining sinus is:
A. No treatment
B. Curettage the sinus tract
C. Cauterization
D. Irrigation with sodium hypochlorite

# Which stage of Plasmodium Vivax is infectious to mosquito?
A. Gametocyte
B. Trophozoite
C. Merozoite
D. Sporozoite

# A dental surgeon has recovered from Hepatitis B by 3 months rest. His lab findings are normal but he is not allowed to attend the patients as per medical board as he is:
A. healthy carrier
B. active carrier
C. convalescent carrier
D. paradoxical carrier

# Which is associated with defect in DNA repair?
A. Xeroderma pigmentosum
B. Icthyosis
C. Albinism
D. Sickle cell anemia

# Slidenafil is inhibitor of:
A. cAMP
B. cGMP
C. PDE-5
D. PGI2

# Cooley's anemia is commonly known as:
A. Beta thalassemia major
B. Beta thalassemia minor
C. Beta thalassemia intermedia
D. Alpha thalassemia

# Increase in height of the mandible and appearance of interdental spaces in an elderly patient is associated with:
A. Hyperpituitarism
B. Hyperthyroidism
C. Hypopituitarism
D. Hypothyroidism

# Bilateral mandibular enlargement is seen in which of the following conditions?
A. Cherubism
B. Osteoma
C. Monostotic fibrous dysplasia
D. Ameloblastoma

# Which of the following does not occur in reaction ZnO and Eugenol?
A. Zinc oxide hydrolysis to hydride
B. Autocatalytic reaction
C. Water is the byproduct of reaction
D. Dehydrated ZnO reacts with dehydrated eugenol

# Dental caries is associated with:
A. S. mitis
B. S. salivarius
C. S. rattus
D. Staphylococcus

# Distance of the blade from the shank to have anti-rotational stability of the instruments is:
A. 2 mm
B. 3 mm
C. 4 mm
D. 5 mm

# A patient with poor neuromuscular control presents with occlusal prematurities. Occlusion can be corrected by:
A. Direct correction in patient's mouth
B. No need to establish correct occlusion in such cases
C. Patient is asked to bite on carborundum paste
D. Take new interocclusal record and correct on articulator

# A patient with a history of fall after hypoglycemic episode presents with pain in bilateral preauricular region and deviation of the mandible to the right side on mouth opening. Probable diagnosis is:
A. Fracture of right condyle
B. Fracture of left condyle
C. Dislocation of left condyle
D. Dislocation of both condyles

# Infection of masticatory space is usually associated with:
A. Tonsillar abscess
B. Mandibular molar
C. Lateral pharyngeal space
D. Parotid space infection

# First local anesthetic to be used clinically was:
A. Cocaine
B. Bupivacaine
C. Procaine
D. Lignocaine

# Which combination forms day care anesthesia?
A. Fentanyl, Propofol, Isoflurane
B. Pethidine, Propofol, Isoflurane
C. Thiopental, Pethidine, Halothane
D. Thiopentane, Isoflurane, Fentanyl

# A male patient aged 45 years complains of a firm, painless swelling in the anterior palate and bilaterally symmetrical heart shaped radiolucency between the central incisors. The teeth are vital. Most probable diagnosis is:
A. Nasoalveolar cyst
B. Median palatal cyst
C. Globulomaxillary cyst
D. Nasopalatine canal cyst

# Green stains found on recently erupted upper anterior teeth of child which are not removed after brushing are due to:
A. Chromogenic bacteria
B. Neonatal line
C. Calculus
D. Materia alba

# To predict the occurence of caries in a 6 year old child, which of the following gives the best result?
A. Sibling's caries
B. Mother's caries
C. Snyder's test
D. Parental caries

# Early and most reliable method to predict the caries level occurance in a child is:
A. Previous caries experience
B. Snyder test
C. Mother's caries activity
D. Sibling caries activity

# A periodontal pocket of 8 mm deep having the junctional epithelium coronal to CE junction is:
A. An infrabony pocket
B. A pseudopocket
C. A true periodontal pocket
D. A furcation involvement

# Severe alveolar bone loss seen in patients with juvenile periodontitis is related to:
A. Impaired osteoblastic activity
B. Increased phagocytosis
C. Increased macrophage migration
D. Impaired neutrophil chemotaxis

# Which of the following organism is not implicated in etiology of periodontal disease?
A. Bacteroides
B. Wollinella
C. Neisseria
D. Eikenella

# A 9 year old child having carious maxillary lateral incisor got small swelling over the respective area. In 48 hours the swelling enlarged and reached the lower border of eye, very sensitive to touch and hot, painful to the touch stimuli. The lymph node is palpable and he has little fever, the swelling rebounds on pressure. The recommended treatment is:
A. Antibiotic and hot fomentation
B. Incision and drainage
C. Injection of sclerosing unit
D. Application of pressure bandage

# A patient on steroid therapy has to undergo elective extraction of many teeth. The premedication indicated prior to surgical procedure is:
A. NSAIDS
B. Antibiotics
C. Antihistamines
D. Antihypertensives

# Which of the following is true about 'Z' score?
A. Normal distribution
B. Binomial distribution
C. Chi Square test
D. Non-parametric method

# After the tooth emerges to the occlusal plane, the clinical crown height increases by:
A. Passive eruption
B. Active eruption
C. Post emergence growth spurt
D. Juvenile occlusal equilibrium