MCQs on Developmental Disturbances of Orofacial Region - Oral Pathology Part 2

# Bohn's nodules are :
A. Cystic swellings in neonates
B. Cysts associated with soft palate
C. Cysts of gingiva in growing children
D. Warts on the tongue

# False about anodontia :
A. May involve both the deciduous and the permanent dentition
B. In false anodontia, tooth doesn't undergo full development
C. may involve a single tooth
D. In total anodontia , all teeth are missing

# Turner's tooth is seen in :
A. enamel hypoplasia due to hypocalcemia
B. enamel hypoplasia due to birth injuries
C. enamel hypoplasia due to congenital syphilis
D. enamel hypoplasia due to local infection or local trauma

# All are true about supernumerary tooth except :
A. may have resemblance to normal teeth
B. distomolars does not resemble any other tooth
C. Mesiodens is the most common supernumerary tooth
D. more common in mandible

# Dental anomaly of teeth associated with defective bone formation is seen in :
A. Amelogenesis imperfecta
B. dentinogenesis imperfecta
C. Odontodysplasia
D. Osteitis deformans

# Fusion of teeth is more common in :
A. Primary dentition
B. Permanent dentition
C. Mixed dentition
D. None of the above

# Multiple osteomas, multiple polyposis, supernumerary teeth are found in __________ syndrome :
A. Reiter's
B. Peutz - jeghers
C. Gardner's
D. Behcet's

# Prolonged administration of broad spectrum antibiotics results in the formation of :
A. Black hairy tongue
B. Median rhomboid glossitis
C. Geographic tongue
D. Fissured tongue

# Hairy tongue is characterized by :
A. Hypertrophy of fungiform papillae
B. Hypertrophy of filiform papillae
C. Hypertrophy of foliate papillae
D. Hypertrophy of circumvallate papillae

# A four year old child has less number of teeth and lateral incisors with bifurcated roots with two root canals. This condition is called:
A. Dilaceration
B. Concrescence
C. Gemination
D. Fusion
# Nasolabial cyst is thought to arise from :
A. Remnants of cell rests of Serres
B. Remnants of cell rests of Malassez
C. Remnants of cell rests of embryonic lacrimal duct
D. Maxillary sinus lining epithelium

# Microdontia is seen most commonly affecting :
A. Maxillary lateral incisor
B. Mandibular second premolar
C. Mandibular central incisor
D. Mandibular first premolar

# Taurodontism is characterized by :
A. Hypercementosis
B. Elongated wide pulp canals and short roots
C. Obliterated pulp chambers with secondary dentine deposition
D. Rootless teeth with thin shell of enamel

# Mottled enamel is due to :
A. Vitamin A deficiency
B. Excess of fluoride
C. Vitamin D deficiency
D. Teratogens

# Which of the following is a Fissural Cyst ?
A. Dentigerous cyst
B. Primordial Cyst
C. Nasopalatine cyst
D. Radicular cyst

# Bifid tongue, a congenital anomaly occurs due to non-fusion of :
A. Tuberculum impar and lateral lingual swellings
B. Hypobranchial eminence and tuberculum impar
C. The two lateral lingual swellings
D. Some of the above

# Anodontia affects the growth of :
A. Maxilla
B. Mandible
C. Alveolar bone
D. Cranium

# Delayed eruption of at least part of the dentition is a recognized feature of all of the following except :
A. Rickets
B. Congenital hyperthyroidism
C. Cleidocranial dysplasia
D. Cherubism

# About geographic tongue, all are true except :
A. Lesions may be bilaterally symmetrical on tongue
B. No treatment is required
C. Is a precancerous condition
D. May be related to emotional stress

# Which of the following dental sequel is likely in child with a history of generalised growth failure (failure to thrive) in the first 6 months of life ?
A. Retrusive maxilla
B. Enamel hypoplasia
C. Retrusive mandible
D. Dentinogenesis imperfecta
# A 4 year old child has a normal complement of primary teeth, but they are gray and exhibit extensive occlusal and incisal wear. Radiographic examination indicates extensive deposits of secondary dentin in these teeth. This condition is most likely :
A. Neonatal hypoplasia
B. Amelogenesis imperfecta
C. Cleidocranial dysplasia
D. Dentinogenesis imperfecta

# A developmental abnormality characterized by the presence of fewer than the usual number of teeth is :
A. Anodontia
B. Oligodontia
C. Microdontia
D. Dens in dente

# Median rhomboid glossitis is asssociated with :
A. Oral cancer
B. Fungal infection
C. Leukoplakia
D. Burning sensation of tongue

# Most commonly submerged tooth is :
A. Mandibular primary first molar
B. Mandibular primary second molar
C. Maxillary primary first molar
D. Maxillary primary second molar

# Epstein pearls are cysts that arise from ?
A. Squamous tissue of the mucosa
B. Connective tissue of the mucosa
C. Rests of the Malassez
D. Dental Lamina

# A dens in dente is caused by :
A. An abnormal proliferation of pulp tissue
B. Denticle formation within the pulp tissue
C. A deep invagination of the enamel organ during formation
D. A supernumerary tooth bud enclaved within a normal tooth

# In children the most frequently missing permanent teeth are :
A. First premolars
B. Second premolars
C. Maxillary lateral incisors
D. Mandibular lateral incisors

# Hutchinson's incisors are present in:
A. Congenital syphilis
B. Tertiary syphilis
C. Secondary syphilis
D. Acquired syphilis

# A 15 year old boy shows an inverted pear shaped radiolucency between the upper central incisors. The teeth are normal in all aspects. The most likely diagnosis is :
A. Globulomaxillary cyst
B. Nasopalatine cyst
C. Aneurysmal cyst
D. Dentigerous cyst

# Odontodysplasia is most common in :
A. Mandibular premolar
B. Mandibular canine
C. Mandibular third molar
D. Maxillary central incisor

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MCQs on Developmental Disturbances of Orofacial Region - Oral Pathology Part 1

# A union of the roots of adjacent teeth through the cementum is referred to as :
A. Concrescence
B. Fusion
C. Gemination
D. None of the above

# The term dilaceration refers to :
A. A deformity of a tooth consisting of a sharp bend in the root
B. Abrasions on two surfaces of a single tooth
C. A root or tooth that is split into two
D. A tooth that is fractured at two or more places

MCQs on Periodontal Ligament - Oral Histology Part 4

# The main function of the horizontal fibers of the PDL is:
A. Prevent extrusion
B. Prevent rotation
C. Maintains the mesiodistal width
D. All of the above

# The periodontal ligament is approximately :
A. 0.25 mm inn thickness
B. 0.5 mm in thickness
C. 0.75 mm in thickness
D. 1.0 mm in thickness

# Narrowing of periodontl ligament in labially placed mandibular canine with age is due to :
A. Due to deposition of cementum and bone
B. Down growths of gingival epithelium
C. Gingival cysts formed from cell rests
D. Reversal of function of horizontal and oblique fibers

# Centre of the disc of TMJ is :
A. Avascular
B. Devoid of nervous tissue
C. Avascular and devoid of nervous tissue
D. None of the above

# The type of bone present in the labial area of the anterior teeth is:
A. Cortical
B. Cancellous
C. Osteophytic
D. Exophytic

# The component of future TMJ shows development at:
A. 6 weeks
B. 10 weeks
C. 18 weeks
D. 16 weeks

# In a dried skull, holes on the lingual aspects of the deciduous teeth are called:
A. Volkmann canals
B. Canals of Hirschfeld and Zuckerkandl
C. Haversian canals
D. Gubernacular canals
# A special feature of the periodontal ligament fibroblasts is:
A. The number of organelles
B. Presence of actin fibers and shape change
C. Size of the cells
D. Collagen fiber formation

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MCQs on Periodontal Ligament - Oral Histology Part 3

# Periodontal fibers joining cemental surface of one tooth, to cemental surface of adjacent tooth are called:
A. Gingivodental
B. Cemental fibers
C. Horizontal fibers
D. Transseptal fibers

# Sharpey's fibers are present in:
A. Bone
B. Periosteum
C. Periodontal ligament
D. All of the above

# Interdependency of osteoblasts and osteoclasts in bone remodelling is called as:
A. Lacunae
B. Coupling
C. Reversal lines
D. Canaliculi

# True about osteoclasts:
A. Monocytes are precursor cells of osteoclasts
B. The plasma membrane of osteoclasts adjacent to bone that is being resorbed is known as striated or ruffled border
C. Contain lysosomes with acid phosphates
D. All of the above are true

# Periodontal ligament is made up of :
A. Type I collagen
B. Type I and Type III collagen
C. Type I and Type II collagen
D. Type I and Type IV collagen

# Which of the following is correct ?
A. Fibronectin helps in attachment of fibroblasts to collagen
B. Cementicles are found in periodontal ligament of older individuals
C. The large nerve fibers are myelinated and are concerned with discernment of touch
D.The small nerve fibers may or may not be myelinated and are concerned with discernment of pain
E. All of the ABOVE
# Cementicles are found in the:
A. Gingiva
B. Periodontal ligament
C. Alveolar bone
D. Cementum

# The most abundant group of fibers in the PDL are:
A. Trans septal
B. Horizontal
C. Oblique
D. Apical

# Width of the Periodontal ligament is least at:
A. Cervical third
B. Apical third
C. Fulcrum of rotation
D. It has uniform width

# The rests of Malassez in the periodontal ligament are derived from:
A. Dental pulp
B. Lamina propria
C. Odontogenic epithelium
D. Vestibular lamina

# Development of supporting tissues of the tooth is initiated by :
A. Cells of dental follicle
B. Cells of odontogenic layer
C. Cementoblasts
D. Cells of the gingiva

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MCQs on Periodontal Ligament - Oral Histology part 2

# Width of PDL is :
A. O.10 mm
B. 0.50 mm
C. 0.25 mm
D. 0.75 mm

# Intermediate Plexus is seen in the:
A. Cementum
B. PDL
C. Pulp
D. Dentin

# In mammals independent and tough suspension for teeth is provided by:
A. Alveolar sockets
B. Cementum
C. Gubernacular cords
D. Periodontal membrane

# Bone adjacent to periodontal ligament that contains a great number of Sharpey's fibers is known as :
A. Lamina dura
B. Bundle bone
C. Lamina propria
D. Lamina densa

# The most abundant principal fiber group in periodontal ligament is :
A. Horizontal
B. Transseptal
C. Apical
D. Oblique

# Collagen biosynthesis occurs inside the :
A. Chondroblasts
B. Odontoblasts
C. Osteoblasts
D. Fibroblasts

# Which of the following groups of fibers are not attached to alveolar bone ?
A. Apical
B. Horizontal
C. Oblique
D. Transseptal
# Principal fibers of PDL are attached to :
A. Alveolar bone proper
B. Bundle bone
C. Lamellar bone
D. Cortical bone

# Periodontal ligament has predominantly:
A. Type II collagen fibers
B. Oxytalan fibers
C. Elastic fibers
D. Type I collagen fibers

# The calcified mass found in PDL are:
A. Cementicles
B. Osteoblasts
C. Cementoclasts
D. Osteoclasts

# Sharpey's fibers are derived from:
A. Hertwig's root sheath
B. Epithelial rest cells of Malassez
C. Alveolar bone
D. Dental follicle

# Intermediate plexus is absent in which of the following principal fibers:
A. Gingival
B. Oblique
C. Horizontal
D. Transseptal

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MCQs on Periodontal Ligament - Oral Histology Part 1

# Which of the following cells are the predominant connective tissue cells of the periodontal ligament?
A. Cementoblasts
B. Fibroblasts
C. Osteoblasts
D. Cell rests of Malassez

# The periodontal ligament:
A. Derives its blood primarily from the branches of vessels entering the pulp
B. Has a slow rate of turn over
C. Contains epithelial cells
D. Comprises primarily of type II collagen

# Which of the following is not the principal fiber group of the periodontal ligament ?
A. Horizontal
B. Oblique
C. Alveolar crest
D. Trans septal

# Anchoring fibrils are composed of:
A. Type V and VII collagen
B. Type I and III collagen
C. Type IV collagen
D. Type IV and III collagen

# Collagen molecule exhibits all of the following features EXCEPT :
A. Triple plated sheath
B. Mostly contains glycine residues
C. Exhibit cross striations at 64 micrometer
D. Intracellular in nature

# Remnants of Hertwig's root sheath are found in :
A. Gingiva
B. Alveolar bone
C. Cementum
D. Periodontal Ligament
# Age changes in the periodontal ligament include which of the following ?
A. Increased fibroplasia
B. Increased vascularity
C. Increased thickness
D. Decrease in the number of cementicles

# All of the following cells of periodontal ligament are of mesenchymal origin EXCEPT:
A. Fibroblasts
B. Multi totipotent cells
C. Cementoblasts
D. Cell rests of Malassez

# The attachment apparatus of tooth is composed of:
A. Gingiva,cementum and alveolar bone
B. Gingiva and cementum
C. Cementum and periodontal ligament
D. Periodontal ligament, cementum and alveolar bone

# The vascular supply of the periodontal ligament is :
A. Greatest in the middle third of a single rooted tooth
B. Greatest in the middle third of a multirooted tooth
C. A net-likee plexus that runs closer to the cementum than to the bone
D. A net-like plexus that runs closer to the bone than to the cementum

# Fibers of the periodontal ligament embedded in the bone are:
A. Sharpey's fibers
B. Tome's fibers
C. Elastic fibers
D. Ray's fibers

# Group of fibers, which resist the masticatory forces are:
A. Dentogingival
B. Transseptal
C. Oblique
D. Horizontal

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MCQs on Diseases of Salivary Glands - Oral Pathology Part 3

# Spindle cell carcinoma is a variant of :
A. Pleomorphic adenoma
B. Adenoid cystic carcinoma
C. Basal cell carcinoma
D. Squamous cell carcinoma

# Commonest site for ectopic salivary gland tumor is :
A. Tongue
B. Cheek
C. Palate
D. Neck

# Chemical Mumps is synonymous with:
A. Epidemic parotitis
B. Iodine mumps
C. Nutritional mumps
D. Nonspecific mumps

# Break up time (BUT) test is done in :
A. Sjogren's syndrome
B. Multiple sclerosis
C. SLE
D. Myasthenia gravis

# Salivary duct calculi :
A. Produce pain on eating
B. Are commonest in the parotid ducts
C. Are common cause of acute parotitis
D. Are associated with hypercalcemic states

# Sialoliths are stones found in the salivary duct and gland and are primarily composed of:
A. Hydroxyapatite
B. Potassium chloride
C. Unknown compounds of phosphates
D. Calcium chloride

# In Xerostomia, the salivary pH is:
A. Unaffected
B. Low
C. High
D. Increased in morning and decreased in day

# Pleomorphic adenoma is :
A. a teratomatous tumour of the salivary gland
B. a neuroendocrine cell tumour
C. multiple ectopic tissue proliferating in the salivary gland
D. myoepithelial or ductal reserve cell origin

# Which of the following statements about Sjogren's Syndrome is incorrect ?
A. MRI shows salt and pepper appearance
B. Lacrimal gland enlargement is common
C. Minor salivary gland biopsy is a diagnostic test
D. Pilocarpine is the most useful and convenient drug in its treatment


# Chocolate colored fluid is seen in the cystic space of:
A. Dentigerous cyst
B. Odontogenic keratocyst
C. Unicystic ameloblastoma
D. Papillary cystadenoma lymphomatosum

# Intra oral pleomorphic adenoma usually occurs in:
A. Buccal mucosa
B. Upper lip
C. Floor of the mouth
D. Palate

# A salivary gland tumor, which histologically shows a double layer of epithelial cells based on a reactive lymphoid stroma is:
A. Pleomorphic adenoma
B. Mucoepidermoid carcinoma
C. Acinic cell tumor
D. Warthin tumor

# Sjogren's syndrome affects :
A. Exocrine glands
B. Paracrine glands
C. Endocrine glands
D. Autocrine glands

# In which of the following salivary gland tumors, the tumor is composed of "intermediate cells" histologically ?
A. Adenoid cystic carcinoma
B. Mucoepidermoid carcinoma
C. Pleomorphic adenoma
D. Warthin's tumor

# Which of the following salivary gland tumors has highest rate of malignant transformation ?
A. Parotid
B. Submandibular
C. Sublingual
D. Minor

# The following are the high grade salivary malignancies , EXCEPT :
A. Basal cell adenocarcinoma
B. Mucoepidermoid carcinoma
C. Adenoid cystic carcinoma
D. Salivary duct carcinoma

# Treatment for recurrent ranula is :
A. Incision
B. Excision
C. Excision with adjacent glands
D. Marsupialization

# Sialography of normal salivary gland reveals the ductal architecture as having an appearance of :
A. Sausage string
B. Fruit-laden tree
C. Leafless tree
D. Ball in hand

# Microscopically, epimyoepithelial islands are typically seen in :
A. Sjogren's syndrome
B. Mucoepidermoid carcinoma
C. Epithelial-myoepithelial carcinoma
D. Myoepithelioma

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