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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