Option A: Alveolar sockets
Option B: Cementum
Option C: Gubernacular cords
Option D: Periodontal membrane
Correct Answer: Periodontal membrane ✔
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Option A: Dentogingival
Option B: Transeptal
Option C: Oblique
Option D: Horizontal
Correct Answer: Oblique ✔
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Option A: Sharpey’s fibres
Option B: Tomes fibres
Option C: Elastic fibres
Option D: Ray’s fibres
Correct Answer: A. Sharpey’s fibres ✔
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Option A: Gingiva, cementum and alveolar bone
Option B: Gingiva and cementum
Option C: Cementum and periodontal ligament
Option D: Peridontal ligament the cementum and the alveolar bone
Correct Answer: Peridontal ligament the cementum and the alveolar bone ✔
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Option A: Increased fibroplasia
Option B: Increased vascularity
Option C: Increased thickness
Option D: Decreased in number of cementicles
Correct Answer: Increased fibroplasia ✔
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Option A: Triple pleated sheath
Option B: Mostly contains glycine residues
Option C: Exhibit cross striations at 64 μm
Option D: Intracellular in nature
Correct Answer: Intracellular in nature ✔
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Option A: Horizontal
Option B: Oblique
Option C: Alveolar crest
Option D: Transseplat
Correct Answer: Transseplat ✔
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Option A: The number or organelles
Option B: Presence of actin fibres and shape change
Option C: size of the cells
Option D: Collagen fibre formation
Correct Answer: Presence of actin fibres and shape change ✔
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Option A: 6 weeks
Option B: 10 weeks
Option C: 18 weeks
Option D: 16 weeks
Correct Answer: 10 weeks ✔
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Option A: Avascular
Option B: Devoid of nervous tissue
Option C: Avascular & deviod of nervous tissue
Option D: None of the above
Correct Answer: Avascular ✔
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Narrowing of periodontal ligament in labially placed mandibular canine with age is due to__________?
Option A: Due to deposition of cementum and bone
Option B: Down growths of gingival epithelium
Option C: Gingival cysts formed from cell rests
Option D: Reversal of function of horizontal and oblique fibres
Correct Answer: Due to deposition of cementum and bone ✔
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Option A: Prevent extrusion
Option B: Prevent rotation
Option C: Maintains the mesiodistal width
Option D: All of the above
Correct Answer: Maintains the mesiodistal width ✔
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Option A: Dental pulp
Option B: Lamina propria
Option C: Odontogenic epithelium
Option D: Vestibular lamina
Correct Answer: Odontogenic epithelium ✔
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Option A: Trans-septal
Option B: Horizontal
Option C: Oblique
Option D: Apical
Correct Answer: Oblique ✔
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Option A: Monocytes are precursor cells of osteoclasts
Option B: The plasma membrane of osteoclasts adjacent to bone that is being resorbed is known as striated or ruffled border
Option C: Contain lysosomes with acid phosphates
Option D: All of the above are true
Correct Answer: All of the above are true ✔
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Option A: Bone
Option B: Periosteum
Option C: Periodontal ligament
Option D: All of the above
Correct Answer: Bone ✔
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Option A: Gingival
Option B: Oblique
Option C: Horizontal
Option D: Transseptal
Correct Answer: Gingival ✔
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Option A: Cementicles
Option B: Osteoblasts
Option C: Cementoclasts
Option D: Osteoclasts
Correct Answer: Cementicles ✔
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Option A: Alveolar bone proper
Option B: Bundle bone
Option C: Lamellar bone
Option D: Cortical bone
Correct Answer: Bundle bone ✔
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Option A: Chondroblasts
Option B: Odontoblasts
Option C: Osteoblasts
Option D: Fibroblasts
Correct Answer: Fibroblasts ✔
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Option A: Lamina dura
Option B: Bundle bone
Option C: Lamina propria
Option D: Lamina densa
Correct Answer: Bundle bone ✔
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Option A: Cementum
Option B: PDL
Option C: Pulp
Option D: Dentin
Correct Answer: PDL ✔
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Option A: Greatest in the middle-third of a single rotted tooth
Option B: Greatest in the middle-third of a multirooted tooth
Option C: A net like plexus that runs closer to the cementum than to the bone
Option D: A net like plexus that runs closer to the bone than to the cementum
Correct Answer: A net like plexus that runs closer to the bone than to the cementum ✔
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Option A: Fibroblasts
Option B: Multi totipotent cells
Option C: Cementoblasts
Option D: Cell rests of malassez
Correct Answer: Cell rests of malassez ✔
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Option A: Gingiva
Option B: Alveolar bone
Option C: Periodontal ligament
Option D: Cementum
Correct Answer: Periodontal ligament ✔
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Option A: Type V and VII collagen
Option B: Type I and III collagen
Option C: Type IV collagen
Option D: Type IV and III Collagen
Correct Answer: Type V and VII collagen ✔
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Option A: Derives its blood supply primarily from the branches of vessels entering the pulp
Option B: Has a slow rate of turn over
Option C: Contains epithelial cells
Option D: Comprises primarily of type II collagen
Correct Answer: Contains epithelial cells ✔
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Option A: Bone
Option B: Dentin
Option C: Cementum
Option D: Pulp
Correct Answer: Cementum ✔
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Option A: Cementoid
Option B: Incremental line
Option C: Cellular cementum
Option D: Acellular cementum
Correct Answer: Cementoid ✔
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Option A: Cellular cementum
Option B: Acellular cementum
Option C: Intermediate cementum
Option D: All of the above
Correct Answer: Cellular cementum ✔
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Option A: Hyperplasia of cementum
Option B: Hypertrophy of cementum
Option C: Resorption of cementum
Option D: None of the above
Correct Answer: Resorption of cementum ✔
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Option A: 55 to 60%
Option B: 60 to 65%
Option C: 65 to 70%
Option D: 70 to 75%
Correct Answer: 60 to 65% ✔
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Option A: Avascular
Option B: Vascular
Option C: Has blood supply initially only
Option D: None of the above
Correct Answer: Avascular ✔
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Option A: Hyperplasia
Option B: Hypoplasia
Option C: Hypertrophy
Option D: Excementoses
Correct Answer: Hyperplasia ✔
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Option A: Does not exhibit features of either dentin of cementum
Option B: Predominantly seen in apical tow thirds of roots of molars and premolars and is rare in incisors or deciduous teeth
Option C: Represents area of entrapment of hertwig’s sheath in dentin or cementum
Option D: All of the above are correct
Correct Answer: All of the above are correct ✔
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Option A: Cellular cementum
Option B: Acellular cementum
Option C: Both of the above
Option D: None of the above
Correct Answer: Cellular cementum ✔
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Option A: Enamel meet cementum at a point
Option B: Enamel overlaps cementum
Option C: Cementum overlaps enamel
Option D: Both never meet
Correct Answer: Enamel overlaps cementum ✔
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Option A: Dental cementum
Option B: Dental pulp
Option C: Enamel
Option D: Dentin
Correct Answer: Dental cementum ✔
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Option A: Cervical third of the root
Option B: Middle third of the root
Option C: Apical third of the root
Option D: No secondary cementum forms
Correct Answer: Apical third of the root ✔
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Option A: Sharpehy’s fibres and elastic fibres
Option B: Collagen fibres and blood vessels
Option C: Canaliculi and incremental lines
Option D: Lacunae and elastic fibres
Correct Answer: Canaliculi and incremental lines ✔
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Option A: First formed cementum
Option B: Less calcified than acellular type
Option C: More calcified than acellular type
Option D: Less irregular
Correct Answer: Less calcified than acellular type ✔
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Option A: Periodontal ligament
Option B: Alveolar bone
Option C: Cementum
Option D: Longbones
Correct Answer: Alveolar bone ✔
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Option A: Less than dentin
Option B: More than dentin
Option C: Equal dentin
Option D: None of the above
Correct Answer: Less than dentin ✔
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Option A: Forms during root formation
Option B: Forms after the eruption of the tooth
Option C: Seen at the coronal portion of the tooth
Option D: Formation is a slow process
Correct Answer: Forms after the eruption of the tooth ✔
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The cementuoenamel junction is approximately at the level at which the root canal becomes__________?
Option A: Twisted
Option B: Curved
Option C: Pulp chamber
Option D: Lateral canal
Correct Answer: Pulp chamber ✔
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Option A: Highly defined cellular zone near cemento – dentinal junction (CDJ)
Option B: Highly defined fibrillar zone near CDJ
Option C: Poorly defined zone near cemento-dentinal junction
Option D: Both a and B
Correct Answer: Poorly defined zone near cemento-dentinal junction ✔
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Option A: 45 to 50%
Option B: 50 to 55%
Option C: 55 to 60%
Option D: 60 to 65%
Correct Answer: 45 to 50% ✔
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Option A: Middle
Option B: Coronal
Option C: Apical
Option D: Interradicular
Correct Answer: Middle ✔
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Option A: Cementum is thinnest at CEJ (20-50μm)
Option B: Cementum is thickest towards the apex (150-200μm)
Option C: The apical foramen is surrounded by cementum
Option D: All of the above
Correct Answer: All of the above ✔
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Option A: Anatomic repair
Option B: Functional repair
Option C: Physiological repair
Option D: Hyperplasia
Correct Answer: Anatomic repair ✔
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Option A: Between enamel and cementum
Option B: Found at dentinocemental junction
Option C: Apical third
Option D: Coronal third
Correct Answer: Found at dentinocemental junction ✔
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Option A: Cementum is more resistant to resorption than bone
Option B: Bone is more resistant to resorption than cementum
Option C: Both are equally resorbable
Option D: None of the above
Correct Answer: Cementum is more resistant to resorption than bone ✔
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Option A: Ankylosis
Option B: Resorption of cementum
Option C: Hypertrophy of cementum
Option D: Hyperplasia of cementum
Correct Answer: Hyperplasia of cementum ✔
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Option A: Ankylosis may occur
Option B: Exforliation of teeth occur
Option C: Delayed eruption
Option D: No change occurs
Correct Answer: Exforliation of teeth occur ✔
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Option A: The uncalcified matrix of cementum is called cementoid
Option B: Cementum contain type I collagen predominantly
Option C: Cementodentinal junction is sometimes scallopes in deciduous teeth and smooth in permanent teeth
Option D: All of the above
Correct Answer: All of the above ✔
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Option A: Coronal half of root
Option B: Apical half of root
Option C: Apex of root
Option D: Entire root
Correct Answer: Coronal half of root ✔
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Option A: Cementum meets enamel
Option B: Cementum overlaps enamel
Option C: Cementum does not meet enamel
Option D: All of the above
Correct Answer: All of the above ✔
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Option A: Less than bone
Option B: More than bone
Option C: Equal to that of bone
Option D: More than that of enamel
Correct Answer: Less than bone ✔
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Option A: 10%
Option B: 30%
Option C: 60%
Option D: 90%
Correct Answer: 30% ✔
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Cementum__________?
Option A: Is derived from the sheath of hertwig
Option B: Is acellular in the apical third of the tooth
Option C: Often overlaps the enamel
Option D: Does not contain collagen fibres
Correct Answer: Often overlaps the enamel ✔
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Option A: Reparative dentin is characterized by having fewer and more twisted tubules than normal dentin and may include odontoblasts
Option B: Dead tracts appear black in transmitted and white in reflected ligth
Option C: Sclerotic transparent dentin appears transparent or light in transmitted light and dark in reflected light
Option D: All of the above
Correct Answer: All of the above ✔
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Option A: Are found in mantle dentin
Option B: Contain collagen
Option C: Produce alkaline phosphatase
Option D: Inhibit mineralization
Correct Answer: Are found in mantle dentin ✔
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Option A: Collagen fibers are oriented perpendicular to DEJ
Option B: Vonkorff fibers are present
Option C: Contain phosphophoryn
Option D: Requires matrix vesicle for mineralization
Correct Answer: Contain phosphophoryn ✔
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Option A: Transduction theory
Option B: Direct neural stimulation
Option C: Hydrodynamic theory
Option D: Hydrostatic theory
Correct Answer: Hydrodynamic theory ✔
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Option A: Predentin
Option B: Mantle dentin
Option C: Interglobular dentin
Option D: Tertiary dentin
Correct Answer: Mantle dentin ✔
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Fluid flow, in or out of the dentinal tubules is proportional to the tuble diameter by__________?
Option A: Third power of the diameter
Option B: Sixth power of the diameter
Option C: Square of the diameter
Option D: Fourth power of the diameter
Correct Answer: Fourth power of the diameter ✔
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Option A: Primary and secondary dentin
Option B: Secondary dentin and circumpulpal dentin
Option C: Tetiary dentin and sclerotic dentin
Option D: All of the above
Correct Answer: Tetiary dentin and sclerotic dentin ✔
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Option A: Enamel is harder than dentine
Option B: Enamel has no cells
Option C: Ameloblast secrete enamel and dentine
Option D: Odontoblast produce dentin
Correct Answer: Ameloblast secrete enamel and dentine ✔
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Option A: Sclerotic dentin
Option B: Mantal dentin
Option C: Interglobular dentin
Option D: Intertubular dentin
Correct Answer: Sclerotic dentin ✔
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Option A: Enamel
Option B: Dentin
Option C: Cementum
Option D: Bone
Correct Answer: Dentin ✔
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Option A: Direct neural stimulation
Option B: Fluid or hydrodynamic theory
Option C: Transduction theory
Option D: All of the above
Correct Answer: All of the above ✔
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Option A: Inter tubular dentin
Option B: Peritubular dentin
Option C: Circum pulpal dentin
Option D: Secondary dentin
Correct Answer: Circum pulpal dentin ✔
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Option A: Incineration/organic chelation
Option B: Decalcification
Option C: Devitrification
Option D: Combustion
Correct Answer: Incineration/organic chelation ✔
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Option A: Pulp
Option B: Dentin
Option C: Enamel
Option D: Cementum
Correct Answer: Dentin ✔
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Option A: Caries susceptible
Option B: Insensitive
Option C: Hypersensitive
Option D: Resistant to caries
Correct Answer: Resistant to caries ✔
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Option A: Failure of coalescence of calcospherities
Option B: Fracture of the dentin
Option C: Artifact in light microscopy
Option D: Disturbance in dentinal tubules
Correct Answer: Failure of coalescence of calcospherities ✔
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Option A: Peritubular dentin
Option B: Mantle dentin
Option C: Inter tubular dentin
Option D: Predentin
Correct Answer: Inter tubular dentin ✔
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Option A: With out but not with in the dentin
Option B: Odontoblastic processes in dental tubules
Option C: Type of sharpey’s fibres
Option D: Originate from tome’s granular layer
Correct Answer: Odontoblastic processes in dental tubules ✔
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Option A: Mantle dentin
Option B: Secondary dentin
Option C: Reactionary dentin
Option D: Indeed dermal tubules
Correct Answer: Mantle dentin ✔
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Option A: Sclerotic dentin
Option B: Mantle dentin
Option C: Predentin
Option D: Osteodentin
Correct Answer: Osteodentin ✔
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Option A: Lamina propria
Option B: Lamina lucida
Option C: Lamina limitans
Option D: Lamina densa
Correct Answer: Lamina limitans ✔
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Option A: Cementoblasts
Option B: Fibroblasts
Option C: Odontoblasts
Option D: Osteoblasts
Correct Answer: Odontoblasts ✔
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Option A: Enamel (anterior teeth)
Option B: Enamel (Posterior teeth)
Option C: Dentin
Option D: Dentinoenamel junction
Correct Answer: Dentin ✔
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Option A: Direct activation of nerve endings
Option B: Correlated with the innervation density of the dentin
Option C: Stimulus induced fluid flow
Option D: There is no transmission of stimulus across dentin
Correct Answer: Stimulus induced fluid flow ✔
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Option A: Enamel forms more cervically than dentin
Option B: Enamel forms faster than dentin
Option C: Dentin forms faster than enamel
Option D: Processes of their cells remain in content with each other
Correct Answer: Dentin forms faster than enamel ✔
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Option A: Greater stainability
Option B: Lasser content of inorganic salts
Option C: greater content of inorganic salts
Option D: Greater content of large collagen fibres
Correct Answer: greater content of inorganic salts ✔
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Option A: Smear layer
Option B: Fluid convection
Option C: Length of dentinal tubules
Option D: Diffusion coefficient
Correct Answer: Fluid convection ✔
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Option A: 0.2-0.5 microns
Option B: 2-3 microns
Option C: 0.2-0.3 microns
Option D: 7 microns
Correct Answer: 2-3 microns ✔
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Option A: Inner pulpal layer contains more dentinal tubules than outer dentin layer
Option B: The diameter of dentin tubules ranges from 5 to 7μm
Option C: The diameter of dentinal tubule is more at pulpal layer than outer layer
Option D: The bonding is more on the inner layer of dentin compared to outer surface
Correct Answer: The diameter of dentin tubules ranges from 5 to 7μm ✔
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Option A: Incremental deposition
Option B: Peritubular dentin
Option C: Crowding of odontoblasts
Option D: Due to excess amount of organic component
Correct Answer: Crowding of odontoblasts ✔
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Option A: Sclerotic dentin
Option B: Secondary dentin
Option C: Reparative dentin
Option D: All of the above
Correct Answer: Secondary dentin ✔
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Option A: Sclerotic dentin
Option B: Primary dentin
Option C: Secondary dentin
Option D: Interglobular dentin
Correct Answer: Sclerotic dentin ✔
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Option A: Each rod is formed by 4 ameloblasts
Option B: Each ameloblast contributes to 4 different rods
Option C: Head of the rod is formed by one ameloblasts, and tail is formed by three other ameloblasts
Option D: All of the above
Correct Answer: All of the above ✔
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Option A: Incremental lines of retzius
Option B: Incremental lines of vonebner
Option C: Contour lines of owen
Option D: None of the above
Correct Answer: Contour lines of owen ✔
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Option A: Ca3 (Po4)2 CaCo3
Option B: 3Ca (Po4)2 Ca(OH)2
Option C: CaPo4 Ca(OH)2
Option D: None of the above
Correct Answer: 3Ca (Po4)2 Ca(OH)2 ✔
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Option A: Bone
Option B: Acellular cementum
Option C: Enamel
Option D: None of the above
Correct Answer: Bone ✔
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Option A: Enamel cannot form in absence of dentin
Option B: The formation of enamel and dentin are independent of each other
Option C: Enamel formation can occur in absence of dentin
Option D: None of the above
Correct Answer: Enamel cannot form in absence of dentin ✔
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Option A: 1/2 that of enamel
Option B: 1/7 that of enamel
Option C: 1/4 that of enamel
Option D: 1/5 that of enamel
Correct Answer: 1/4 that of enamel ✔
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Option A: Pulpal end
Option B: Cusp tip
Option C: Tooth bud stage
Option D: Cervical area
Correct Answer: Cusp tip ✔
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Option A: Mantle dentin
Option B: Circumpulpal dentin
Option C: Predentin
Option D: Secondary dentin
Correct Answer: Predentin ✔
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