Free Oral Histology MCQs Mock Test Online with Answers

Q1 : Calcified tissue is absent in______________?

A: Enamel B: Dentin C: Cementum D: Pulp

Q2 : 1st formed dental tissue______________?

A: Enamel B: Dentin C: Cementum D: Bone

Q3 : Which of the following structures is not found in a living pulp ?

A: Collagen fibres B: Haversian fibres C: Non-myelinated nerve fibres D: Reticulum

Q4 : Jacobson’s organ is________________?

A: Auxillary olfactory sense organ B: Ellipsoid/Cigar shaped C: Undergoes degeneration after 4 months of intrauterine life D: All of the above

Q5 : Lamina densa of the gingival basement membrane is rich in_____________?

A: Type I and III collagen B: Type III collagen C: Type IV collagen D: Type I collagen

Q6 : Neonatal line is also referred to as______________?

A: Retzius line B: Line of cross striations C: Incremental lines D: Line of enamel tufts

Q7 : Color of the normal gingiva is_____________?

A: Pink B: Red C: Coral pink D: None of the above

Q8 : In cap stage, regulating factor for cusp shape formation is present in____________?

A: Dental papilla B: Dental follicle C: Inner enamel epithelium D: Enamel Knot

Q9 : Static bone cyst is a cyst developing from______________?

A: Infection of Salivary gland in the mandible B: Tissue of the odontogenic apparatus C: Tissue of the oral mucosa D: None of the above

Q10 : Which of the following is true of cellular cementum ?

A: Forms during root formation B: Forms after the eruption of the tooth C: Seen at the coronal portion of the tooth D: Formation is a slow process

Q11 : The primary function of the dental pulp is____________?

A: Nutritive B: Production of dentin C: Production of enamel D: Vascular supply to the teeth

Q12 : Propriceptors are seen in all except______________?

A: Skeletal muscle B: TMJ C: Pulp D: None of the above

Q13 : Calcium content of lamina dura is______________?

A: More than the other parts of alveolar bone B: Less than the other parts of alveolar bone C: Same as in other parts of alveolar bone D: Less than the cementum

Q14 : The cells, which are responsible for removal of bone matrix in bone resorption, are_____________?

A: Osteoblast B: Fibrocytes C: Polymorphs D: Osteoclasts

Q15 : Cellular cementum and compact bone contain____________?

A: Sharpehy’s fibres and elastic fibres B: Collagen fibres and blood vessels C: Canaliculi and incremental lines D: Lacunae and elastic fibres

Q16 : Buccal mucosa is_______________?

A: Keratinized B: Non-keratinized C: Parakeratinised D: Orthokeratinized

Q17 : Among various glands, salivary gland secretion is unique in that, its secretions is unique in that, its secretion are controlled by___________?

A: Hormones B: Nerves C: Chemicals D: All of the above

Q18 : One of the following statement is unique about circumpulpal dentine______________?

A: Collagen fibers are oriented perpendicular to DEJ B: Vonkorff fibers are present C: Contain phosphophoryn D: Requires matrix vesicle for mineralization

Q19 : Biomechanism that unites the epithelium to the tooth surface is_____________?

A: Internal basal lamina B: Junctional epithelium C: Reduced enamel epithelium D: Epithelial attachment

Q20 : Acellular cementum is typically found in_____________?

A: Coronal half of root B: Apical half of root C: Apex of root D: Entire root

Q21 : Sialography is used to detect anomaly of_______________?

A: Salivary duct only B: Salivary gland C: Salivary gland & duct D: Salivary gland tumours

Q22 : The key hole, pattern appearance in the cross section is feature of______________?

A: Aprismatic enamel B: Prismatic enamel C: Intertubular dentin D: Intratubular dentin

Q23 : Which of the following anomalies occur during the initiation and proliferation of tooth development ?

A: Amelogenisis imperfecta B: Dentinogenesis imperfecta C: Enamel hypoplasia D: Oligodontia

Q24 : The major cells seen in gingiva are______________?

A: Fibro blast B: Odontoblasts C: Cementoblasts D: Merkel cells

Q25 : Poorly defined zone near cemento-dentinal junction

A: 45 to 50% B: 50 to 55% C: 55 to 60% D: 60 to 65%

Q26 : Keratohyaline granules are found in________________?

A: St. granulosum B: St. spinosum C: St. basale D: Prickle cell layer

Q27 : Periodontal ligament has predominantly_________?

A: Type II collagen fibres B: Oxytalan fibres C: Elastic fibres D: Type I collagen fibres

Q28 : Protein secreted by odontoblast_____________?

A: Chitin B: Keratin C: Collagen D: Elastin

Q29 : Sharpey’s fibres are present in_______________?

A: Bone B: Periosteum C: Periodontal ligament D: All of the above

Q30 : The cell free zone in pulp lies____________?

A: Above odontoblast B: Below odontoblast C: In radicular pulp D: In pulp horn

Q31 : Ghon complex of the lung usually____________?

A: Undergoes cavitation B: Undergoes calcification C: Progresses to tuberculous pneumonia D: Progresses to military tuberculosis

Q32 : The pain transmission through dentin is______________?

A: Direct neural stimulation B: Fluid or hydrodynamic theory C: Transduction theory D: All of the above

Q33 : Dark bonds that are present in enamel rods at intervals of 4 μms are______________?

A: Neonantal bands B: Cross striations C: Striae of Retzius D: Hunter-Schregar bands

Q34 : Which of the following tissues have no reparative capacity______________?

A: Enamel B: Dentin C: Cementum D: Periodontal ligament

Q35 : Which of the following is a rare occurrence______________?

A: Enamel meet cementum at a point B: Enamel overlaps cementum C: Cementum overlaps enamel D: Both never meet

Q36 : The cells of the dental pulp which are responsible for the deposition of reparative dentin are_________?

A: Osteoblasts B: Odontoblasts C: Ameloblasts D: Osteocytes

Q37 : Mucin in mucous cells usually demonstrated by______________?

A: PAP stain B: H & E stain C: Mucicarmine stain D: Mallory stain

Q38 : Which of the following is not an ecto-mesenchymal derivative ?

A: Dentin B: Cementum C: Pulp D: Enamel

Q39 : Tooth develops from_______________?

A: Ectoderm, mosoderm B: Ectoderm C: Mesoderm D: Ectoderm and endoderm

Q40 : The type of fibrous element in enamel is_____________?

A: Tono filament B: Keratin like fibre C: Collagen fibre D: Vimentin filament

Q41 : A suitable fixative for a routine biopsy specimen is_____________?

A: 10% formalin B: 40% formalin C: 20% formalin D: 10% alcohol

Q42 : Fibres which continue from bone to ligament are_____________?

A: Sharpey’s fibres B: Tome’s fibres C: Ray’s fibres D: All of the above

Q43 : Group of fibres, which resist the masticatory forces___________?

A: Dentogingival B: Transeptal C: Oblique D: Horizontal

Q44 : Which of the following statement is correct_________________?

A: In cross sections enamel rods appear hexagonal and resembles fish scales B: The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically C: The apatite crystals are parallel to bodies and deviate 65° from the tails D: All of the above

Q45 : Narrowing of periodontal 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 fibres

Q46 : The earliest response of pulpitis is:__________?

A: Cyst formation B: Calcification C: Hyalinization D: Formation of dental granuloma

Q47 : Trauma or excessive occlusal forces causes_____________?

A: Hyperplasia of cementum B: Hypertrophy of cementum C: Resorption of cementum D: None of the above

Q48 : The bud, cap and bell stage of the developing tooth are based, on growth of the______________?

A: Stellate reticulum B: Dental papilla C: Enamel organ D: Dental sac

Q49 : The oral epithelium is attached to the enamel via_______________?

A: Reticular fibers B: Collagen fibers C: Hemidesmosomes D: Desmosomes

Q50 : Bone adjacent to periodontal ligament that contains a great number of sharpey’s fibres is known as______________?

A: Lamina dura B: Bundle bone C: Lamina propria D: Lamina densa

Q51 : Width of the periodontal ligament is least at______________?

A: Cervical third B: Cervical third C: Fulcrum of rotation D: It has uniform width

Q52 : Pericytes are found___________?

A: In thymus B: Around capillaries of pulp C: In gallbladder D: Along with heparin on surface of mast cells

Q53 : Following is derivative of dental lamina____________?

A: Epithelial rests of Malassez B: Enamel pearls C: Rests of serrae D: All of the above

Q54 : In a dried skull, holes on the lingual aspects of the deciduous teeth are called_____________?

A: Volkmann canals B: Canals of Hirchfeld and Zuckerland C: Herversian canals D: Gubernacular canals

Q55 : S shape of dentinal tubules is due to______________?

A: Incremental deposition B: Peritubular dentin C: Crowding of odontoblasts D: Due to excess amount of organic component

Q56 : Fibres which continue from bone to ligament are_______________?

A: Sharpey’s fibres B: Tome’s fibres C: Ray’s fibres D: All of the above

Q57 : Vitality of pulp depends on________________?

A: Blood supply B: Nerve supply C: Nerve supply D: All of the above

Q58 : Temporary structures in enamel organ are (before enamel formation) ?

A: Enamel knot Enamel cord B: Enamel cord C: Both A and B D: Enamel Cuticle

Q59 : The odontoblasts killed during cavity preparation are derived from_____________?

A: Unaffected odontoblasts from the pulp B: Undifferentiated cells C: Histocytes D: Osteoblasts

Q60 : Merkel cells are found in which of the following tissue ______________?

A: Epidermis B: Papillary layer of dermis C: Reticular of dermis D: Hypodermis

Q61 : Exfoliative cytology is indicated in___________?

A: Heavily keratinized lesions of oral cavity B: Pro-cancerous lesions of oral cavity C: Cigarette smokers D: Mass screening of cervical cancer

Q62 : The formation of which of the following does not represent normal physiologiacl process of dentin formation_______________?

A: Primary and secondary dentin B: Secondary dentin and circumpulpal dentin C: Tetiary dentin and sclerotic dentin D: All of the above

Q63 : Gubernacular canal guides the eruption of_____________?

A: Primary teeth B: Permanent teeth C: Both A and B D: None of the above

Q64 : The formative cells of which of the following dental tissues disappear once tissue is formed___________?

A: Enamel B: Dentin C: Periodontal ligament D: Cementum

Q65 : Which of the following is correct about serous glands_____________?

A: They are specialized for the synthesis, storage and secretion of proteins B: B. They contain secretory granules in the apical Cytoplasm and the secretion of granule content occurs by exocrytosis C: Serous cells are pyramidal in shape D: All of the above

Q66 : Movement of tooth to close the intermaxillary gap during eruption is due to____________?

A: Physiological tooth migration B: Active eruption C: Passive eruption D: None of the above

Q67 : Haversion systems (osteons) are found primarily in the_________________?

A: Spongy bone B: Periosteum C: Alveolar bone proper D: Endosteum

Q68 : The marrow found in the mandible is____________?

A: All fatty marrow B: All red marrow C: All fibrous marrow D: A combination of fatty and fibrous marrow

Q69 : Vonebners gland are_______________?

A: glands at apex of tongue B: Posterior lingual mucous glands C: Posterior lingual serous glands D: Glosso palatine glands

Q70 : Pain originate in the pulp due to_________?

A: free nerve ending in cell rich zone B: free nerve ending at sub odontoblastic layer C: Krause bulb at the center of the pulp D: Meisseners corpuscles at cell rich zone

Q71 : Bone at forming stage has_________________?

A: Osteoclasts, osteoblasts, osteoid B: Odontoblasts & megakaryocyte C: Megakaryocytes, osteoblasts, osteoclasts D: None of the above

Q72 : The microhardness of dentin is about____________?

A: 1/2 that of enamel B: 1/7 that of enamel C: 1/4 that of enamel D: 1/5 that of enamel

Q73 : Chronic hyperplastic pulpitis is:__________?

A: Necrotizing B: Suppurative lesion C: proliferation of a chronically inflamed pulp D: Also called as phoenix abscess

Q74 : True about direction of enamel rods______________?

A: They originate at right angle to dentin surface B: They are almost vertical near the incisal edge (or) cusp tip areas C: In cervical region of permanent teeth, they deviate in apical direction D: All of the above

Q75 : narled enamel is seen in_____________?

A: Proximal surface of tooth B: Cervical region of tooth C: Cusp tips of tooth D: All of the above

Q76 : Ectodermal cells in tooth bud are responsible for_______________?

A: Determination of shape of crown and root B: Formation of periodontal ligament C: Formation of cementum D: Formation of pulp

Q77 : The deciduous teeth can be differentiated from permanent teeth by_____________?

A: Enamel prismatic arrangement B: Dentinal tubule arrangement C: Primary and secondary dentin D: Mineral content

Q78 : The most common odontogenic cyst is:____________?

A: Primordial cyst B: Dentigerous cyst C: Radicular cyst D: Mucocele

Q79 : Ions participating in clotting mechanism are________________?

A: Iron B: Copper C: Calcium D: Aluminum

Q80 : The dentin adjacent to the dentinoenamel junction is called the______________?

A: Mantle dentin B: Circumpulpal dentin C: Predentin D: Secondary dentin

Q81 : Stratum germinatum is_______________?

A: Stratum basale B: Stratum granulosum C: Stratum basale and parabasal spinous cells D: Stratum spinosum

Q82 : Intermediate cementum is____________?

A: Highly defined cellular zone near cemento – dentinal junction (CDJ) B: Highly defined fibrillar zone near CDJ C: Poorly defined zone near cemento-dentinal junction D: Both a and B

Q83 : Regarding teeth which statement is wrong ?

A: Enamel is harder than dentine B: Enamel has no cells C: Ameloblast secrete enamel and dentine D: Odontoblast produce dentin

Q84 : The components of future TMJ shows development at_____________?

A: 6 weeks B: 18 weeks C: 10 weeks D: 16 weeks

Q85 : The primary cause of acantholysis in pemphigus vulgaris is___________?

A: auto immunity B: Intercellular oedema C: intra epithelial oedema D: chronic alcoholism

Q86 : Extracted teeth should be preserved in_____________?

A: Saline B: Xylene C: 10% Formalin D: 10% alcohol

Q87 : The calcified mass found in the PDL are_____________?

A: Cementicles B: Osteoblasts C: Cementoclasts D: Osteoclasts

Q88 : Frozen sections can be used for the demonstration of_____________?

A: Fat B: Mucin C: Cartilage D: Iron

Q89 : Unmyelinated nerve fibres of pulp are____________?

A: Sensory in nature B: Respond to hot and cold C: carry pain sensation D: Associated with blood vessels and are sympathetic in nature

Q90 : Which of the following is least mineralized ?

A: Cementoid B: Incremental line C: Cellular cementum D: Acellular cementum

Q91 : Stratum Germinativum of the oral epithelium is the term given to_______________?

A: Basal cell layer B: Granular cell layer C: Spinous cells and granular cells D: Basal cells and parabasal spinous cells

Q92 : Transmission of stimulus across dentin is______________?

A: Direct activation of nerve endings B: Correlated with the innervation density of the dentin C: Stimulus induced fluid flow D: There is no transmission of stimulus across dentin

Q93 : Enamel can act in a sense like a_______________?

A: Permeable membrane B: Impermeable membrane C: Semipermeable membrane D: Infrapermeable membrane

Q94 : https://pakmcqs.com/medical-mcqs/oral-histology/age-changes-in-periodeontal-ligament-include-which-of-the-following

A: Increased fibroplasia B: Increased vascularity C: Increased thickness D: Decreased in number of cementicles

Q95 : Metalloprotienases are used in which stage of the amelogenesis_____________?

A: Organising B: Formative/ Secretory C: Protective D: Desmolytic

Q96 : The articular cartilage is characterized by all of the following features except_____________?

A: It is devoid of perichondrium B: It has a rich nerve supply C: It is avascular D: It lacks the capacity to regenerate

Q97 : Formation of dentin by odontoblasts begins in_______________?

A: Morphogenic stage B: Organizing stage C: Desmolytic stage D: Formative stage

Q98 : The tooth present close to maxillary sinus is_________________?

A: 1st molar B: 2nd premolar C: 1st premolar D: 2nd molar

Q99 : The main function of horizontal fibres of P.D ligament is____________?

A: Prevent extrusion B: Prevent rotation C: Maintains the mesiodistal width D: All of the above

Q100 : Atypical or osteodentin is formed due to disturbance during____________?

A: Morphodifferentiation B: Histodifferentiation C: Apposition D: Initiation

Free Oral Histology MCQs Mock Test Online with Answers

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