MCQOPTIONS
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MCQOPTIONS
This section includes 370 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Thin leaf like structures that extend from enamel surface in to DEJ are____________? |
| A. | Enamel spindles |
| B. | Enamel lamella |
| C. | Enamel tufts |
| D. | Perikymata |
| Answer» C. Enamel tufts | |
| 52. |
The zone of dentin most recently formed and uncalcified is known as____________? |
| A. | Mantle dentin |
| B. | Circumpulpal dentin |
| C. | Predentin |
| D. | Secondary dentin |
| Answer» D. Secondary dentin | |
| 53. |
The vermilion border requires frequent moistening because_____________? |
| A. | It contains more No. of sweat glands |
| B. | It contains more do. of sebaceous glands |
| C. | It contains less number of sebaceous glands |
| D. | It contains less number of sweat glands |
| Answer» D. It contains less number of sweat glands | |
| 54. |
The vascular supply of the periodontal ligament is______________? |
| A. | Greatest in the middle-third of a single rotted tooth |
| B. | Greatest in the middle-third of a multirooted tooth |
| C. | A net like 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 |
| Answer» E. | |
| 55. |
The type of tertiary dentin which contains cellular inclusions is found in_____________? |
| A. | Sclerotic dentin |
| B. | Mantle dentin |
| C. | Predentin |
| D. | Osteodentin |
| Answer» E. | |
| 56. |
The type of fibrous element in enamel is_____________? |
| A. | Tono filament |
| B. | Keratin like fibre |
| C. | Collagen fibre |
| D. | Vimentin filament |
| Answer» C. Collagen fibre | |
| 57. |
The type of epithelium lining maxillary sinus is_______________? |
| A. | Simple columnar |
| B. | Pseudo stratified columnar and cilliated |
| C. | Stratified squamous |
| D. | Simple squamous |
| Answer» C. Stratified squamous | |
| 58. |
The type of dentin that is formed prior to root completion______________? |
| A. | Inter tubular dentin |
| B. | Peritubular dentin |
| C. | Circum pulpal dentin |
| D. | Secondary dentin |
| Answer» D. Secondary dentin | |
| 59. |
The type of bone present in the labial area of anterior teeth is_________________? |
| A. | Cortical |
| B. | Cancellous |
| C. | Osteophytic |
| D. | Exophytic |
| Answer» B. Cancellous | |
| 60. |
The type of bone present in the labial area of anterior teeth is_______________? |
| A. | Cortical |
| B. | Cancellous |
| C. | Osteophytics |
| D. | Exophytic |
| Answer» B. Cancellous | |
| 61. |
The total volumes of all permanent pulp organ______________? |
| A. | 0.38 cc |
| B. | 0.58 cc |
| C. | 0.02 cc |
| D. | 3.8 cc |
| Answer» B. 0.58 cc | |
| 62. |
The tooth present close to maxillary sinus is_________________? |
| A. | 1st molar |
| B. | 2nd premolar |
| C. | 1st premolar |
| D. | 2nd molar |
| Answer» B. 2nd premolar | |
| 63. |
The thinnest epithelium of oral cavity is found in the____________? |
| A. | Buccal gingiva |
| B. | Lingual gingiva |
| C. | Oral surface of lip |
| D. | Sublingual mucosa (floor of mouth) |
| Answer» E. | |
| 64. |
The thickness of prismless enamel in diciduous teeth is______________? |
| A. | 25 μ m |
| B. | 50 μ m |
| C. | 75 μ m |
| D. | 100 μ m |
| Answer» B. 50 μ m | |
| 65. |
The successors of deciduous teeth develops form_______________? |
| A. | Successional lamina |
| B. | Dental lamina |
| C. | Stellate reticulum |
| D. | Neutral ectodermal cells |
| Answer» B. Dental lamina | |
| 66. |
The striking difference between enamel and other mineralized tissues is______________? |
| A. | Presence of high percentage of organic matrix |
| B. | Presence of incremental lines |
| C. | Enamel has high reparative capacity |
| D. | Most of organic component is lost during mineralization |
| Answer» E. | |
| 67. |
The small ridges, perikymata, seen on facial surfaces of canines are the result of_____________? |
| A. | Hyperplasia |
| B. | Hypoplacification |
| C. | Normal development |
| D. | Interstitial development |
| Answer» D. Interstitial development | |
| 68. |
The size of apical foramen of maxillary teeth in adult is______________? |
| A. | 0.4 mm |
| B. | 0.3 mm |
| C. | 0.2 mm |
| D. | 0.7 mm |
| Answer» B. 0.3 mm | |
| 69. |
The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ? |
| A. | Cracks |
| B. | Pellicle |
| C. | perikymata |
| D. | Enamel lamellae |
| Answer» D. Enamel lamellae | |
| 70. |
The rest of malassez in the periodontal ligament are derived from_____________? |
| A. | Dental pulp |
| B. | Lamina propria |
| C. | Odontogenic epithelium |
| D. | Vestibular lamina |
| Answer» D. Vestibular lamina | |
| 71. |
The relationship between the pulpal and periodontal tissue complex begins during dental development at_____________? |
| A. | Adolescent stage |
| B. | 5-10 years |
| C. | Embryonic stage |
| D. | None of the above |
| Answer» D. None of the above | |
| 72. |
The region in which cementum formation is most rapid is_____________? |
| A. | Middle |
| B. | Coronal |
| C. | Apical |
| D. | Interradicular |
| Answer» B. Coronal | |
| 73. |
The red zones of lips have_____________? |
| A. | 30% Sebaceous glands |
| B. | 75% sebaceous glands |
| C. | very small number of sebaceous glands, if any |
| D. | Absolutely no sebaceous glands |
| Answer» D. Absolutely no sebaceous glands | |
| 74. |
The range of level of fluoride secreted by the glands into the mouth is_____________? |
| A. | 0.004-0.005 ppm |
| B. | 0.006-0.007 ppm |
| C. | 0.007-0.005 ppm |
| D. | 0.007-0.08 ppm |
| Answer» D. 0.007-0.08 ppm | |
| 75. |
The radicular pulp is continous with tissues of the periapical area via the____________? |
| A. | Pulp canal |
| B. | Pulp chamber |
| C. | Mental foramen |
| D. | Apical foramen |
| Answer» E. | |
| 76. |
The process of recesses formation in maxillary sinus is most frequently seen with________________? |
| A. | Zygomatic process |
| B. | Frontal process |
| C. | Alveolar process |
| D. | Palatine process |
| Answer» D. Palatine process | |
| 77. |
The primary response of the pulp to tissue destruction is_______________? |
| A. | Necrosis |
| B. | Ulceration |
| C. | Calcific degeneration |
| D. | Inflammation |
| Answer» E. | |
| 78. |
The primary function of the dental pulp is____________? |
| A. | Nutritive |
| B. | Production of dentin |
| C. | Production of enamel |
| D. | Vascular supply to the teeth |
| Answer» C. Production of enamel | |
| 79. |
The position of mucogingival line____________________? |
| A. | Shifts apically with age |
| B. | Shifts coronally with age |
| C. | Constant throughout the life |
| D. | None of the above |
| Answer» D. None of the above | |
| 80. |
The plexus of Rashkov is present in which of the following zones in pulp ? |
| A. | Cell free zone |
| B. | Cell rich zone |
| C. | Odontoblastic zone |
| D. | Pulp core |
| Answer» B. Cell rich zone | |
| 81. |
The periodontal ligament_____________? |
| A. | Derives its blood supply 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 |
| Answer» D. Comprises primarily of type II collagen | |
| 82. |
The periodontal ligament is approximately_____________? |
| A. | 0.25 mm in thickness |
| B. | 0.5 mm in thickness |
| C. | 0.75 mm in thickness |
| D. | mm in thickness |
| Answer» B. 0.5 mm in thickness | |
| 83. |
The percentage of inorganic matter in fully developed enamel is about____________? |
| A. | 66% |
| B. | 76% |
| C. | 86% |
| D. | 96% |
| Answer» E. | |
| 84. |
The pain transmission through dentin is______________? |
| A. | Direct neural stimulation |
| B. | Fluid or hydrodynamic theory |
| C. | Transduction theory |
| D. | All of the above |
| Answer» E. | |
| 85. |
The organic lining of the calcified dentinal tubules is known as_______________? |
| A. | Lamina propria |
| B. | Lamina lucida |
| C. | Lamina limitans |
| D. | Lamina densa |
| Answer» D. Lamina densa | |
| 86. |
The oral epithelium is attached to the enamel via_______________? |
| A. | Reticular fibers |
| B. | Collagen fibers |
| C. | Hemidesmosomes |
| D. | Desmosomes |
| Answer» D. Desmosomes | |
| 87. |
The odontoblasts killed during cavity preparation are derived from_____________? |
| A. | Unaffected odontoblasts from the pulp |
| B. | Undifferentiated cells |
| C. | Histocytes |
| D. | Osteoblasts |
| Answer» C. Histocytes | |
| 88. |
The number of pulp organs in a person in___________? |
| A. | 32 |
| B. | 50 |
| C. | 52 |
| D. | 62 |
| Answer» D. 62 | |
| 89. |
The normal pH of the saliva is about_____________? |
| A. | 5.5 |
| B. | 9.5 |
| C. | 7.5 |
| D. | 8.5 |
| Answer» D. 8.5 | |
| 90. |
The neutralization of saliva is due to______________? |
| A. | Mucin |
| B. | Ammonia |
| C. | Amino acids |
| D. | Bicarbonates |
| Answer» E. | |
| 91. |
The muscle which is commonly involved in myofacial pain dysfunction syndrome______________? |
| A. | Lateral ptergoid |
| B. | Massetor |
| C. | Temporalis |
| D. | Medial pterygoid |
| Answer» B. Massetor | |
| 92. |
The mucous membrane of cheeks and lips_____________? |
| A. | It attached to buccinator muscle in cheeks |
| B. | It attached to orbicularis oris in lips |
| C. | A & B are correct |
| D. | None of the above |
| Answer» D. None of the above | |
| 93. |
The most accepted theory for dentin sensitivity is: or Which of the following is the most accepted theory of transmission of dental sensation_____________? |
| A. | Transduction theory |
| B. | Direct neural stimulation |
| C. | Hydrodynamic theory |
| D. | Hydrostatic theory |
| Answer» D. Hydrostatic theory | |
| 94. |
The most abundant principle fibre group in periodontal ligament is____________? |
| A. | Horizontal |
| B. | Transeptal |
| C. | Apical |
| D. | Oblique |
| Answer» E. | |
| 95. |
The most accepted theory of tooth eruption is____________? |
| A. | Hydrodynamic theory |
| B. | Clone theory |
| C. | Periodontal ligament traction theory |
| D. | Vascular theory |
| Answer» D. Vascular theory | |
| 96. |
The most abundant group of fibres in the PDL are_____________? |
| A. | Trans-septal |
| B. | Horizontal |
| C. | Oblique |
| D. | Apical |
| Answer» D. Apical | |
| 97. |
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 |
| Answer» D. 1/5 that of enamel | |
| 98. |
The maximum rate of eruption, as the tooth cusps reach the surface epithelium is around ________ μm/day? |
| A. | 100 |
| B. | 75 |
| C. | 50 |
| D. | 25 |
| Answer» C. 50 | |
| 99. |
The maxillary sinus______________? |
| A. | Opens in to the inferior meatus of nose |
| B. | Has the 1st molar projecting into its floor |
| C. | Is fully developed by the age of 8 years |
| D. | Has good drainage in upright position |
| Answer» C. Is fully developed by the age of 8 years | |
| 100. |
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 |
| Answer» E. | |