MDS Entrance Exam Questions with solution. These test are dedicated to all MDS Entrance Aspirants. Keep on practicing our exam series. Here we have 200 question based on syllabus provided by Medical Education Committee from all subject that are covered in Bachelor of Dental Surgery. Send us feedback via message or mail so that we can improve our exams. Those who want to participate in live test please click her
51.
Which of the following headgear is preferred while treating a class II div. 1 malocclusion with a horizontal growth trend?1 Mark
| A. High pull head gear | B. Cervical head gear |
| C. Medium pull head gear | D. Reverse pull head gear |
52.
Contraindications of activator include1 Mark
| A. Crowding cases | B. Non – growing individuals |
| C. Vertical growers with high FMA angle | D. All of the above |
53.
Pendulum appliance is used for?1 Mark
| A. Distalisation of molars | B. Derotation |
| C. Uprighting | D. Correcting open bite |
54.
Which of the following cements provide maximum resistance to enamel calcification,when used with molar brands?1 Mark
| A. GIC | B. Zinc phosphate |
| C. Zinc polycarboxylate | D. Silicate |
55. Decalcification and discoloration of teeth occurs during orthodontic treatment due to:1 Mark
| A. Acid etching | B. Poor oral hygiene |
| C. Leakage of cement around bands | D. All of the above |
56. Preventive and interceptive orthodontics is no longer viable after eruption of1 Mark
| A. Permanent second molars | B. Primary second molars |
| C. Permanent first molar | D. Permanent lateral incisors |
57. A 12-year-old boy was subjected to rapid maxillary expansion (RME) for the correction of bilateral posterior cross bite. The Maximum separation of the mid palatine suture will occur1 Mark
| A. In the molar region | B. In the premolar region |
| C. At posterior nasal spine | D. Between two central incisors |
58. Bakers anchorage is a type of1 Mark
| A. Intra maxillary anchorage | B. Inter maxillary anchorage |
| C. Extra oral anchorage | D. Muscular anchorage |
59.
Frontal resorption is caused due to:1 Mark
| A. Light continuous force | B. Heavy continuous force |
| C. Heavy interrupted force | D. Light interrupted force |
60. Which of the following is most common trigger factor for BRUXISM?1 Mark
| A. Temporomandibular joint dysfunction | B. Pericoronitis |
| C. Discrepancy between centric relation and centric occlusion | D. Acute periodontal disease |
61.
The first forming microbial elements of plaque are:1 Mark
| A. aerobic gram positive | B. aerobic gram negative |
| C. anaerobic gram negative | D. spirochetes |
62. The PDL contains mainly which collagen:1 Mark
| A. type1 and type 2 | B. type 1 and type 3 |
| C. type 2 and type 3 | D. type 1 and type 4 |
63. Width of attached gingiva is least in:1 Mark
| A. mandibular incisors lingually | B. mandibular incisors labially |
| C. mandibular premolars | D. A and C |
64.
Periodontitis is defined as localised when1 Mark
| A. less than 30% of sites are affected | B. 30% of sites are affected |
| C. more than 30% of sites are affected | D. none of the above |
65. Which of the following are etiological factor for gingivitis1 Mark
| A. phenytoin | B. leukaemia |
| C. protein deficiency | D. all the above |
66.
Gingival recession may be associated with which of thefollowing?1 Mark
| A. Advancing periodontal disease | B. Position of the tooth in the arch |
| C. Mucogingival involvement caused by frenum pull | D. Occlusal traumatism |
| E. All of the above | |
67. Tooth # 24 has 3mm. of exposed lingual root as measuredby a probe from the CEJto the freegingival margin. Your periodontal diagnosisis:1 Mark
| A. Gingivitis | B. Fenestration |
| C. Gingival enlargement | D. Gingival abscess |
| E. Recession | |
68.
Generalized diffuse gingivitis includes the following periodontal tissue:1 Mark
| A. Attached gingiva. | B. Interdental gingiva |
| C. Marginal gingiva | D. Alveolar mucosa |
| E. All of the above | |
69.
During an acute gingival inflammatory response, which of the following cell types can destroy virulent bacteria by phagocytosis and T-cell mediation?1 Mark
| A. Plasma cell | B. B lymphocyte |
| C. Mast cell | D. Macrophage |
| E. Polymorphonuclear leukocyte | |
70.
Fenestration primarily occurs:
1. In lingual bone rather than facial bone.
2.Where facial buttressing bone is heavy apically.
3. Where a root is facially prominent in the arch.
4. Where the denuded root area is located apical to the marginal bone.
1 Mark
| A. 1, 2, 3, 4 | B. 1 and 3 |
| C. 2 and 3 | D. 3 and 4 |
| E. 1 only | |
71. Clinical research reports that of erupted teeth have a partial absence of cervical cementum forming a space of exposed dentin.This exposed dentin space may be associated with an increased incidence of caries and root sensitivity.1 Mark
| A. 5-10 % | B. .30-50 % |
| C. 60-65 % | D. over 65 % |
72. Gingival bleeding with gentle probing may be associated with which of the following?
1 Mark
| A. Chronic gingivitis | B. Overzealous tooth brushing |
| C. Leukemias | D. Violation of the biologic width |
| E. All of the above | |
73. Which of the following histologic structures are generally absent within the periodontal ligament?1 Mark
| A. angioblasts and undifferentiated cells | B. mylenated nerve fibers |
| C. interstitial spaces | D. fibronectin |
| E. mature elastic fibers | |
74.
Tooth number 25 has a non-keratinized gingival margin and probes 5 mm loss of attachment from the CEJ. There is facial alveolar mucosal elastic pull associated the pull of the mandibular labial frenum. These presented diagnostic findings are consistent with a diagnosis of:1 Mark
| A. Hyperplatic gingivitis | B. Gingival recession |
| C. Mucogingival defect | D. None of the above |
75.
Dental instrument used with a ‘Push’ motion is1 Mark
| A. Hoe | B. Chisel |
| C. Curette | D. Sickle scaler |
76. Reciprocal arm is:1 Mark
| A. Rigid and in the middle third of abutment | B. Rigid and in occlusal third of abutment |
| C. Flexible and in middle third of abutment | D. Flexible and in occlusal third of abutment |
77. The distance between upper and lower sulcus in edentulous patient is:1 Mark
| A. 38mm | B. 40mm |
| C. 42mm | D. 45mm |
78. Fins and spines on the casting is seen due to:1 Mark
| A. Prolonged heating | B. Rapid heating rate |
| C. Water film contamination on casting | D. Too high pressure during casting |
79. Surface roughness of elastomeric impression results from:1 Mark
| A. Inadequate mixing | B. Non rinsing of oral cavity by patient before the impression |
| C. Too rapid polymerization | D. Cold mixing zone |
80. Which zone of flame is used for melting metal alloys?1 Mark
| A. Reducing zone | B. Combustion zone |
| C. Oxidizing zone | D. Cold mixing zone. |
81. Which of the following influences the working time of dental plaster:1 Mark
| A. Presence of gypsum in dental plaster | B. Increase in water powder ratio |
| C. More rapid mixing of plaster | D. Using warm water for mixing of powder. |
82. Clicking sound in CD is due to:1 Mark
| A. Insufficient occlusal clearance | B. Insufficient vertical distension |
| C. Increased vertical dimension of rest | D. Reduced vertical dimension of occlusion |
83. A patient is an excellent health wearing CD, complains of burning sensation in anterior palate, may be due to:1 Mark
| A. Nicotinamide deficiency | B. Defective occlusal content |
| C. Failure to relieve incisive papilla | D. Excessive thickness in rugal area. |
84. An increase in VDO or vertical dimension of occlusion causes:1 Mark
| A. Sagging of corners | B. Traumal injury to the adjacent structured |
| C. Candidial infections | D. Perleche |
85. Most common cause of cheek biting with denture is:1 Mark
| A. Porcelain denture teeth | B. Absence of buccal horizontal overlap |
| C. Crossbite relationship of posterior teeth | D. Complete denture-partial denture combination |
86.
Maxillarydenture fracture in mid-palatal areas, most common cause is:1 Mark
| A. Very thin acrylic resin | B. Excessive forceful bite |
| C. Excessive resorption of alveolar ridge | D. None |
87. Mandibular major connector used in tongue tie patient is:1 Mark
| A. Lingo-palate | B. Cingulum plate |
| C. Sublingual bar | D. Lingual bar |
88. Vertical facial height is measured through:1 Mark
| A. Wills gauge | B. Boley’s gauge |
| C. Boos bimeter | D. All of the above |
89. Most commonly affected sound if maxillary incisor teeth are anteriorly placed:
1 Mark
| A. Ch | B. F |
| C. v | D. s |
90. The lingual flange of mandibular denture is
1 Mark
| A. Straight | B. Concave |
| C. Convex | D. Convex and extending towards base of tongue. |
91. An 8 years old boy presents with class III fracture of tooth # 11, which appeared an hour ago, the apex is not closed. Your treatment should be:1 Mark
| A. Direct pulp capping with Ca (OH)2. | B. Pulpectomy follows by RCT. |
| C. Pulpotomy and fill with Ca (OH)2 | D. Smoothening of ledges and restore with composite |
| E. Restoration with Glass ionomer cement | |
92. A young 12 years old boy presents with reddish over-growth of tissue, protending from carious exposure in lower molar. What may be the possible diagnosis?1 Mark
| A. Pulp polyp | B. Pulpal hyperemia . |
| C. Varicosed polyp. | D. Pulpal granuloma |
| E. Gum boil. | |
93. Which of the following is the appropriate file for removing gutta-percha from root canals?1 Mark
| A. K file | B. H file |
| C. Flexo file . | D. S file. |
| E. Rat tail type. | |
94. A patient presents with a draining sinus tract in labial vestibule of a maxillary central incisor. To confirm your diagnosis about the origin of pathoses you should:1 Mark
| A. Open the concerned root chamber. | B. Taking the bite-wing radiograph. |
| C. Thread gutta-percha through the root canal and expose the radiograph | D. Thread the gutta-percha through the tract and expose a radiograph. |
| E. Measure the periodontal packet | |
95. While examining the RCT done by other dentist, you find acase where the radiograph shows densely packed gutta-percha in coronal third but poorly packed in apical third, the most likely cause is:1 Mark
| A. Excessive packing of dentine chips in apical one thuid. | B. Failure to coat accessing cones with sealers . |
| C. Failure to obtain proper depth of penetration with compacting instrument. | D. Tool much root canal sealer. |
| E. Use of accessory cones with fine tips. | |
96. In RCT, over preparation of the outer wall of the optical curvature of the canal within flexible instrument will cause:1 Mark
| A. Zipping. | B. Perforation. |
| C. Elbow formation. | D. Ledge formation. |
| E. Crazing.. | |
97. For the extripation of entire pulp, necrotic debris, and foreign material, one should use:1 Mark
| A. Raemers. | B. Files. |
| C. Barbed broaches. | D. Burs |
| E. Plain broaches | |
98. Pain on percussion before endodontic treatment indicates:1 Mark
| A. Reversible pulpitis. | B. Irreversible pulpitis |
| C. Pulp necrosis. | D. Inflammation of periodontal tissues |
| E. Exposed dentine. | |
99. Senile carious lesions are most commonly found exclusively on the following areas of the teeth:1 Mark
| A. Pits and fissures | B. Occlusal, incisal, facial and lingual embrasures. |
| C. Inclined planes of cusps | D. Root surfaces of teeth. |
| E. Interdental surfaces. | |
100. The most widely used irrigant displaying optimal cleansing bactericidal properties is:
1 Mark
| A. Formocresol. | B. Sodium Hypochlorite. |
| C. Saline. | D. Hydrogen peroxide |
| E. Gulteraldehyde |
