Laboratory Technical Assistant Dental Technology 155/2014 Answer Key

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Post : Laboratory Technical Assistant Dental Technology
Department : Vocational Higher Secondary Education
Category Code : 155/2014
Question Paper Code : 58/2017/OL
Date of Test : 13-07-2017



  1. Rouge is used to polish
    • Glass ionomer
    • Amalgam
    • Composite resin
    • Noble metal alloys

  2. Back pressure porosity is caused by
    • Improper selection of investment
    • Entrapment of air
    • Incomplete feeding of molten alloy during casting
    • High casting pressure

  3. Dicor is
    • Chrome cobalt alloy
    • Double post core for posteriors
    • Castable glass ceramic
    • Die stone

  4. Brazing is done at
    • A temperature above 450°C
    • A temperature below 450°C
    • A temperature of 250°C
    • A temperature of 350°C

  5. The cross section of lingual bar major connector is
    • Half pear shaped
    • Pear shaped
    • Round shaped
    • Triangular shaped

  6. During surveying the height of contour is delineated by
    • Analysing rod
    • Under cut gauge
    • Carbon marker
    • Wax knife

  7. The gingival finish line preferred for full veneer metal crown is
    • Shoulder
    • Radial shoulder
    • Shoulder with bevel
    • Chamfer

  8. Tripoding of the cast is done for
    • Re orientation of the cast to surveyor
    • Re orientation of the cast to articulator
    • Recording the undercut area of the cast
    • Recording the undercut area of the tooth

  9. Gingivally approaching clasp are otherwise called
    • Ring clasp
    • Bar clasp
    • Onlay clasp
    • Circlet clasp

  10. The stability of the denture referred to
    • Resistance against vertical forces
    • Resistance for tissue ward settling of the denture
    • Resistance to removal in opposite direction
    • Resistance against horizontal forces

  11. The main purpose of beading an impression is
    • To prepare a base for the cast
    • To preserve the functional width and depth of the sulcus
    • To prevent the distortion of final impression
    • To mount the cast on the articulator

  12. The area between the mandibular buccal frenum and labial frenum is known as
    • Buccal vestibule
    • Aveolo lingual sulcus
    • Lingual vestibule
    • Labial vestibule

  13. The posterior extension of maxillary complete denture is
    • Tuberosity
    • Incisive papilla
    • Posterior nasal spine
    • Vibrating line

  14. The block out by which the undercut below the height of contour is removed in relation to the path of insertion is
    • Shaped block out
    • Arbitrary block out
    • Parallel block out
    • Formed block out

  15. For effective distribution of forces major and minor connector should be
    • Flexible
    • Rigid
    • Elastic
    • Visco elastic

  16. Preferred pontic design in mandibular posterior region is
    • Modified ridge lap
    • Ovate
    • Sanitary
    • Saddle

  17. Maximum inter cuspation is the same as
    • Centric relation
    • Centric occlusion
    • Long centric
    • Hinge axis position

  18. Minimum distance between the borders of the maxillary major connector and free gingival margin should be
    • 3 mm
    • 10 mm
    • 6 mm
    • 15 mm

  19. The flexible part of the circumferential clasp assembly is
    • Reciprocal arm
    • Shoulder
    • Body
    • Retentive terminal

  20. Complete dentures are constructed in
    • Balanced occlusion
    • Group function
    • Canine guided occlusion
    • Mutually protected occlusion

  21. Guiding planes are
    • Perpendicular to path of insertion
    • Parallel to path of insertion
    • Both Perpendicular to path of in and Parallel to path of insertion
    • None of these

  22. Super elasticity is exhibited by
    • Stainless steel
    • Nitinol
    • Chrome cobalt alloy
    • Titanium

  23. Type of corrosion caused by contact of two dissimilar metals used to fill opposing teeth is called
    • Crevice corrosion
    • Galvanic corrosion
    • Stress corrosion
    • Concentration cell corrosion

  24. Porosity occurring in the bulky portions of the heat cured acrylic complete denture is due to
    • Insufficient pressure application during packing
    • Time lag between packing and curing
    • Directly placing the packed resin in water at 100°C
    • Using fluid pour technique

  25. The occlusal clearance required for all metal crown is
    • 2 mm
    • 5 mm
    • 1-1.5 mm
    • 3 mm

  26. Combination clasp consists of
    • Wrought wire reciprocal arm and cast retentive arm
    • Wrought wire retentive arm and cast reciprocal arm
    • Wrought wire retentive arm and wrought wire reciprocal arm
    • Cast retentive arm and cast reciprocal arm

  27. RPI stands for
    • Occlusal rest, Proximal plate, I bar
    • Cingulum rest, proximal plate, I bar
    • Rest, Proximal guide plane, I bar
    • Rest, Proximal plate, Indirect retainer

  28. Of the three dimensions of color one which describes the dominant color of the object is
    • Metamerism
    • Value
    • Chroma
    • Hue

  29. All are true for porcelain teeth compared to acrylic teeth except
    • Low co-efficient of thermal expansion
    • Abrade the enamel quickly
    • Can be adjusted when the inter occlusal distance is very less
    • Held by the mechanical retention in the acrylic denture

  30. Suspend portion of the FPD that replaced the mission tooth is
    • Retainer
    • Connector
    • Abutment
    • Pontic

  31. Sprue with gauge number ______ is used for molars and premolars during casting.
    • 10 and 12
    • 6 and 8
    • 4 and 6
    • 5 and 7

  32. Die is
    • Impression of single Tooth
    • Impression of all Teeth
    • Replica of single Tooth
    • Replica of all Teeth

  33. Face bow is used for recording
    • Orientation relation
    • Centric relation
    • Vertical jaw relation
    • Horizontal jaw relation

  34. Terminal end of retentive arm of extra coronal retainer is placed on which area of the tooth?
    • Occlusal 3rd
    • Middle 3rd
    • Junction of middle and Gingival 3rd
    • Gingival 3rd

  35. Instrument kit used for making wax pattern for crown is
    • PKT instruments
    • Bergstrom instruments
    • Hanau instruments
    • Kennedy instruments

  36. IPS Empress is a type of
    • Castable ceramic
    • Pressable ceramic
    • CAD-CAM ceramic
    • Copy milled ceramic

  37. Cast duplicating material is
    • Alginate
    • Zinc Oxide eugenol
    • Impression compound
    • Agar Agar

  38. Investment material used for gold alloys
    • Gypsum bonded
    • Phosphate bonded
    • Silicate bonded
    • Divestment phosphate

  39. Dental stone is
    • α hemihydrates
    • β hemihydrates
    • α dehydrate
    • β dehydrate

  40. Firing temperature for low fusing dental porcelain
    • 1300°C-1400°C
    • 1101°C-1300°C
    • 850°C-1100°C
    • 700°C-850°C

  41. Jackson's triad consists of all except
    • Functional efficiency
    • Functional balance
    • Structural balance
    • Esthetic harmony

  42. Functional Regulator (FR) used for the treatment of anterior open bite is
    • FR2
    • FR3
    • FR4
    • FR5

  43. Canine retractor more commonly used in mandibular arch is
    • Buccal canine retractor
    • U loop canine retractor
    • Palatal canine retractor
    • Helical canine retractor

  44. Closure of midline diastema is an example of
    • Reciprocal anchorage
    • Stationary anchorage
    • Absolute anchorage
    • Reinforced anchorage

  45. The arrowhead clasp is called
    • Southend clasp
    • Schwarz clasp
    • Crozat clasp
    • Jackson's clasp

  46. In Adam's clasp, the angulation of bridge to the long axis of tooth is
    • 90 degrees
    • 75 degrees
    • 45 degrees
    • None of these

  47. Stainless steel consists of
    • 18% chromium and 8% Cobalt
    • 18% chromium and 8% Nickel
    • 18% Chromium and 8% Carbon
    • 18% Chromium and 8% iron

  48. An example of Baker's anchorage is
    • Intermaxillary anchorage using screws
    • Intramaxillary anchorage using elastics
    • Intramaxillary anchorage using screws
    • Intermaxillary anchorage using elastics

  49. Clip-on retainer is also known as
    • Kesling tooth positioner
    • Bonded lingual retainer
    • Spring aligner
    • Begg retainer

  50. Space maintainer indicated in early loss of primary second molar before the eruption of 1st molar is called
    • Nance palatal arch
    • Distal shoe space maintainer
    • Crown and loop space maintainer
    • Band and loop space maintainer

  51. A double oral screen is used to correct
    • Tongue thrusting
    • Thumb sucking
    • Lip biting
    • Bruxism

  52. Expansion screws includes all except
    • Hyrax type
    • Issacson type
    • Delaire type
    • Hass type

  53. In stainless steel, resistance to tarnish and corrosion is due to the passivating effect of
    • Carbon
    • Cobalt
    • Nickel
    • Chromium

  54. Catalan's appliance is also known as
    • Sved bite plane
    • Upper anterior bite plane
    • Lower inclined bite plane
    • Upper inclined bite plane

  55. The ratio of artistic portion to anatomic portion in a study model is
    • 1 : 1
    • 1 : 2
    • 2 : 1
    • None of these

  56. The force level reduces to zero between two successive patient visits. The type of force is
    • Continuous force
    • Interrupted force
    • Intermittent force
    • None of these

  57. In Andrew's six keys of occlusion, the key 3 is
    • Rotation
    • Crown angulation
    • Molar relationship
    • Crown inclination

  58. Active components of removable appliance includes all except
    • Clasps
    • Bows
    • Springs
    • Elastics

  59. Alterations in fluid dynamics in the periodontal ligament leads to tooth moment. This theory is called
    • Pressure tension theory
    • Blood flow theory
    • Bone bending piezoelectric theory
    • None of these

  60. Wunderer's modification of activator is mostly used in the treatment of
    • Class I malocclusion
    • Class II malocclusion
    • Class III malocclusion
    • Open bite

  61. Lower lingual springs in Frankel appliance are used to
    • To prevent supra-eruption of upper incisors
    • To prevent supra-eruption of lower incisors
    • To prevent supra-eruption of upper molars
    • To prevent supra-eruption of lower molars

  62. Box elastics are used in correcting
    • Open bite
    • Cross Bite
    • Deep bite
    • None of these

  63. Headgear deriving anchorage from the parietal region of the cranium is called
    • Cervical headgear
    • Occipital headgear
    • Combination headgear
    • Vertical pull headgear

  64. In twin block, angulation of inclined plane to the occlusal plane is
    • 70 degrees
    • 80 degrees
    • 90 degrees
    • 35 degrees

  65. Passive components of a fixed appliance include all except
    • Bands
    • Brackets
    • Arch wires
    • Lock pins

  66. Pellots of Frankel appliance are also called as
    • Lower lingual springs
    • Lingual crossover wire
    • Lower lingual pads
    • Lip pads

  67. Four basic bends in making wire components of orthodontic appliance includes all except
    • Obtuse bend
    • Right angle bend
    • Acute bend
    • Small radius bend

  68. Cross bite elastics are
    • Intramaxillary elastics
    • Intermaxillary elastics
    • Box elastics
    • None of these

  69. Upper lip pads are present in
    • FR III
    • FR II
    • FR IV
    • FR V

  70. Selfsupporting canine retractor is also known as
    • U loop canine retractor
    • Helical canine retractor
    • Buccal canine retractor
    • Palatal canine retractor

  71. Molar distalization can be achieved using
    • Bite planes
    • Oral screen
    • Lip bumper
    • Catalan's appliance

  72. In bonded Rapid Maxillary Expansion, cast cap splints are made of
    • Silver-copper alloy
    • Cobalt-chromium alloy
    • Polymethyl-methacrylate
    • Nickel-titanium alloy

  73. Slow expansion is termed as
    • Surgical expansion
    • Skeletal expansion
    • Dento-alveolar expansion
    • Dental expansion

  74. The anchorage potential of tooth does not depend on
    • Root form
    • Crown form
    • Ankylosed teeth
    • Inclination of tooth

  75. Force effecting a tooth movement in apical direction is called
    • Intrusion
    • Tipping
    • Translation
    • Extrusion

  76. Coffin spring is a
    • Guided spring
    • Self-supported spring
    • Compound spring
    • Helical spring

  77. Seperators are classified as all except
    • Brass wire seperators
    • Kesling's spring seperators
    • Ring seperators
    • None of these

  78. Thumb sucking can lead to
    • Proclination of lower incisors
    • Retroinclination of upper incisors
    • Posterior open bite
    • Retroinclination of lower incisors

  79. Split labial bow is used to correct
    • Midline diastema
    • Crowding
    • Anterior deep bite
    • Rotations

  80. Graphite is used as a
    • Filler
    • Solder
    • Flux
    • Antiflux

  81. The Luni river is flowing from which of the following region?
    • Punjab
    • Himachal Pradesh
    • Madya Pradesh
    • Rajasthan

  82. The first social reformer who introduced Panthi bhojan
    • Sree Narayana Guru
    • Thycaud Ayya
    • Vagbhatananda
    • Chattampi Swami

  83. The place where the first under pass in Kerala was established
    • Thiruvananthapuram
    • Ernakulam
    • Kozhikode
    • Kottayam

  84. Who was the current president of FIFA?
    • Joseph Blather
    • Gianni In Fantino
    • Prince Ali bin Hussein
    • Mary Kom

  85. The leader of Bardoli Satyagraha was
    • Sardar Vallabhai Patel
    • Mahatma Gandhi
    • Vithal Bhai Patel
    • Mahadev Desai

  86. Who called the rule of the British as Ven Neechan?
    • Brahmananda Swami Sivayogi
    • Ayyan kali
    • Poikayil Yohannan
    • Ayya Vai Kundar

  87. Who was the viceroy of India when the Quit India Movement started in 1943?
    • John Lawrence
    • Linlith gow
    • North Brook
    • Elgin

  88. India and which other country are celebrating 25 years of diplomatic ties in 2017
    • Syria
    • Saudi Arabia
    • Israel
    • Indonesia

  89. The best Malayalam film in national award 2016.
    • Pulimurukan
    • Pathemari
    • Drisyam
    • Oppam
    Question error

  90. Who is the leader of Kayal Sammelanam?
    • V. T. Bhattathirippad
    • Chattampi Swamikal
    • Pandit Karuppan
    • Poikayil Yohannan

  91. Who was the British general who esteemed Rani Lakshmi Bhai of Jhansi as the best and bravest military leader of the rebels?
    • Major general Havelock
    • Sir Colin Campbell
    • Sir Hugh Rose
    • Sir James Outram

  92. Who won the Ezhathachan Award 2016?
    • C. Radha Krishnan
    • Sree Kumaran Thampi
    • U. K. Kumaran
    • S. Joseph

  93. The split between the moderates and the extremists took place in December 1907 in the INC Session at
    • Bombay
    • Surat
    • Madras
    • Allahabad

  94. Who is known as the father of literacy in Kerala?
    • Kuriakose Elias Chavara
    • Dr. Palpu
    • Vagbadananda
    • Mannath Padmanabhan

  95. 'The India war of Independence 1857' was written by
    • Sir Syed Ahmad Khan
    • V. D. Savarkar Khan
    • S. R. Sharma
    • R. C. Majundar

  96. The original name of Sree Narayana Guru was
    • Kumaran
    • Nanu
    • Sankaran
    • Velu

  97. Gersoppa water fall, the highest in India is located in
    • Assam
    • Tamil Nadu
    • Karnataka
    • Himachal Pradesh

  98. In which year NITI Aayog is started in India?
    • 2012
    • 2014
    • 2013
    • 2015

  99. __________ is the first hydro electric project in Kerala.
    • Chenkulam
    • Pallivasal
    • Kuttiyadi
    • Kayam Kulam

  100. India's first Defence University is setup in
    • Haryana
    • Punjab
    • Uttar Pradesh
    • Delhi

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