Dental materials and Equipment 2DD 2025 test By Dr.ENG RACHSAK DDs
1. Reamer មានតួនាទី៖:
To cut and smooth dentinal wall of canal
To measure file , reamer and materials in millimeter
To enlarge inner walls of canal
To measure file , reamer and materials in millimeter , To enlarge inner walls of canal
To cut and smooth dentinal wall of canal and To enlarge inner walls of canal
2. គុណសម្បត្តិរបស់Dental Dam មាន៖:
អ្នកជំងឺហាមាត់បានតិច
កាត់បន្ថយការចំលងមេរោគ
ជួយការពារកុំឲ្យអ្នកជំងឺលេបរឺធ្លាក់សម្ភារៈចូលបំពងក
អ្នកជំងឺហាមាត់បានតិច, កាត់បន្ថយការចំលងមេរោគ
កាត់បន្ថយការចំលងមេរោគ, ជួយការពារកុំឲ្យអ្នកជំងឺលេបរឺធ្លាក់សម្ភារៈចូលបំពងក
3. តើមុខងាររបស់Dental Dam Forcepsគឺ៖:
To anchor and stabilize dental dam
To mark holes on dental dam
To isolate teeth for dental procedures
To place dental dam clamp on tooth and to remove clamp after procedure
4. មុខងាររបស់ Bone file:
To separate and lift root from socket
To separate tooth from alveolus
To remove or smooth rough edges of alveolar bone
5. Mouth Mirror មានតួនាទីអីខ្លះ:
To retract lips, cheeks and tongues
To examine teeth for decay
To grasp or transfer material into and out of the oral cavity
To plane and cleave enamel in cavity preparation
6. Enamel Hatchet គេប្រើវាសំរាប់ធ្វើ :
To plane and cleave enamel in cavity
To clean and smooth walls in cavity preparation
To clean and smooth floor and walls in cavity preparation
To remove enamel not supported by dentin
To clean and smooth walls in cavity preparation and To remove enamel not supported by dentin
7. ចូរជ្រើសរើសចំលើយខុសចំនួន០១សំរាប់មុខងារ spoon Excavator:
To remove carious dentin
To remove temporary crowns
To remove pulp tissue from canal
To remove temporary cement in temporary restorative
8. Long Needle មានប្រវែងប៉ុន្មាន:
1 inch long
1.5/8 inches long
2 inches long
3 inches long
9. Anesthetic Cartridge មានចំណុះប៉ុន្មាន:
1.5ml to 1.8ml of anesthetic solution
1.7ml to 1.8ml of anesthetic solution
2ml of anesthetic solution1
3ml of anesthetic solution
10. Basic Dental Instruments មានឧបករណ៏អ្វីខ្លះ:
Condenser
Mouth mirror
Explorer
Cotton Forceps
Mouth mirror, Explorer and Cotton Forceps
11. High – speed Hand piece ល្បឿនខ្យល់រត់ក្នុង១នាទីមានប៉ុនា្មនជុំ(rotation):
30,000
350,000
450,000
550,000
12. Disposable prophy cup ប្រើសំរាប់polishing លើធ្មេញ :
For polishing all surface of teeth
For polishing anterior teeth
For polishing occlusal surface
For deep grooves on lingual surface of anterior teeth
13. Liner Applicator មានតួនាទីសំរាប់:
To carry and dispense amalgam for cavity
To pack and condense amalgam into cavity
To place calcium hydroxide or glass ionomer in cavity
14. ចូរជ្រើសរើសចំលើយខុសចំនួន០១សំរាប់មុខងារ Burnishers:
To smooth amalgam after condensing
To contour matrix band before placement
To initial carving of amalgam
To carry and place temporary restorative material
15. ពេលបិតcomposite class 3 and class 4 តើគេយកឧបករណ៏អ្វីមកប្រើដើម្បើឲ្យរលោងនៅface interproximal surface :
Applicator
Composite Burnisher
Matrix Bands
Finishing Strip
16. ដើម្បីយកpulp tissue ពីcanal គេប្រើឧបករណ៏អ្វី:
File- k type
Broach
Reamer
File – Hedstrom
17. Reamer មានតួនាទី:
To cut and smooth dentinal wall of canal
To measure file , reamer and materials in millimeter
To enlarge inner walls of canal
To cut and smooth dentinal wall of canal and To enlarge inner walls of canal
18. តួនាទីរបស់Gate Glidden Bur or Drillជ្រើសរើសចម្លើយត្រូវ១:
To open canal orifice and enlarge wall of pulp chamber
To electronically measure length of canal to apex of tooth
To clean inside wall of canal
To enlarge inner walls of canal
19. តើគេយកសម្ភារៈអ្វីមកបិតបំពេញ pulp chamber after completion of canal preparation:
Lentulo Spiral
Paper Points
Endodontic Irrigating Syringe
Gutta- Percha
20. តើមុខងាររបស់ Edodontic Spreader គឺអ្វីជ្រើសរើសចម្លើយ១:
To help condense gutta percha lateral in canal
To help condense gutta percha vertical in canal
To carry and place material into tooth
21. Dental Dam Punch តើចម្លើយមួយណាសំរាប់ចោះ Dental dam ដាក់លើធ្មេញ molars:
No. 2
N o. 3
No. 4
No. 5
22. គុណសម្បត្តិរបស់Dental Dam មាន:
អ្នកជំងឺហាមាត់បានតិច
កាត់បន្ថយការចំលងមេរោគ
ជួយការពារកុំឲ្យអ្នកជំងឺលេបរឺធ្លាក់សម្ភារៈចូលបំពងក
កាត់បន្ថយការចំលងមេរោគ and ជួយការពារកុំឲ្យអ្នកជំងឺលេបរឺធ្លាក់សម្ភារៈចូលបំពងក
23. តើEndodontic Explorer មានតួនាទី:
To curette inside of tooth to base of pulp chamber
To smooth amalgam after condensing
To grasp and lock material for transfer into and out of oral cavity
To locate opening of small canal orifices or endodontics procedure
24. រកចម្លើយត្រូវមួយរបស់Endodontic File – K Type :
To clean inside wall of canal
To enlarge and smooth inner wall of canal
To cut and smooth dentinal walls of canal
To hold endodontic files and reamers
25. តើElastic Separators ដាក់លើធ្មេញលេខណា:
Molar
Premolars
Molars and premolars
Cuspid
26. តួនាទីរបស់របស់Orthodontic Hemostat:
To grasp tissue or bone fragments
To hold during surgical procedure
To tie in ligature to arch wire
To hold and place separators or tie ligatures to arch wire
27. តើមូយណាមុខងាររបស់ Tissue Forceps :
To cut tissue
To hold blade in place
To cut tissue with blade
To hold tissue during surgical procedures
28. តើមួយណាជាមុខងាររបស់ Furcation Probe :
To measure periodontal pocket depth in millimeter increments
To measure horizontal and vertical pocket depth of multi root teeth in furcation areas
To remove bon adjacent to teeth without causing trauma
29. រកចម្លើយត្រូវមួយ របស់ ឧបករណ៏ Luxating Elevator:
To cut periodontal ligaments before extraction
To separate and lift tooth from socket
To loose tooth from periodontal ligaments before extraction
30. រកចម្លើយខុសមួយ របស់ ឧបករណ៏Root elevators:
To loosen root
To use on posterior teeth
To lift and remove fragments of root
To separate and lift root from socket
31. មុខងាររបស់ Rongeurs:
To trim and remove excess alveolar bone after extraction of teeth
To remove or smooth rough edges of alveolar bone
To contour alveolar bone after single or multiple extractions
32. មុខងាររបស់ Diamond Bur- Wheel :
To reduce a tooth for crown preparation for subgingival margins
To reduce a tooth for crown preparation on lingual aspect of anterior teeth
To reduce bulk of incisal edges
To reduce a tooth for crown preparation for subgingival margins and To reduce a tooth for crown preparation on lingual aspect of anterior teeth
To reduce a tooth for crown preparation on lingual aspect of anterior teeth ,To reduce bulk of incisal edges
33. តើ Enamel Hatchet គេប្រើចលនាយ៉ាងម្តេច:
Pulling motion
Push motion
Cutting edge at an angle
34. What is function to form or accentuate line angles in cavity preparation :
Straight Chisel
Binangle Chisel
Enamel Hoe
Angle Former
35. តើHigh –Speed Handpiece មានប៉ុន្មានបែប:
៤
៥
៦
៣
36. មុខងារមួយណាប្រើសំរាប់Disposable prophy cup:
For polishing occlusal surfaces
For polishing deep grooves on lingual surfaces of anterior teeth
For polishing all surfaces of teeth
For polishing occlusal surfaces and For polishing deep grooves on lingual surfaces of anterior teeth
37. ចូលជ្រើសរើសមុខងាររបស់Surgical Electrical Hand piece Unit:
To use with bur for intraoral cavity preparation
To use with endodontics nickel –titanium rotary instruments
To use with depth drills for implants
To use for class I or class VI cavity preparation
38. តើចម្លើយ១របស់មុខងាររបស់Laser Handpiece Unit:
To remove lesion or tumor
To use for preparation of occlusal surface for sealants
To control bleeding
To remove lesion or tumor and To use for preparation of occlusal surface for sealants
To remove lesion or tumor and To control bleeding
39. តើមួយណាជាមុខងាររបស់Pear- Shaped Bur :
To open tooth for a restoration and to remove caries!
To remove caries
To establish retention in tooth for cavity preparation
To for inner walls of cavity preparation
40. តើមួយណាជាមុខងាររបស់Composite Disc:
To contour restoration material
To polish restorative material
To polish or smooth restorative material
To contour restoration material and To polish restorative material
To contour restoration material and To polish or smooth restorative material
41. ចូរជ្រើសរើសចម្លើយ១សំរាប់ To contour or cut models in the laboratory:
Laboratory Bur – Acrylic Bur
Rubber Points
Laboratory Bur-Diamond Disc
Magnetic Bur Block with Burs
42. តើពណ៍មួយណារបស់Rubber Points ដែលសឹកខ្លាំងជាងគេ:
Brown points
Green point
White point
43. ចូរជ្រើសរើសចម្លើយត្រូវមួយរបស់ឧបករណ៏ Composite Disc:
To Contour restorative material
To polish restorations , amalgam , composite and gold
To polish or smooth restorative material
To Contour restorative material and To polish or smooth restorative material
44. តើចម្លើយមួយណាជា Inverted Cone Bur :
To cut cavity preparation
To form inner walls of cavity preparation
To remove caries
To establish retention in tooth for cavity preparation
To remove caries and To establish retention in tooth for cavity preparation
45. តើចម្លើយមួយណាជា Tapered Fissure Bur – Crosscut:
To finish composite restoration
To place retention grooves in walls of cavity preparation
To form angles in walls of cavity preparation
To finish composite restoration and To form angles in walls of cavity preparation
To place retention grooves in walls of cavity preparation and To form angles in walls of cavity preparation
46. តើចម្លើយមួយណាជា Diamond Bur – Flame:
To reduce a tooth for crown preparation when parallel walls and flat floors are needed
To reduce a tooth for crown preparation for subgingival margins
To reduce a tooth for crown preparation on lingual aspect of anterior teeth and to reduce bulk of incisal edge
47. តើមុខងាររបស់ High- Volume (velocity) Evacuator ( HVE) Tip :
To evacuate large volumes of fluid and debris from the oral cavity
To evacuate smaller volumes of fluid from the oral cavity
To evacuate fluid from oral cavity and surgical site
To retract tongue during evacuation
48. រកចម្លើយខុសមួយរបស់ Electric Hand piece Unit and hand piece Attachments :
To use with bur for intraoral cavity preparation
To use with endodontic nickel – titanium rotary instruments
To use with depth drills for implants
To use with bur for trimming of provisional crowns
49. រកចម្លើយខុសមួយរបស់ Inverted Cone Bur:
To form inner walls of cavity preparation
To cut retention cavity preparation
To establish retention in tooth for cavity preparation
To finish composite restoration
50. ចូរជ្រើសរើសមុខងាររបស់ Laboratory Bur- Diamond Disc :
To contour or cut models in the laboratory
To be used on dental tray setups
To cut models or trim acrylic in laboratory
51. តើ Anterior Clamp ដាក់លើធ្មេញណាខ្លះ :
Used only on anterior teeth
Used is determined by tooth size
Used on right or left posterior molars
52. Function for Dental Dam Frame :
To anchor and stabilize dental dam
To anchor
To hold dental dam away from teeth
53. ចូរជ្រើសរើសចម្លើយខុស១របស់ Condenser :
To pack and condenser amalgam into cavity preparation
To pack and condenser temporary filling material
To carry and dispense amalgam for cavity preparation
To pack and condenser amalgam into interproximal areas of cavity preparation
54. មុខងាររបស់ Woodson:
To carry and place temporary restorative material for cavity preparation
To contour and carve occlusal and interproximal anatomy in amalgam restorations
To carve occlusal anatomy into amalgam rstorations
To carry and place temporary restorative material for cavity preparation and To contour and carve occlusal and interproximal anatomy in amalgam
55. ចូរជ្រើសរើសចម្លើយត្រូវ១របស់ Matrix Band Retainer:
To replace missing proximal wall or walls of cavity preparation for condensation of restorative material for class II preparation
To maintain stability of matrix band during condensation of restorative material for class II preparation
To hold matrix band in place along gingival margin of class II, class III or class preparation
56. ចូរជ្រើសរើសចម្លើយត្រូវ១របស់ Amalgam Well :
To hold amalgam before it is placed in preparation
To hold amalgam while loading amalgam carrier
To mix alloy and mercury into amalgam in a capsule
To hold amalgam before it is placed in preparation and To hold amalgam while loading amalgam carrier
To hold amalgam before it is placed in preparation and To mix alloy and mercury into amalgam in a capsule
57. ចូរជ្រើសរើសចម្លើយខុស១របស់Composite Placement Instruments:
To form occlusal anatomy in composite restorations
To carry composite material in cavity preparation
To apply conditioning, primer, and bonding material to cavity preparation
58. Function for Finishing Strip:
To hold material etchant, bonding, and composite
To harden light cured material bonding, and composite, sealants, build-up material
To finish and smooth interproximal surface of restoration
To hold material etchant, bonding, and composite and To harden light cured material bonding, and composite, sealants, build-up material
To hold material etchant, bonding, and composite and To finish and smooth interproximal surface of restoration
59. ចូរជ្រើសរើសចម្លើយត្រូវ១របស់Endodontic Long- Shank Spoon Excavator:
To remove carious dentin
To curet inside of tooth to base of pulp chamber
To remove temporary cement in temporary restoration
60. រកចម្លើយត្រូវ១របស់រូបរាងFile – K Type :
Twisted design- more twists per millimeter than reamer
Triangular cutting edge
Twisted triangular cutting edge
61. តើReamer ប្រើmotion អី :
Used with twisting motion
Used with push – pull motion
Used to cut and smooth dentinal walls of canal
62. Hand cutting instruments are composed of:
Handle and neck
Handle and blade only
Handle , shank and blade
Handle , neck and shank
Handle, neck, shank and blade.
63. Use of water spray during cutting procedures have following advantages:
Dehydration of oral tissues
Tooth restorative material and other debris are carried away.
Pulp is protected from heat
Clean view of cavity can be achieved
Bacterial contamination controlled.
64. Biologically active sealer which promote peri-apical healing contain:
2no Engenol
Cortico- steroids
Ca(OH)2
Silver-points
Zinc phosphate
65. Diamonds are superior to bur for cutting:
Cementum
Dentine
Enamel
Soft tissues
Carries
66. For the extirpation of entire pulp, necrotic debris, and foreign material, one should use:
Reamers
Files
Barbed Broaches
Bures
Plain broaches
67. Needle used for infiltration is:
30 gauge
25 gauge
27gauge
16 gauge
68. Most common complication after tooth extraction is:
Bleeding
Alveolar osteitis
Infection
Swelling
69. Local anesthetic solution with highest tissue irritancy is :
Procaine
Lignocaine
Bupivacaine
Mepivacaine
70. How can you identify bon the floor of the pulp Chamber in molar:
It is smooth
It is grey
It is dark brown
It is hard
71. Endodontic Plugger is used in:
To remove an obturation
To introduce a filling material in caries cavity
To condense gutta percha vertically in canal
To mix filling materials
72. Dental mouth Mirror can be:
Concave
Convex
Biconcave
Biconvex
73. Laboratory Spatula is used for :
Scaling
Removing of food debris and dentin
To mix powder and liquid in a flexible bowl
Mix material for impression
74. Necessary instruments for patient examination are :
Basic dental instruments
Dental spatula
Burs
Peso File
75. Function for used of Wheel Burs are:
To reduce a tooth for crown preparation for subgingival margins
Remove of cyst
Removal of temporary filling
To reduce a tooth for crown preparation on lingual aspect of anterior teeth
76. Matrix Band used for :
Finishing the obturation
To replace missing proximal wall
Creation the contact point
Introduction filling material in cavity
77. Which groups of instruments are used in endodontic:
Instruments for root canal filling
Instruments for finishing strip
Instruments for interproximal Condenser
Enamel cutting instruments
78. ចូរជ្រើសរើសពាក្យត្រូវ១ របស់ non resorbable suture material :
Suture Silk
Suture Polyglycolic( PGA)
Chromic gut
79. ចូរជ្រើសរើសចម្លើយត្រូវ:
Paper point
Gutta- Percha
Lentulo Spiral
80. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Endodontic Spreader
Endodontic Plugger
Glick Instrument
81. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Lentulo Spiral
Peso file
Reamer
82. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Endodontic File K
Broach
Endodontic File – Hedstrom
83. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Composite Placement Instrument
Composite Burnisher
Well for composite Material
84. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Applicator
Finishing Strip
Wooden Wedges
85. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Condenser ( plugger)
Interproximal Condenser
Burnishers
86. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Woodson
Hollenback Carvers
Discoid- Cleoid Carver
87. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Dental Dam Stamp
Dental Dam Frame
Dental Dam Template
88. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Premolar Clamp
Anterior Clamp
Universal Clamp
89. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Elastic Separating Pliers
Elastic Separators
Orthodontic Band
90. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Band Pusher
Plugger with Scaler
Band Seater Bite Stick
91. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Pear Shaped Bur
Straight Fissure Bur
Inverted Cone Bur
92. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Diamond Bur – flame
Diamond Bur – Wheel
Finishing Bur
93. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Periodontal Probe
Furcation Probe
Hoe
94. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Interdental File
Interdental Knife – spear Point
Back Action Hoe
95. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Root Elevators
Root – Tip Elevator
Luxating Elevator
96. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Rongeurs
Bone file
Surgical Chisel
97. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Mandibular Anterior Forceps
Maxillary Root Firceps
Maxillary Universal Forceps
98. ចូរអោយឈ្មោះសំភារៈខាងក្រោម:
Hemotat
Needle Holder
Suture Scissor
99. រូបភាពនេះជាអ្វី?:
Tooth pick
Wooden wedges
Interdental pick
100. រូបភាពនេះជាអ្វី?:
Cryers
Warrick James elevator
Couplands Chise
101. រូបភាពនេះជាអ្វី?:
Rubberdam punch
Rubberdam Clam
Rubberdam frane
102. រូបភាពនេះជាអ្វី?:
Paster filer
Endo hand file
Barbed broach
103. រូបភាពនេះជាអ្វី?:
Toflemire matrix retainer
Siqveland retainer
Interdental strip
104. រូបភាពនេះជាអ្វី?:
Floss strip
Polishing strip
Interdental strip
105. រូបភាពនេះជាអ្វី?:
Rubberdam Clamp
Scissors
Rubberdam tweezers
106. រូបភាពនេះជាអ្វី?:
Mouth prop
Rubber dam frame
X-ray holder
107. រូបភាពនេះជាអ្វី?:
Mouth prop
Rubber dam frame
X ray holder
108. រូបភាពនេះជាអ្វី?:
Ortho square
Ortho bracket
Ortho band
109. រូបភាពនេះជាអ្វី?:
Occlusal wax
Composition wax
Modelling wax
110. រូបភាពនេះជាអ្វី?:
Needle holders
Tissue dissecting forceps
Scissors
111. រូបភាពនេះជាអ្វី?:
Clear matrix strip
Matrix band
Polishing strips
112. រូបភាពនេះជាអ្វី?:
Gutta purcha point
Paper points
Wedge
113. រូបភាពនេះជាអ្វី?:
Floss
Retraction cord
Suture needle and silk
114. រូបភាពនេះជាអ្វី?:
Elevator
Luxator
Couplands Chisel
115. រូបភាពនេះជាអ្វី?:
Polishing brush
Polishing Cup
Polishing bur
116. រូបភាពនេះជាអ្វី?:
Mouth prop
Saliva ejector
Amalgam mixer
117. រូបភាពនេះជាអ្វី?:
Amalgam burnisher
Amalgam plugger
Ball Burnisher
118. រូបភាពនេះជាអ្វី?:
Mixing spatula
Wax knife
Flat plastic
119. រូបភាពនេះជាអ្វី?:
Wax
Articulating paper
Polishing strip
120. រូបភាពនេះជាអ្វី?:
Carver
Amalgam plugger
Flat plastic
121. រូបភាពនេះជាអ្វី?:
Endo file
Finger spreader
Rotary file
122. រូបភាពនេះជាអ្វី?:
Finger spreader
Gates glidden
Mandrel
123. រូបភាពនេះជាអ្វី?:
Wax knife
Carver
Spatula
124. រូបភាពនេះជាអ្វី?:
Push scaler
Jacquette scale
Prophy scaler
125. រូបភាពនេះជាអ្វី?:
Furcation probe
Periodontal Probe
Explorer
126. រូបភាពនេះជាអ្វី?:
Back Action Hoe
Cotton force
Periodontal Probe
127. រូបភាពនេះជាអ្វី?:
Endodontic Plugger
Endodontic Spreader
Lentulo Spiral
128. រូបភាពនេះជាអ្វី?:
Universal Curettes
Straight Sickle Scaler
Implant Scaler
129. រូបភាពនេះជាអ្វី?:
Straight Sickle Scaler
Ultrasonic Scaler Universal
Ultrasonic Scaler Furcation
130. រូបភាពនេះជាអ្វី?:
Tissue Scissors
Tissue Forceps
Hemostat
131. រូបភាពនេះជាអ្វី?:
Periosteal Elevator
Surgical Curette
Suture Scissors
132. រូបភាពនេះជាអ្វី?:
Tissue Forceps
Hemostat
Needle Holder
133. រូបភាពនេះជាអ្វី?:
Maxillary Root Forceps
Mandibular Anterior Forceps
Mandibular Root Forceps
134. រូបភាពនេះជាអ្វី:
Bone File
Surgical Chisel
Surgical Mallet
135. រូបភាពនេះជាអ្វី?:
Rongeur
Maxillary Root Forceps
Surgical Chisel
136. រូបភាពនេះជាអ្វី?:
Root Tip Elevators
Root tip Picks
Root Elevators
137. រូបភាពនេះជាអ្វី?:
Liner Applicator
Applicator
Tanner Carver
138. រូបភាពនេះជាអ្វី?:
Contouring Pliers
Crown and bridge Scissors
Trial Crown Remover
139. Diamonds superior for bur cutting ?:
Cementum
Dentine
Enamel
Caries
140. The final finishing of silicate/ glass ionomess restoration is done after?:
7 ½ minute
24 hours
30 minutes
1 hours
141. Instruments used for handing resins are made of :
Stainless streel
Carbon steel
Teflon coated metal
Gold
142. What are the functions of the Orthodontic Bracket?
To place bracket on tooth for bonding
To hold and carry bracket by placing tip of plies into slot of bracket
To hold Orthodontic arch wire in place
143. Which of the following is the appropriate file for removing gutta- percha from root canals?:
K file
H file
S file
144. ចូររកចំលើយត្រូវ១នៃ Crown and Bridge Scissors ?:
To trim aluminum temporary crowns on gingival side
To trim custom temporary crowns
To crimp and contour marginal edge of temporary crown
To trim aluminum temporary crowns on gingival side, to trim custom temporary crowns
145. ចូររកចំលើយខុស១នៃ Flexible Mixing Spatula?:
To mix dental materials
To remove permanent crown from tooth during try- in phase
To remove provisional crow
To remove permanent crown from tooth during try- in phase , to remove provisional crown
146. មុខងាររបស់ Trial Crown Remover ?:
To remove permanent crown from tooth during try- in phase
To remove provisional crown
To seat permanent crown while patient bites in centric occlusion
To remove permanent crown from tooth during try- in phase , to remove provisional crown
147. ចូររកចំលើយត្រូវ១នៃ Endodontic Long Shank Spoon Excavator ?:
To locate opening of small canal orifices for endodontic
To curet inside of tooth to base of pulp chamber
To carry and dispense irrigating solution into canal for cleansing during debridement of canal
148. ចូររកចំលើយត្រូវ១នៃ Characteristics របស់ Root canal File- Hedstrom?:
Triangular cutting edge
Twisted design
Twisted triangular cutting edge
149. ចូររកចំលើយខុស១នៃ Resorbable suture :
Chromic gut
Gut plain
polypylene
150. តើមួយណាជាមុខងាររបស់Tongue and Cheek Retractor :
To remove debris or granulation tissue
To hold tissue away from surgical site
To hold and retract tongue or cheek
151. ដើម្បីការពារកុំអោយងាប់pulp ពេលខៃធ្មេញយើងត្រូវការ៖?:
Water/air
High –Speed Handpiece
Slow- speed
152. តើមុខងាររបស់ Disposable prophy cup :
For polishing occlusal surfaces
For polishing all surfaces of teeth
Deep grooves on lingual surface of anterior teeth
153. រកចម្លើយខុសមួយនៃ Slow-speed Motor with contra Angle Handpiece :
To remove decay
To polish amalgam restoration
To polish teeth with prophy cup or brush
154. តើមួយណាជាមុខងាររបស់ Orthodontic Hemostat :
To hold and place separators
To place and remove arch wires
To remove bonded brackets
155. តើMandibular Universal Forceps –Cryer លេខប៉ុន្មាន?:
No. 151
No.150
No. 17
156. តើUniversal Maxillary Forceps លេខប៉ុន្មាន?:
No. 10S
No. 16
No.17
157. តើមុខងាររបស់ Root – Tip Elevators:
To lift and remove fragment of root
To use on posterior teeth
To lift and remove small root tips in difficult area
158. តើរកចម្លើយមួយត្រូវ របស់ Endodontic Plugger :
To help condense gutta- percha vertically in canal
To help condense gutta- percha lateral in canal
To carry and place material into tooth
159. រកចម្លើយខុស១របស់Peso File :
To prepare canal for endodontic post
To enlarge wall of pulp chamber
To open canal orifice
160. តើEndodontic file and reamers ពណ៏ខៀវលេខប៉ុន្មាន:
No. 20
No. 25
No. 30
161. តើមុខងាររបស់Endodontic File K Type?:
To clean inside walls of canal
To remove pulp tissue from canal
To enlarge and smooth inner walls of canal
162. Material must be cured in increments of ?:
2mm
3mm
4mm
163. តើមួយណាជាcharacteristic of Universal Clamp – Maxillary?:
Use on right or left posterior molars
Use is determined by tooth size
Use only on anterior teeth
164. មុខងារមួយណារបស់ Back – Action Hoe?:
To remove subgingival / supragingival calculus
To remove bone adjacent to teeth without causing trauma
To remove tissue
165. Calcium hydroxide is used for :
Pulp capping
Reduce maginal leakage
Reinforce the restoration
To prevent recurrent caries
166. What different High – Speed Handpiece of securing bur are available:
2
3
4
167. Long Needle larger gauge number is indicates:
Thinner needle
Big
Small
168. What the longer lasting anesthetic has a higher percentage of vasoconstrictor :
1/50000
1/100000
1/80000
169. Information printed on cartridge. Example of common anesthetic for routine dental procedures:
1/100 000
1/50 000
1/80 000
170. What is function of Saliva Ejector Tip:
To evacuate smaller volumes of fluid from the oral cavity
To evacuate large volumes of fluid and debris from the oral cavity
Use on mandibular arch
171. What is the function of Surgical Evacuation Tip:
To evacuate fluid from oral cavity and surgical sit
To evacuate large volumes of fluid and debris from the oral cavity
To retract tongue during evacuation
172. What is the function of Air/ Water Syringe with Removable Tip:
To rinse and dry specific teeth or entire oral cavity
To use with bur to cut tooth with decay or other dental anomalies
173. What is the function of the is Disposable Prophy Angle Attachments for slow – speed Handpiece :
To polish teeth with prophylaxis / prophy cup or brush
To use with burs for intraoral and exraoral procedures
To use with slow- speed attachments
174. រកចម្លើយខុស១នៃមុខងាររបស់ Electric Handpiece Unit and Handpiece Attachments:
To use with bur for intraoral cavity preparation
To use with endodontic nickel titanium rotary instruments
To use with depth drills for implants
175. What is the function of the Laser Handpiece Unit and Laser Handpiece Attachment:
To remove lesions or tumors
To use for class I or class IV cavity preparation
To use for preparation of occlusal surface for sealants
176. រកចម្លើយខុស១នៃ មុខងាររបស់Air Abasion Unit and Handpiece Attachment:
To use for class I or class IV cavity preparation
To use for preparation of occlusal surface for sealants
To control bleeding
177. What is the function of the Hollenback Carvers?
To contour and carver occlusal and interproximal anatomy in other restorative and temporary filling material
To trim interproximal amalgam restoration, recreating contour of proximal wall
To condense restorative material
178. រកចម្លើយខុស១របស់មុខងាររបស់Woodson :
To condense restorative material
To carve occlusal anatomy into amalgam restoration
To carry and place temporary restorative material for cavity preparation
179. តើMatrix Bands for Universal band ដាក់លើធ្មេញណា?
For all posterior teeth except larger teeth
For premolars
For larger molars
180. What is function of Matrix Bands:
To replace missing proximal wall or walls of cavity preparation for condensation of restorative material for class II
To maintain stability of matrix band during condensation of restorative material for class II
To hold matrix band in place a long gingival margin of class II , class III or class IV
181. រកចម្លើយត្រូវ១នៃមុខងាររបស់ Gutta - Percha :
To fill chamber after completion of canal preparation
To place endodontic sealer or cement in canal for final seal before placement of gutta –percha
To dry pulp chambers of canal
182. រកចម្លើយត្រូវ១នៃលក្ខណៈរូបរាងរបស់Peso File :
Parallel cutting edges
Flat tip
Plugger end
183. រកចម្លើយខុស១នៃមុខងាររបស់Glick Instrument :
To condense gutta- percha into endodontically prepared teeth using pluger end
To serve excess gutta- percha after plugger end is heated
To use for final filling of canal
184. រកចម្លើយខុស១នៃមុខងាររបស់Universal Curettes :
To scale and remove deposits and stains from teeth
To use for root planning , periodontal debridement , and soft tissue
To scale supragingival and subgingival surface
185. រកចម្លើយខុស១នៃលក្ខណៈរូបរាងរបស់ Universal Curettes:
Black –two cutting edges , round toe , rounded back At 90- degree angle to lower shank
Black –two cutting edges, With face at 90 -degree angle to lower shank
Rounded back and toe ; At 70 -degree angle to lower shank
186. What is function of the Extended Area – Specific Curette – Anterior
To scale an rmove deposits from subgingival surface of posterior teeth
To scale and remove deposits in deep periodontal pockets 5mm or deeper
To use for root planning
187. រកចម្លើយត្រូវ១នៃលក្ខណៈរូបរាងរបស់ Straight Sickle Scaler:
Two cutting edges on straight blade that ends in sharp point
Two cutting edges on curved blade that ends in sharp point
Two cutting edges
188. What is function of the Ultrasonic Scaling Unit ( Power Scaler)
To use with water – cooled ultrasonic tips vibrating at high frequency
To remove supragingival calculus on teeth
To remove bacterial plaque from periodontal pockets
189. រកចម្លើយខុស១នៃមុខងាររបស់ Ultrasonic Scaler Instrument Tip – Supragingival:
To remove supragingival calculus on teeth
To remove bacterial plaque from periodontal pockets
To use for root planning
190. What is function of the Scaler Instrument Tip – Universal :
To remove bacterial plaque and general deposits
To remove bacterial plaque from furcation areas
To remove bacterial plaque from periodontal pockets
191. តើមួយណាជាមុខងាររបស់Elastic Separating Pliers:
To grip place separators around contact area of tooth
To separate teeth to banding a tooth for orthodontic braces
To place around contact area of tooth
192. រកចម្លើយខុស១នៃលក្ខណៈរូបរាងរបស់Band Pusher or Plugger with Scaler :
Band Push or Plugger
Scaler
Single or double ended
193. រកចម្លើយត្រូវ១នៃមុខងាររបស់Band Seater- Bite Stick:
To remove excess material after cementation or bonding of bands
To Assist seating or placing of orthodontic bands for try in or cementing phase
To separate teeth to banding a tooth for orthodontic braces
194. រកចម្លើយត្រូវ១នៃលក្ខណៈរូបរាងរបស់Bracket Placement Card:
Tape on card holds bracket in place before they are bonded to teeth
Used with pulling motion
Use with push motion
195. តើ Enamel Hatchet ប្រើ motion មួយណា?
Use with push motion
Used with pulling motion
Use with pulling and push motion
196. តើStraight Chisel ប្រើ motion មួយណា?
Use with push motion
Used with pulling motion
Use with pulling and push motion
197. រកចម្លើយត្រូវ១នៃលក្ខណៈរូបរាងរបស់Endodontic Long Shank Spoon Excavator :
Long shank to reach deep into cavity preparation
Working end – longer than regular explorer to reach opening of canal
Pointed tips; sharp, thin, and flexible
198. រកចម្លើយខុស១នៃលក្ខណៈរូបរាងរបស់Cotton Forceps:
Pointed tips; sharp, thin, and flexible
Plain or serrated tips
Pointed or rounded
199. រកចម្លើយខុស១នៃមុខងាររបស់Flexible Alginate Spatula:
To mix powder and liquid in flexible bowl
To mix laboratory paster, stone , and die stone for models
To place around contact area of tooth
200. តើUniversal Mandibular Forceps for extraction mandibular first and second molars :
No. 17
No.16
No. 10s
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