Dental MCQs

This extensive collection of Dental MCQs is designed to support your preparation for exams, interviews, and assessments in the field of dentistry. Covering essential topics such as oral anatomy, dental pathology, orthodontics, periodontics, and dental materials, these questions will enhance your understanding of key dental concepts and help you excel in both academic and professional evaluations.

1. What is the hardest substance in the human body?

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

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2. How many permanent teeth does an adult human typically have?

A) 20
B) 28
C) 32
D) 36

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3. Which tooth is also referred to as the “wisdom tooth”?

A) First molar
B) Canine
C) Third molar
D) Incisor

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4. What is the term for the inflammation of the gums?

A) Caries
B) Gingivitis
C) Pulpitis
D) Periodontitis

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5. Which mineral is essential for tooth enamel formation?

A) Magnesium
B) Potassium
C) Calcium
D) Iron

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6. What type of tissue covers the root of a tooth?

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

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7. Which is the primary cause of tooth decay?

A) Bacteria
B) Virus
C) Fungus
D) Parasite

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8. What is the primary function of incisors?

A) Grinding
B) Cutting
C) Crushing
D) Tearing

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9. What is dental plaque primarily composed of?

A) Proteins
B) Bacteria
C) Saliva
D) Food particles

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10. Which instrument is commonly used to remove dental plaque?

A) Excavator
B) Scaler
C) Probe
D) Forceps

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11. What is the common name for dental caries?

A) Tartar
B) Cavity
C) Gingivitis
D) Bruxism

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12. What is the primary cause of periodontal disease?

A) Acid erosion
B) Bacterial infection
C) Mechanical trauma
D) Malnutrition

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13. Which dental condition is associated with the grinding of teeth?

A) Malocclusion
B) Bruxism
C) Fluorosis
D) Pulpitis

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14. What does the dental term “occlusion” refer to?

A) Tooth extraction
B) Alignment of teeth
C) Gum inflammation
D) Plaque removal

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15. What is the primary function of molars?

A) Cutting
B) Tearing
C) Grinding
D) Holding

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16. Which part of the tooth contains nerves and blood vessels?

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

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17. What is the term for the removal of a tooth?

A) Extraction
B) Root canal
C) Implant
D) Filling

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18. Which vitamin is important for healthy gums?

A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K

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19. What dental material is used to fill cavities?

A) Composite resin
B) Titanium
C) Ceramic
D) Bone graft

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20. Which dental condition involves the exposure of the tooth’s inner pulp?

A) Gingivitis
B) Pulpitis
C) Bruxism
D) Caries

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21. What is the main cause of tooth sensitivity?

A) Enamel erosion
B) Pulp infection
C) Dental fluorosis
D) Root exposure

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22. Which bacteria are commonly involved in tooth decay?

A) Staphylococcus
B) Streptococcus mutans
C) Escherichia coli
D) Lactobacillus

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23. What is the role of fluoride in dental care?

A) Strengthen enamel
B) Remove plaque
C) Whiten teeth
D) Numb gums

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24. What is a root canal treatment primarily used for?

A) Tooth whitening
B) Tooth extraction
C) Treating infected pulp
D) Treating gum disease

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25. Which tooth is often called the “eye tooth”?

A) First molar
B) Second premolar
C) Canine
D) Lateral incisor

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26. What dental device is used to straighten teeth?

A) Retainer
B) Crown
C) Bridge
D) Braces

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27. What is the process of removing tartar from teeth called?

A) Scaling
B) Root planing
C) Fluoride treatment
D) Filling

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28. Which dental specialist focuses on the alignment of teeth?

A) Endodontist
B) Orthodontist
C) Periodontist
D) Prosthodontist

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29. What is the main function of dental floss?

A) Polish teeth
B) Clean between teeth
C) Strengthen enamel
D) Remove tartar

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30. What is the scientific name for the gums?

A) Dentin
B) Gingiva
C) Pulp
D) Cementum

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31. Which condition involves inflammation of the tissue surrounding the teeth?

A) Gingivitis
B) Periodontitis
C) Caries
D) Malocclusion

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32. What is the first set of teeth in humans called?

A) Permanent teeth
B) Molars
C) Deciduous teeth
D) Wisdom teeth

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33. What is a crown used for in dentistry?

A) To replace missing teeth
B) To cover a damaged tooth
C) To extract a tooth
D) To whiten teeth

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34. What is an abscess in dentistry?

A) A tooth filling
B) A plaque deposit
C) A collection of pus
D) A type of gum disease

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35. Which dental tool is used to examine the mouth?

A) Mirror
B) Forceps
C) Scaler
D) Drill

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36. What is the purpose of dental sealants?

A) To protect enamel from decay
B) To remove plaque
C) To polish teeth
D) To strengthen gums

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37. What is xerostomia?

A) Tooth sensitivity
B) Dry mouth
C) Gum inflammation
D) Jaw pain

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38. Which dental material is used for impressions?

A) Gold
B) Amalgam
C) Alginate
D) Porcelain

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39. What is the most common cause of oral cancer?

A) Vitamin deficiency
B) Tobacco use
C) Poor oral hygiene
D) Genetic factors

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40. Which condition is characterized by excessive fluoride exposure?

A) Gingivitis
B) Bruxism
C) Fluorosis
D) Plaque

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41. What is the role of a prosthodontist?

A) Treating gum diseases
B) Root canal therapy
C) Replacing missing teeth
D) Teeth whitening

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42. What is the ideal pH of saliva for healthy teeth?

A) 4.0
B) 5.5
C) 6.5
D) 7.0

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43. What is dental calculus also known as?

A) Plaque
B) Tartar
C) Cavity
D) Gingivitis

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44. What is a dental bridge used for?

A) Whiten teeth
B) Align teeth
C) Replace missing teeth
D) Fill cavities

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45. Which part of the tooth is visible above the gum line?

A) Root
B) Crown
C) Pulp
D) Enamel

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46. What is the primary cause of halitosis?

A) Plaque
B) Bad breath
C) Tooth decay
D) Gum disease

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47. What is the term for the soft tissue inside a tooth?

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

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48. What is the dental term for a tooth that has not erupted properly?

A) Impacted tooth
B) Deciduous tooth
C) Carious tooth
D) Hyperdontia

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49. Which tool is commonly used to drill teeth during treatment?

A) Forceps
B) Excavator
C) Dental bur
D) Ultrasonic scaler

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50. What is the common name for orthodontic appliances?

A) Dentures
B) Implants
C) Braces
D) Crowns

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51. What condition results from the improper alignment of teeth?

A) Malocclusion
B) Gingivitis
C) Pulpitis
D) Tartar

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52. What is a dental veneer used for?

A) Strengthening the gum
B) Filling a cavity
C) Covering the front surface of a tooth
D) Treating a root canal

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53. Which tool is used to harden dental materials such as fillings?

A) Ultrasonic scaler
B) Dental mirror
C) Curing light
D) Dental drill

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54. What does TMJ stand for in dental terminology?

A) Temporary Molar Joint
B) Temporomandibular Joint
C) Tooth Mandible Junction
D) Tertiary Molar Jaw

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55. What is a “bitewing” in dentistry?

A) A dental x-ray
B) A tool for extracting teeth
C) A type of filling
D) A dental impression material

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56. What is the primary cause of tooth discoloration?

A) Fluorosis
B) Enamel erosion
C) Plaque build-up
D) Food and drink stains

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57. Which condition is characterized by cracked or fractured teeth due to excessive force?

A) Enamel hypoplasia
B) Bruxism
C) Caries
D) Erosion

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58. What is a “denture”?

A) A tool for cleaning teeth
B) A dental restoration that replaces missing teeth
C) A dental x-ray technique
D) A type of filling material

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59. What is an implant in dental terms?

A) A material used to fill cavities
B) A surgical component placed in the jaw to hold a replacement tooth
C) A tool used for tooth extraction
D) A tooth whitening agent

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60. What is the main function of saliva in oral health?

A) Whitens teeth
B) Prevents tooth decay
C) Lubricates the teeth and gums
D) Reduces bacteria growth

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61. Which dental specialist deals with the pulp and root canal treatment?

A) Periodontist
B) Orthodontist
C) Endodontist
D) Prosthodontist

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62. What dental term refers to the space between two teeth?

A) Cavity
B) Diastema
C) Enamel space
D) Fissure

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63. What is the purpose of a dental night guard?

A) To straighten teeth
B) To protect teeth from grinding during sleep
C) To whiten teeth
D) To reduce plaque

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64. What is the dental term for the removal of the dental pulp?

A) Scaling
B) Root canal therapy
C) Extraction
D) Crown placement

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65. Which dental condition results from an untreated cavity reaching the pulp?

A) Periodontal disease
B) Pulpitis
C) Gingivitis
D) Fluorosis

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66. What does an “overbite” refer to?

A) Teeth grinding
B) Upper teeth extending over the lower teeth
C) Misalignment of the jaw
D) Extra teeth growing in the mouth

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67. What is a “composite” in dental procedures?

A) A type of x-ray
B) A resin material used to fill cavities
C) A device used to straighten teeth
D) A technique to clean teeth

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68. What is fluoride varnish used for in dental care?

A) To protect teeth from decay
B) To clean plaque
C) To remove tartar
D) To whiten teeth

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69. What dental condition is caused by a deficiency in vitamin C?

A) Scurvy
B) Fluorosis
C) Gingivitis
D) Periodontitis

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70. Which condition involves the loss of supporting bone around the teeth?

A) Pulpitis
B) Periodontal disease
C) Gingivitis
D) Malocclusion

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71. Which type of dental x-ray shows the entire tooth and surrounding bone?

A) Bitewing
B) Panoramic
C) Periapical
D) Occlusal

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72. What is the term for the surgical removal of the tip of the tooth’s root?

A) Root canal
B) Apicoectomy
C) Extraction
D) Crown

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73. What is the dental term for the surface of the tooth closest to the midline?

A) Distal
B) Mesial
C) Lingual
D) Buccal

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74. What is the purpose of a dental prophylaxis?

A) Tooth extraction
B) Tooth polishing and cleaning
C) Cavity filling
D) Root canal therapy

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75. What is an amalgam filling made of?

A) Gold
B) Silver, mercury, and other metals
C) Composite resin
D) Porcelain

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76. What is the most common material used for dental crowns?

A) Gold
B) Porcelain
C) Composite resin
D) Stainless steel

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77. Which condition refers to the excessive buildup of tartar below the gum line?

A) Periodontitis
B) Gingivitis
C) Pulpitis
D) Malocclusion

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78. Which dental procedure involves reshaping the surface of a tooth?

A) Crown placement
B) Root canal therapy
C) Enameloplasty
D) Scaling

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79. What is the most effective way to prevent tooth decay?

A) Use of fluoride toothpaste
B) Regular brushing and flossing
C) Limiting sugar intake
D) All of the above

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80. What is the most common cause of bad breath?

A) Poor oral hygiene
B) Enamel erosion
C) Tooth grinding
D) Fluorosis

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81. Which dental condition involves the inflammation and infection of the soft tissues surrounding the tooth root?

A) Pulpitis
B) Gingivitis
C) Abscess
D) Caries

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82. Which type of filling material is most suitable for front teeth due to its natural appearance?

A) Gold
B) Amalgam
C) Composite resin
D) Stainless steel

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83. Which dental instrument is used for detecting cavities and assessing tooth structure?

A) Scaler
B) Explorer
C) Excavator
D) Mirror

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84. What is a common symptom of temporomandibular joint (TMJ) disorder?

A) Tooth pain
B) Jaw clicking or popping
C) Enamel erosion
D) Teeth grinding

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85. What dental condition is caused by acid-producing bacteria?

A) Tooth decay
B) TMJ disorder
C) Gingivitis
D) Bruxism

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86. What is the most common age range for the eruption of wisdom teeth?

A) 12-15 years
B) 17-25 years
C) 30-35 years
D) 40-45 years

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87. What is the purpose of a dental dam in root canal therapy?

A) To isolate the tooth being treated
B) To clean the tooth
C) To protect enamel
D) To fill the cavity

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88. Which dental device helps protect teeth during sports activities?

A) Night guard
B) Mouth guard
C) Retainer
D) Crown

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89. Which vitamin deficiency can cause bleeding gums?

A) Vitamin D
B) Vitamin C
C) Vitamin A
D) Vitamin K

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90. What dental tool is used to smooth the surface of fillings?

A) Probe
B) Excavator
C) Burnisher
D) Mirror

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91. What is the most common cause of a toothache?

A) Fluorosis
B) Tooth decay
C) Tooth eruption
D) Orthodontic treatment

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92. Which term describes the reattachment of the gum to the tooth surface after a scaling procedure?

A) Crown lengthening
B) Periodontal reattachment
C) Gingival grafting
D) Occlusal adjustment

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93. What is the name of the mineralized plaque that forms on teeth?

A) Tartar
B) Enamel
C) Fluoride
D) Dentin

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94. What is the term for teeth that are not properly aligned when the jaws are closed?

A) Malocclusion
B) Occlusal adjustment
C) Overbite
D) Underbite

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95. What is the purpose of using a rubber cup during dental cleaning?

A) To fill cavities
B) To polish teeth
C) To remove plaque
D) To whiten teeth

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96. Which dental specialty focuses on replacing missing teeth?

A) Endodontics
B) Orthodontics
C) Prosthodontics
D) Periodontics

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97. What is a fissure sealant used for in dentistry?

A) To fill cavities
B) To cover the chewing surfaces of back teeth to prevent decay
C) To remove tartar
D) To whiten teeth

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98. Which condition results from prolonged exposure to excessive fluoride?

A) Fluorosis
B) Gingivitis
C) Erosion
D) Periodontitis

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99. Which dental procedure involves the reshaping of the gums?

A) Root canal
B) Crown placement
C) Gingivectomy
D) Filling

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100. What is the main role of a dental hygienist?

A) Filling cavities
B) Performing oral surgeries
C) Cleaning teeth and educating patients on oral health
D) Removing teeth

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