Bruxism - Quiz
Bruxism
  • 1. What was the historical belief regarding the primary cause of bruxism?
A) Problems with the bite
B) Dietary deficiencies
C) Genetic predisposition
D) Neurological disorders
  • 2. According to modern sources, what is the relationship between bruxism and occlusal factors?
A) An inverse relationship
B) A proven genetic link
C) A strong causative relationship
D) No relationship or a minimal relationship
  • 3. Can people without teeth experience bruxism?
A) Only children can
B) Only if they have implants
C) Yes, even those wearing dentures
D) No, it requires natural teeth
  • 4. What did studies suggest regarding the relationship between occlusal factors and bruxism in children?
A) There is a stronger relationship than in adults
B) There is no evidence to support this
C) There may be more of a relationship
D) There is definitely no relationship
  • 5. Which psychosocial factor is most commonly cited as a risk for bruxism?
A) Physical inactivity
B) Stressful lifestyle
C) Lack of sleep
D) High caffeine intake
  • 6. Stress has a stronger relationship with which type of bruxism?
A) Awake bruxism
B) Sleep bruxism
C) Nocturnal clenching
D) Childhood-onset bruxism
  • 7. What personality traits are commonly associated with bruxism?
A) Aggressive, competitive, or hyperactive
B) Extroverted and social
C) Easy-going and relaxed
D) Passive and withdrawn
  • 8. What did the study by Rosales et al. on rats suggest about bruxism?
A) Sleep deprivation causes bruxism
B) Emotional stress can cause bruxism-like behavior
C) Dietary changes cause bruxism
D) Physical injury causes bruxism
  • 9. What percentage of people with sleep bruxism have a direct family member who had it in childhood?
A) 5–10%
B) 100%
C) 75–90%
D) 21–50%
  • 10. Have specific genetic markers for bruxism been identified?
A) Yes, one specific marker
B) Yes, several have been found
C) No, none have been identified
D) Yes, in awake bruxism only
  • 11. When does awake bruxism often occur?
A) Immediately upon waking
B) During deep sleep
C) During periods of concentration
D) Only during physical exercise
  • 12. What is the common historical explanation for why people grind their teeth regarding their bite?
A) Jaw strengthening
B) Teeth alignment
C) Self-equilibration
D) Stress relief
  • 13. What is noted about children with sleep bruxism regarding anxiety?
A) Anxiety is unrelated to sleep bruxism
B) They show lower levels of anxiety
C) They show greater levels of anxiety
D) They show no difference from other children
  • 14. Which of the following is considered a stressful life event that may intensify bruxism?
A) Eating dinner
B) Family bereavement
C) Taking a nap
D) Watching television
  • 15. What does the text suggest about removing occlusal interferences for sleep bruxism?
A) It works for adults but not children
B) There is no evidence it has an impact
C) It is the primary cure
D) It significantly reduces grinding
  • 16. How is awake bruxism usually classified in terms of control?
A) Semivoluntary
B) Fully conscious
C) Reflexive
D) Completely involuntary
  • 17. In children, what might be a potential cause of bruxism?
A) Excessive reading
B) Teething
C) Early tooth loss
D) Lack of exercise
  • 18. What is the primary action typically involved in awake bruxism?
A) Lip biting
B) Excessive drooling
C) Jaw snapping
D) Clenching
  • 19. Which of the following is considered a semivoluntary oral habit associated with awake bruxism?
A) Nail biting
B) Sneezing
C) Laughing
D) Snoring
  • 20. What is the primary physiological mechanism suggested for sleep bruxism?
A) Peripheral muscle fatigue
B) Respiratory blockages
C) Central nervous system mechanisms
D) Digestive disorders
  • 21. What does the abbreviation RMMA stand for in the context of sleep bruxism?
A) Rhythmic masticatory muscle activity
B) Rhythmic mandibular movement arousal
C) Resting muscle maintenance activity
D) Rapid mandibular muscle adjustment
  • 22. What percentage of sleep bruxism episodes occur during sleep arousal?
A) 25%
B) 100%
C) 86%
D) 50%
  • 23. What accompanies sleep arousals besides bruxism?
A) Loss of vision
B) Increased heart rate
C) Decreased heart rate
D) Hypothermia
  • 24. What physical position is mentioned as being linked to sleep bruxism episodes?
A) Supine
B) Prone
C) Side sleeping
D) Fetal position
  • 25. What system disturbance is suggested to be involved in the etiology of bruxism?
A) Respiratory system
B) Dopaminergic system
C) Digestive system
D) Endocrine system
  • 26. Why are smokers thought to have a higher incidence of bruxism?
A) Nicotine stimulates dopamine release.
B) Smoking relaxes jaw muscles.
C) Nicotine causes tooth decay.
D) Smoking increases oxygen intake.
  • 27. Which medication is mentioned as having a modifying effect on bruxing activity?
A) Penicillin
B) Levodopa
C) Aspirin
D) Insulin
  • 28. Which of the following is a symptom associated with the episodes of sleep bruxism?
A) Stable pH levels
B) Increased salivary flow
C) Constant sleep depth
D) Gastroesophageal reflux
  • 29. When are the symptoms of sleep bruxism typically most intense?
A) In the middle of the afternoon
B) During a nap
C) Immediately after waking
D) Before going to sleep
  • 30. What is the clinical term for restricted mouth opening associated with bruxism?
A) Trismus
B) Linea alba
C) Glossodynia
D) Morsicatio buccarum
  • 31. Where is pain often located when associated with the temporalis muscle in bruxism?
A) The temples
B) The chin
C) The forehead
D) The bridge of the nose
  • 32. What does 'otalgia' refer to in the context of bruxism?
A) Pain referred to the ear
B) Ringing in the ears
C) Infection of the ear canal
D) Hearing loss
  • 33. What is the primary way bruxism is usually detected?
A) By blood tests
B) By X-rays of the brain
C) By a partner waking up the patient
D) By observing effects like tooth wear and pain
  • 34. Which body system components are affected by the forces generated during bruxism?
A) Only the jaw muscles
B) Only the teeth and gums
C) Teeth, periodontium, and temporomandibular joints
D) The teeth and the tongue
  • 35. What is the global prevalence of bruxism according to the text?
A) 50%
B) 8%
C) 5%
D) Approximately 22%
  • 36. Which of these is a common symptom of bruxism?
A) Difficulty swallowing
B) Aching jaw muscles
C) Increased appetite
D) Bleeding gums
  • 37. Which demographic is more commonly affected by awake bruxism?
A) The elderly
B) Men
C) Women
D) Children
  • 38. What is the reported prevalence of bruxism in people over the age of 60?
A) 14%
B) 22%
C) Approximately 3%
D) 8%
  • 39. Which region has the highest prevalence of sleep bruxism?
A) South America
B) Europe
C) Asia
D) North America
  • 40. Which region has the highest prevalence of awake bruxism?
A) Europe
B) South America
C) Asia
D) North America
  • 41. What percentage of the general population does the ICSD-R estimate will grind their teeth at some point in life?
A) 5%
B) 85–90%
C) 43%
D) 22%
  • 42. According to the 2024 meta-analysis, what is the prevalence of awake bruxism?
A) 3%
B) 21%
C) 23%
D) 43%
  • 43. Which muscle is associated with pain in the temple?
A) Temporalis
B) Buccinator
C) Trapezius
D) Masseter
  • 44. What can happen to the jaw joint due to bruxism?
A) Discoloration
B) Clicking
C) Total ossification
D) Permanent detachment
  • 45. What is the association between TMD pain and self-reported bruxism?
A) Positive association
B) No association
C) Negative association
D) Inverse relationship
  • 46. What can severe, chronic bruxism lead to in the temporomandibular joints?
A) Complete joint fusion
B) Improved mobility
C) Increased bone density
D) Arthritis
  • 47. What is the term for tooth wear caused by tooth-to-tooth contact?
A) Fremitus
B) Attrition
C) Abfraction
D) Erosion
  • 48. Which surface of the tooth is primarily affected by attrition?
A) Cervical region
B) Root surface
C) Facial surface
D) Occlusal surface
  • 49. What is the term for tooth movement occurring during occlusal loading?
A) Attrition
B) Fremitus
C) Resorption
D) Abfraction
  • 50. According to the text, what is the most common cause of tooth mobility?
A) Medial pterygoid spasms
B) Periodontal disease
C) Fremitus
D) Bruxism
  • 51. What is the primary treatment for periodontal disease even when occlusal forces are high?
A) Total extraction of teeth
B) Elaborate occlusal adjustments
C) Mandible repositioning surgery
D) Plaque control
  • 52. What shape are abfraction cavities typically described as?
A) Circular
B) Irregular pits
C) V-shaped
D) Rectangular
  • 53. Besides attrition and abfraction, what other factor is said to contribute to tooth wear in some bruxists?
A) Plaque buildup
B) Erosion
C) Fremitus
D) Gumline recession
  • 54. How long are teeth typically in contact during a normal day?
A) More than 60 minutes
B) Less than 20 minutes
C) They are in contact all day
D) Exactly 2 hours
  • 55. Which condition is suspected as a possible cause of bruxism?
A) Excessive saliva production
B) Hyperactivity of the tongue
C) Chronic nasal congestion
D) Ankyloglossia
  • 56. Which muscles are primarily involved in sideways grinding?
A) Masseter muscle
B) Lateral pterygoids
C) Temporalis muscle
D) Medial pterygoid muscle
  • 57. What is the typical state of the jaw during sleep in individuals without bruxism?
A) Usually clenched
B) Always vibrating
C) Usually open
D) Rhythmically moving
  • 58. Which substance is mentioned as being able to exacerbate bruxism when consumed in excess?
A) Vitamin C
B) Caffeine
C) Calcium
D) Fluoride
  • 59. Which drug is noted for causing bruxism that occurs immediately after use and for several days afterward?
A) MDMA
B) Lithium
C) Fluoxetine
D) Caffeine
  • 60. What term describes a part of the bite meeting sooner than other parts?
A) Occlusal harmony
B) Ideal occlusion
C) Premature contact
D) Deflective stabilization
  • 61. What is the difference between a premature contact and a deflective interference?
A) They are the exact same thing
B) Deflective interference refers only to front teeth
C) Deflective interference implies a dynamic abnormality
D) Premature contact only happens with wisdom teeth
  • 62. Which of the following is commonly associated with an over-erupted upper wisdom tooth?
A) An ideal occlusion
B) A deflective interference
C) A symptom of Parkinson's disease
D) A deficiency in caffeine
  • 63. Which medication is mentioned as a treatment for ADHD that is linked to bruxism?
A) Lithium
B) Fluoxetine
C) Citalopram
D) Methylphenidate
  • 64. Which of these substances is NOT listed as a potential contributor to bruxism?
A) Fluvoxamine
B) Penicillin
C) Cocaine
D) Venlafaxine
  • 65. What is a device used to confirm clenching in bruxism patients?
A) Bruxchecker
B) Oximeter
C) Stethoscope
D) Thermometer
  • 66. Which disorder must be excluded when diagnosing sleep bruxism due to similar rhythmic jaw movements?
A) Seizure disorders
B) Allergies
C) Common cold
D) Diabetes
  • 67. Which of the following is an example of an electromyographic device used to measure muscle activity?
A) Individual Tooth-Wear Index
B) Sound-activated tape recorder
C) Grindcare
D) Beeswax biteplate
  • 68. From which language is the term 'bruxism' derived?
A) French
B) Latin
C) Greek
D) German
  • 69. What was removed from the definitions of sleep and awake bruxism in the 2025 consensus update?
A) The mention of the masseter muscle
B) In otherwise healthy individuals
C) The reference to circadian rhythms
D) The distinction between clenching and grinding
  • 70. What does the 2025 consensus update recommend to improve communication in the field?
A) Focusing only on clinical examination
B) Only using device-based assessments
C) Standardized terminology
D) Removing the term bruxism entirely
  • 71. Which of the following is described as an oral habit consisting of rhythmic or spasmodic non-functional gnashing?
A) Parafunctional grinding
B) Normal chewing
C) Masticatory function
D) Sleep apnea
  • 72. What is an abbreviation used for awake bruxism?
A) DBR
B) AB
C) SB
D) ASB
  • 73. How did the ICSD-2 reclassify sleep bruxism?
A) As a psychological condition
B) As a diurnal movement disorder
C) As a sleep related movement disorder
D) As a parasomnia
  • 74. What term did the ICSD-R use to define sleep bruxism?
A) An awake grinding disorder
B) A nighttime psychological condition
C) A stereotyped movement disorder
D) A chronic dental disease
  • 75. What was sleep bruxism classified as in the ICSD-R?
A) A dental pathology
B) A sleep related movement disorder
C) A parasomnia
D) An awake movement disorder
  • 76. What is secondary bruxism associated with?
A) Psychosocial factors only
B) Idiopathic factors
C) No other medical condition
D) Other medical conditions
  • 77. How is chronic sleep bruxism defined by duration?
A) Between one and two weeks
B) Exactly one month
C) Over a month
D) Less than a week
  • 78. What type of treatment is recommended due to low risk of morbidity?
A) Surgical intervention
B) High-dosage medication
C) Reversible treatment
D) Irreversible dental modification
  • 79. What is the simplest form of psychosocial treatment for bruxism?
A) Cognitive behavioral therapy
B) Medication
C) Hypnotherapy
D) Reassurance
  • 80. How can awake bruxism be reduced in many cases?
A) Avoiding all social contact
B) Using reminder techniques
C) Strict dietary changes
D) Complete immobilization of the jaw
  • 81. Which of these is mentioned as a potential management strategy?
A) Heavy sedation
B) Tooth extraction
C) Jaw wiring
D) Cognitive behavioral therapy
  • 82. Which medication is mentioned as a potential solution when bruxism is caused by SSRI usage?
A) Propranolol
B) Clonazepam
C) Amitriptyline
D) Buspirone
  • 83. Which type of splint is typically better tolerated by people with a sensitive gag reflex?
A) Upper splints
B) Full-coverage acrylic splints
C) NTI-TSS guards
D) Lower splints
  • 84. Which type of botulinum toxin is mentioned as effective for bruxism in the 2020 overview?
A) Type A
B) Type C
C) Type D
D) Type B
  • 85. What is a rare but documented adverse effect of botulinum toxin injections?
A) Permanent paralysis
B) Systemic infection
C) Total loss of taste
D) Bruising
  • 86. What type of devices are used to manage awake bruxism via biofeedback?
A) Surgical implants
B) Chemical sensory triggers
C) Fixed occlusal splints
D) Electromyographic monitoring devices
  • 87. Which of the following might be involved in an occlusal reorganization procedure?
A) Orthodontics
B) Dietary changes
C) Biofeedback sensors
D) Botulinum toxin injections
  • 88. Who documented the definition of bruxism in the year 610?
A) Xu Shen
B) Chao Yuanfang
C) Wang Huaiyin
D) Sigurd Peder Ramfjord
  • 89. Who suggested the term 'La bruxomanie' in 1907?
A) Bertrand S. Frohman
B) Sigurd Peder Ramfjord
C) Marie Pietkiewics
D) Chao Yuanfang
  • 90. Who is credited with coining the term 'bruxism' in 1931?
A) Xu Shen
B) Bertrand S. Frohman
C) Marie Pietkiewics
D) Wang Huaiyin
  • 91. Which periodontist championed the theory that occlusal factors caused bruxism in the 1960s?
A) Bertrand S. Frohman
B) Marie Pietkiewics
C) Chao Yuanfang
D) Sigurd Peder Ramfjord
  • 92. What is the current prevailing scientific model for the etiology of bruxism?
A) Primary malocclusion model
B) Purely behavioral model
C) Multifactorial, biopsychosocial model
D) Purely genetic model
  • 93. What emotion is often displayed by clenching teeth in humans and animals?
A) Contentment
B) Surprise
C) Anger
D) Happiness
  • 94. How many times does the phrase 'weeping and gnashing of teeth' appear in the Gospel of Matthew?
A) 7 times
B) 10 times
C) Once
D) 3 times
  • 95. In the Chinese proverb mentioned, what does it mean if a girl clenches her teeth?
A) She is hungry
B) She is trying to be prosperous
C) She hates her mother
D) She is angry at her father
  • 96. Which character in the film 'Requiem for a Dream' develops bruxism due to diet pills?
A) Henry Spencer
B) Bobbi Anderson
C) Sara Goldfarb
D) Grendel
  • 97. Which character in 'A Song of Ice and Fire' grinds his teeth loud enough to be heard half a castle away?
A) Hrothgar
B) Henry Spencer
C) Stannis Baratheon
D) Beowulf
  • 98. What do people in rave culture use to reduce dental damage from ecstasy-induced bruxism?
A) Ice cubes
B) Drinking water
C) Mouth guards
D) Pacifiers
  • 99. Bruxism is considered a potential contributing factor to which condition associated with methamphetamine use?
A) Gum disease
B) Meth mouth
C) Dry mouth
D) Tooth decay
  • 100. In the film 'Eraserhead', which character demonstrates sleep bruxism?
A) The baby
B) Henry Spencer
C) Mary X
D) The lady in the radiator
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