Sandbox:remotework
Bruxism
Bruxism is defined as repeated involuntary grinding and clenching of teeth which can occur either diurnal or nocturnally. In 1907 Marie Pielkiewics coined a french term 'La Bruxomanie" for bruxism. Bruxism can be classified into awake bruxism and sleep bruxism based on the physiological sleep status of the individual. Etiology of bruxism can be categorized into three groups psychosocial factors, peripheral factors and pathophysiological factors. Multifactorial etiology causes involving brain neurotransmitters or basal ganglia. Bruxism affects men and women equally. Factors associated with an increased risk of bruxism include Obstructive sleep apnea, Alcohol abuse, caffeine intake, Smoking, Anxiety. The symptoms of bruxism, usually develop in the first decade of life, and start with symptoms such as appearance of the first primary upper and lower anterior teeth. Common complications of bruxism are tooth wear, tooth hypersensitivity. Bruxism is primarily diagnosed based on the clinical presentation. H/o complain of disturbance from the clicking or grating sound by the accompanied partners.The most common symptoms of bruxism include Involuntary rhythmic contractions of the masticator muscles during sleep. Removal of any offending agent responsible for bruxism is primary step in the management. Surgery is the main stay of treatment in the management of bruxism.
Historical Perspective
- In 1907 Marie Pielkiewics coined a french term 'La Bruxomanie" for bruxism.
- In 1931, Frohman first coined the term English term bruxism.
Classification
Bruxism can be classified into awake bruxism and sleep bruxism based on the physiological sleep status of the individual.
Awake Bruxism/Diurnal Bruxism | Sleep Bruxism/Nocturnal Bruxism |
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Day Time /Awake | Sleep |
Semi-Voluntary | Sterotyped |
Clenching predominant | Teeth grinding |
Definitions | |
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American Academy of Orofacial Pain (2008) | Diurnal or nocturnal parafunctional activity including clenching, bracing, gnashing, and grinding of the teeth. I |
The Academy of Prosthodontics (2005) |
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The International Classification of Sleep Disorders (2005) | Sleep-related bruxism is an oral activity characterized by grinding or clenching of the teeth during sleep, usually associated with sleep arousals. |
Causes
Etiology of bruxism can be categorized into three groups psychosocial factors, peripheral factors and pathophysiological factors.
Etiology of Bruxism | |
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Psychological | Common psychological factors responsible for bruxism include
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Peripheral |
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Pathological |
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Pathophysiology
- Bruxism is caused by the activation of reflex chewing activity; it is not a learned habit.
- Chewing is a complex neuromuscular activity that is controlled by reflex nerve pathways, with higher control by the brain.
- During sleep, the reflex part is active while the higher control is inactive, resulting in bruxism. In most people, bruxism is mild enough not to be a health problem; however, some people suffer from significant bruxism that can become symptomatic.
- As stated bruxism is considered to have multifactorial etiology. Multifactorial etiology causes involving brain neurotransmitters or basal ganglia.
- Pathophysiological Factors
- As bruxism often occurs during sleep, the physiology of sleep has been studied extensively especially the ‘arousal response’ in search of possible causes of disorder.
- Arousal response is a sudden change in the depth of the sleep during which the individual either arrives in the lighter sleep stage or actually wakes up.
- Such a response is accompanied by gross body movements, increased heart rate, respiratory changes, and increased muscle activity.
- It is derived that disturbances in central neurotransmitter system may be involved in the etiology of bruxism.
- It is hypothesized that the direct and indirect pathways of the basal ganglion, a group of five subcortical nuclei that are involved in the coordination of movements is disturbed in bruxer.
- The direct output pathway goes directly from the stratum to the thalamus from where afferent signals project to the cerebral cortex. The indirect pathway on the other hand passes by several other nuclei before reaching it to the thalamus.
- If there is imbalance between both the pathways, movement disorder results like Parkinson’s disease.
- The imbalance occurs with the disturbances in the dopamine-mediated transmission of an action potential. In case of bruxism there may be an imbalance in both pathways.
- Acute use of dopamine precursors like L-dopa inhibits bruxism activity and chronic long term use of l-dopa results in increased bruxism activity. SSRTs (serotonin reuptake inhibitors) which exert an indirect influence on the dopaminergic system may cause bruxism after long term use.
- Amphetamine which increases the dopamine concentration by facilitating its release has been observed to increase bruxism.
- Nicotine stimulates central dopaminergic activities which might explain the finding that cigarette smokers report bruxism two times more than the nonsmokers.
- Psychosocial Factors
- There is no proper description of conclusive nature of psychological factors role in bruxism because of the absence of large scale longitudinal trials.
Differential Diagnosis
Orofacial movements | Bruxism | Loud noticeable teeth grinding noise during sleep |
Pathological orofacial movements
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Tooth wear | ||
Jaw pain and fatigue |
The etiology of bruxism is unknown; the following factors may be associated with the condition.
Epidemiology and Demographics
Bruxism often occurs during sleep and can even occur during short naps. Bruxism is one of the most common sleep disorders: 30 to 40 million Americans grind their teeth during sleep.
Gender
- Bruxism affects men and women equally.
Age
- Bruxism commonly affects individuals younger than 6 years of age and its incidence declines as age increases.
Screening
There is insufficient evidence to recommend routine screening for bruxism.
Risk Factors
Factors associated with an increased risk of bruxism include:
- Obstructive sleep apnea
- Alcohol abuse
- Caffeine intake
- Smoking
- Anxiety
Natural History, Complications and Prognosis
Natural History
- The symptoms of bruxism, usually develop in the first decade of life, and start with symptoms such as appearance of the first primary upper and lower anterior teeth.
- The symptoms of bruxism typically develop in childhood and may persist into adult due to presence of other risk factors.
- Usually bruxism follows a benign course.
- If left untreated bruxism can lead to hypertrophy of masseter muscle accompanied by tenderness of TMJ, which manifests as otalgia.
Complications
Common complications of bruxism are
- Tooth wear
- Tooth hypersensitivity
- Tooth mobility
- Pain in the temporomandibular joint (TMJ) or jaw musculature
- Temporal headache,
- Poor sleep
- Signs of this parafunctional habit
- Indentation on the tongue
- Presence of linea alba along the biting plane of the buccal mucosa
- Gingival recessions
Diagnosis
Diagnostic study of choice
Bruxism is primarily diagnosed based on the clinical presentation.
- History of tooth grinding during sleep
- Confirmation by parents or bed partners.
History
- H/o complain of disturbance from the clicking or grating sound by the accompanied partners.
Symptoms
The most common symptoms of bruxism include
- Involuntary rhythmic contractions of the masticator muscles during sleep.
- Secondary symptoms may develop due to forceful grinding in some patients which include:
- Morning headaches
- Jaw pain
- Clicking in the temporomandibular joints
- Dental deformities may be seen however not disease specific not limited to
- Thermal sensitivity in the teeth
- Hypermobility
- Need for dental restorations
- Tooth wear on tooth surfaces that contact during biting or chewing
- Lateral grinding forces in particular can be particularly destructive.
- Sever cases of bruxism do present with
- injury to soft tissues of the mouth
- Dental fractures
- Difficulty with chewing
- Temporomandibular joint pain and dysfunction
- Head and neck pain
Treatment
Medical Therapy
- Removal of any offending agent responsible for bruxism is primary step in the management.
- Wait-and-see approach is recommended in cases with medical induced bruxism, as spontaneous remission is ensured with the cessation of the offending agent.
- Pharmacotherapy mainly concentrated to alleviate symptoms
- Buspirone and Gabapentin are the two recommended medications to manage bruxism
- Preferred regimen 1 : Buspirone 15 to 20 mg/day PO q12.
- Preferred regimen 2: Gabapentin 100 to 300 mg PO q24
Surgery
Surgery is the main stay of treatment in the management of bruxism.
Indications
The treatment of bruxism is indicated when there are any of these possible consequences:
- Mechanical wear of the teeth, which results in loss of occlusal morphology and flattening of the occlusal surfaces
- Hypersensitive teeth
- Loss of periodontal support
- Tooth fractures
- Restorations fractures, usually class I and class II restorations, fracture of crowns, and fixed partial prosthesis
- Restorations or dental implants failure
- Hypertrophy of masticatory muscles
- Tenderness and stiffness in jaw muscles
- When bruxism leads to limited mouth opening
- Temporomandibular pain
- Pain in the preauricular region
Labrynthitis
Diseases | Clinical manifestations | Para-clinical findings | Gold standard | Additional findings | |||||
---|---|---|---|---|---|---|---|---|---|
Symptoms | Physical examination | ||||||||
Lab Findings | Imaging | ||||||||
Acute onset | Recurrency | Nystagmus | Hearing problems | ||||||
Peripheral | |||||||||
BPPV[1][2][3] | + | + | +/− | − | − | − |
| ||
Vestibular neuritis[4] | + | +/− | + /−
(unilateral) |
− |
|
− | − |
| |
HSV oticus[5][6][7][8] | + | +/− | − | +/− |
|
+ VZV antibody titres |
|
||
Meniere disease[9][10] | +/− | + | +/− | + (Progressive) | − |
|
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Labyrinthine concussion | + | − | − | + | − |
|
| ||
Perilymphatic fistula[13][14][15] | +/− | + | − | + | − |
|
| ||
Semicircular canal
dehiscence syndrome |
+/− | + | − | +
(air-bone gaps on audiometry) |
− |
|
| ||
Vestibular paroxysmia | + | + | +/−
(Induced by hyperventilation) |
− |
|
− |
|
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Cogan syndrome[21][22][23] | − | + | +/− | + | Increased ESR and cryoglobulins |
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Vestibular schwannoma[24][25] | − | + | +/− | + |
|
− |
| ||
Otitis media[26][27] | + | − | − | +/− |
|
Increased acute phase reactants |
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| |
Aminoglycoside toxicity | + | − | − | + | − | − |
| ||
Recurrent vestibulopathy | + | − | − | − | − | − | − |
| |
Central | |||||||||
Vestibular migrain | – | + | +/− | +/− |
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− |
|
|
|
Epileptic vertigo | − | + | +/− | − |
|
− | − |
| |
Multiple sclerosis[34][35][36] | − | + | +/− | − | Elevated concentration of CSF oligoclonal bands |
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Brain tumors[37] | +/− | + | + | + | Cerebral spinal fluid (CSF) may show cancerous cells |
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| ||
Cerebellar infarction/hemorrhage | + | − | ++/− | − | − |
| |||
Brain stem ischemia | + | − | +/− | − |
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− |
|
| |
Chiari malformation[38][39] | − | + | + | − |
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− |
|
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Parkinson[40][41][42] | − | + | − | − | − |
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- ↑ Lee SH, Kim JS (June 2010). "Benign paroxysmal positional vertigo". J Clin Neurol. 6 (2): 51–63. doi:10.3988/jcn.2010.6.2.51. PMC 2895225. PMID 20607044.
- ↑ Chang MB, Bath AP, Rutka JA (October 2001). "Are all atypical positional nystagmus patterns reflective of central pathology?". J Otolaryngol. 30 (5): 280–2. PMID 11771020.
- ↑ Dorresteijn PM, Ipenburg NA, Murphy KJ, Smit M, van Vulpen JK, Wegner I, Stegeman I, Grolman W (June 2014). "Rapid Systematic Review of Normal Audiometry Results as a Predictor for Benign Paroxysmal Positional Vertigo". Otolaryngol Head Neck Surg. 150 (6): 919–24. doi:10.1177/0194599814527233. PMID 24642523.
- ↑ Mandalà M, Nuti D, Broman AT, Zee DS (February 2008). "Effectiveness of careful bedside examination in assessment, diagnosis, and prognosis of vestibular neuritis". Arch. Otolaryngol. Head Neck Surg. 134 (2): 164–9. doi:10.1001/archoto.2007.35. PMID 18283159.
- ↑ Wackym, Phillip A. (1997). "Molecular Temporal Bone Pathology: II. Ramsay Hunt Syndrome (Herpes Zoster Oticus)". The Laryngoscope. 107 (9): 1165–1175. doi:10.1097/00005537-199709000-00003. ISSN 0023-852X.
- ↑ Zhu, S.; Pyatkevich, Y. (2014). "Ramsay Hunt syndrome type II". Neurology. 82 (18): 1664–1664. doi:10.1212/WNL.0000000000000388. ISSN 0028-3878.
- ↑ Mishell JH, Applebaum EL (February 1990). "Ramsay-Hunt syndrome in a patient with HIV infection". Otolaryngol Head Neck Surg. 102 (2): 177–9. doi:10.1177/019459989010200215. PMID 2113244.
- ↑ Tada, Yuichiro; Aoyagi, Masaru; Tojima, Hitoshi; Inamura, Hiroo; Saito, Osamu; Maeyama, Hiroyuki; Kohsyu, Hidehiro; Koike, Yoshio (2009). "Gd-DTPA Enhanced MRI in Ramsay Hunt Syndrome". Acta Oto-Laryngologica. 114 (sup511): 170–174. doi:10.3109/00016489409128326. ISSN 0001-6489.
- ↑ Watanabe, Isamu (1980). "Ménière's Disease". ORL. 42 (1–2): 20–45. doi:10.1159/000275477. ISSN 1423-0275.
- ↑ Saeed SR (January 1998). "Fortnightly review. Diagnosis and treatment of Ménière's disease". BMJ. 316 (7128): 368–72. PMC 2665527. PMID 9487176.
- ↑ Dürrer, J.; Poláčková, J. (1971). "Labyrinthine Concussion". ORL. 33 (3): 185–190. doi:10.1159/000274994. ISSN 1423-0275.
- ↑ Choi MS, Shin SO, Yeon JY, Choi YS, Kim J, Park SK (April 2013). "Clinical characteristics of labyrinthine concussion". Korean J Audiol. 17 (1): 13–7. doi:10.7874/kja.2013.17.1.13. PMC 3936518. PMID 24653897.
- ↑ Fox, Eileen J.; Balkany, Thomas J.; Arenberg, Kaufman (1988). "The Tullio Phenomenon and Perilymph Fistula". Otolaryngology–Head and Neck Surgery. 98 (1): 88–89. doi:10.1177/019459988809800115. ISSN 0194-5998.
- ↑ Casselman JW (February 2002). "Diagnostic imaging in clinical neuro-otology". Curr. Opin. Neurol. 15 (1): 23–30. PMID 11796947.
- ↑ Seltzer S, McCabe BF (January 1986). "Perilymph fistula: the Iowa experience". Laryngoscope. 96 (1): 37–49. PMID 3941579.
- ↑ Lempert T, von Brevern M (February 2005). "Episodic vertigo". Curr. Opin. Neurol. 18 (1): 5–9. PMID 15655395.
- ↑ Watson SR, Halmagyi GM, Colebatch JG (February 2000). "Vestibular hypersensitivity to sound (Tullio phenomenon): structural and functional assessment". Neurology. 54 (3): 722–8. PMID 10680810.
- ↑ Hufner, K.; Barresi, D.; Glaser, M.; Linn, J.; Adrion, C.; Mansmann, U.; Brandt, T.; Strupp, M. (2008). "Vestibular paroxysmia: Diagnostic features and medical treatment". Neurology. 71 (13): 1006–1014. doi:10.1212/01.wnl.0000326594.91291.f8. ISSN 0028-3878.
- ↑ Strupp M, von Stuckrad-Barre S, Brandt T, Tonn JC (February 2013). "Teaching neuroimages: Compression of the eighth cranial nerve causes vestibular paroxysmia". Neurology. 80 (7): e77. doi:10.1212/WNL.0b013e318281cc2c. PMID 23400324.
- ↑ Hüfner K, Barresi D, Glaser M, Linn J, Adrion C, Mansmann U, Brandt T, Strupp M (September 2008). "Vestibular paroxysmia: diagnostic features and medical treatment". Neurology. 71 (13): 1006–14. doi:10.1212/01.wnl.0000326594.91291.f8. PMID 18809837.
- ↑ Vollertsen RS (May 1990). "Vasculitis and Cogan's syndrome". Rheum. Dis. Clin. North Am. 16 (2): 433–9. PMID 2189159.
- ↑ Hughes, Gordon B.; Kinney, Sam E.; Barna, Barbara P.; Tomsak, Robert L.; Calabrese, Leonard H. (1983). "Autoimmune reactivity in Cogan's syndrome: A preliminary report". Otolaryngology–Head and Neck Surgery. 91 (1): 24–32. doi:10.1177/019459988309100106. ISSN 0194-5998.
- ↑ Majoor, M. H. J. M.; Albers, F. W. J.; Casselman, J. W. (2009). "Clinical Relevance of Magnetic Resonance Imaging and Computed Tomography in Cogan's Syndrome". Acta Oto-Laryngologica. 113 (5): 625–631. doi:10.3109/00016489309135875. ISSN 0001-6489.
- ↑ Robert W. Foley, Shahram Shirazi, Robert M. Maweni, Kay Walsh, Rory McConn Walsh, Mohsen Javadpour & Daniel Rawluk (2017). "Signs and Symptoms of Acoustic Neuroma at Initial Presentation: An Exploratory Analysis". Cureus. 9 (11): e1846. doi:10.7759/cureus.1846. PMID 29348989. Unknown parameter
|month=
ignored (help) - ↑ E. P. Lin & B. T. Crane (2017). "The Management and Imaging of Vestibular Schwannomas". AJNR. American journal of neuroradiology. 38 (11): 2034–2043. doi:10.3174/ajnr.A5213. PMID 28546250. Unknown parameter
|month=
ignored (help) - ↑ "Ear infection - acute: MedlinePlus Medical Encyclopedia".
- ↑ Rettig E, Tunkel DE (2014). "Contemporary concepts in management of acute otitis media in children". Otolaryngol. Clin. North Am. 47 (5): 651–72. doi:10.1016/j.otc.2014.06.006. PMC 4393005. PMID 25213276.
- ↑ Ernfors P, Duan ML, ElShamy WM, Canlon B (April 1996). "Protection of auditory neurons from aminoglycoside toxicity by neurotrophin-3". Nat. Med. 2 (4): 463–7. PMID 8597959.
- ↑ Oh AK, Lee H, Jen JC, Corona S, Jacobson KM, Baloh RW (May 2001). "Familial benign recurrent vertigo". Am. J. Med. Genet. 100 (4): 287–91. PMID 11343320.
- ↑ Rutka JA, Barber HO (April 1986). "Recurrent vestibulopathy: third review". J Otolaryngol. 15 (2): 105–7. PMID 3712538.
- ↑ "The International Classification of Headache Disorders: 2nd edition". Cephalalgia. 24 Suppl 1: 9–160. 2004. PMID 14979299.
- ↑ Absinta M, Rocca MA, Colombo B, Copetti M, De Feo D, Falini A, Comi G, Filippi M (December 2012). "Patients with migraine do not have MRI-visible cortical lesions". J. Neurol. 259 (12): 2695–8. doi:10.1007/s00415-012-6571-x. PMID 22714135.
- ↑ Tarnutzer AA, Lee SH, Robinson KA, Kaplan PW, Newman-Toker DE (April 2015). "Clinical and electrographic findings in epileptic vertigo and dizziness: a systematic review". Neurology. 84 (15): 1595–604. doi:10.1212/WNL.0000000000001474. PMC 4408281. PMID 25795644.
- ↑ McDonald WI, Compston A, Edan G, Goodkin D, Hartung HP, Lublin FD, McFarland HF, Paty DW, Polman CH, Reingold SC, Sandberg-Wollheim M, Sibley W, Thompson A, van den Noort S, Weinshenker BY, Wolinsky JS (July 2001). "Recommended diagnostic criteria for multiple sclerosis: guidelines from the International Panel on the diagnosis of multiple sclerosis". Ann. Neurol. 50 (1): 121–7. PMID 11456302.
- ↑ Barrett L, Drayer B, Shin C (January 1985). "High-resolution computed tomography in multiple sclerosis". Ann. Neurol. 17 (1): 33–8. doi:10.1002/ana.410170109. PMID 3985583.
- ↑ Fazekas F, Barkhof F, Filippi M, Grossman RI, Li DK, McDonald WI, McFarland HF, Paty DW, Simon JH, Wolinsky JS, Miller DH (August 1999). "The contribution of magnetic resonance imaging to the diagnosis of multiple sclerosis". Neurology. 53 (3): 448–56. PMID 10449103.
- ↑ Dunniway, Heidi M.; Welling, D. Bradley (2016). "Intracranial Tumors Mimicking Benign Paroxysmal Positional Vertigo". Otolaryngology–Head and Neck Surgery. 118 (4): 429–436. doi:10.1177/019459989811800401. ISSN 0194-5998.
- ↑ Caldarelli M, Di Rocco C (May 2004). "Diagnosis of Chiari I malformation and related syringomyelia: radiological and neurophysiological studies". Childs Nerv Syst. 20 (5): 332–5. doi:10.1007/s00381-003-0880-4. PMID 15034729.
- ↑ Sarnat HB (2008). "Disorders of segmentation of the neural tube: Chiari malformations". Handb Clin Neurol. 87: 89–103. doi:10.1016/S0072-9752(07)87006-0. PMID 18809020.
- ↑ van Wensen, E.; van Leeuwen, R.B.; van der Zaag-Loonen, H.J.; Masius-Olthof, S.; Bloem, B.R. (2013). "Benign paroxysmal positional vertigo in Parkinson's disease". Parkinsonism & Related Disorders. 19 (12): 1110–1112. doi:10.1016/j.parkreldis.2013.07.024. ISSN 1353-8020.
- ↑ Steiner I, Gomori JM, Melamed E (1985). "Features of brain atrophy in Parkinson's disease. A CT scan study". Neuroradiology. 27 (2): 158–60. PMID 3990948.
- ↑ Kosta P, Argyropoulou MI, Markoula S, Konitsiotis S (January 2006). "MRI evaluation of the basal ganglia size and iron content in patients with Parkinson's disease". J. Neurol. 253 (1): 26–32. doi:10.1007/s00415-005-0914-9. PMID 15981079.