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Orofacial pain

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Orofacial pain
Dermatomes of the face
SpecialtyENT surgery, dentistry

Orofacial pain (OFP) is a general term covering any pain which is felt in the mouth, jaws and the face. Orofacial pain is a common symptom, and there are many causes.[1][2]

Orofacial pain is the specialty of dentistry that encompasses the diagnosis, management and treatment of pain disorders of the jaw, mouth, face and associated regions. These disorders as they relate to orofacial pain include but are not limited to temporomandibular muscle and joint (TMJ) disorders, jaw movement disorders, neuropathic and neurovascular pain disorders, headache, and sleep disorders.

Classification

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Defined boundaries of the orofacial pain region

International Classification of Diseases (ICD-11) is a new classification coming into effect as of January 1, 2022. It includes chronic secondary headaches and orofacial pain. The classification has been established by a close cooperation between International Association for the Study of Pain (IASP), World Health Organization (WHO) and the International Headache Society (IHS).[3]

There are 4 main classifications prior to ICD-11 which attempt to classify the causes of orofacial pain.[4]

It has also been suggested that the most basic etiologic classification of orofacial pain is into the following 3 groups:[9]

  1. Primarily somatic, arising from musculoskeletal (e.g. TMD pain or periodontal pain) or visceral structures (e.g. pulpal pain or pain from the salivary glands), and transmitted via an intact pain transmission and modulation system.
  2. Primarily neuropathic, which occurs as a result of abnormal or damaged pain pathways, e.g. a surgical or traumatic injury to a peripheral nerve.
  3. Primarily psychological, which is rare (See: psychogenic pain)

Diagnosis

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Diagnosis of orofacial pain can be difficult and can require multiple examinations and histories provided by the patient. The pain history is essential and will indicate any further examinations required.[10]

The correct diagnosis of orofacial pain requires an in-depth pain history which will include:

  • Location of the pain
  • Timing
  • Duration
  • Associated symptoms
  • Exacerbating and alleviating factors
  • Description of the type of pain experienced e.g. dull, aching, throbbing, burning, tingling or pulsating.

Other information and examinations include:

  • Full medical history
  • Full dental history
  • Full social history
  • Clinical examination
  • Radiographic examination

Differential diagnosis

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Clinical presentation of orofacial pain.[11]

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Management

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A multi-disciplinary approach is needed for orofacial pain disorders involving both non-pharmacological and pharmacological approaches which can be applied to the specific type of disorder.[12] Non-pharmacological approaches can include physical therapies and psychological support to effectively manage the facial pain and reduce the negative impact on quality of life and daily functioning.[10] Self-management interventions, such as education, jaw posture relaxation, and cognitive or behavioral self regulation, have been shown to improve long-term outcomes for patients with orofacial pain, specifically in patients with TMD.[13] Self-Administration of Sphenopalatine Ganglion Blocks (SPG or Pterygopalatine Ganglion) is an excellent approach to a wide variety of orofacial pain conditions.[citation needed]

Often chronic orofacial pain (lasting over 12 weeks) requires referral to a specialised branch of medicine or dentistry or continuation of treatment in a primary care setting, if symptoms cannot be managed otherwise.[14]

Epidemiology

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Orofacial pain is common problem. For example, in the United States, one report estimated that 22% of the general population had experienced some form of facial pain at some point in the 6-month period before questioning, of which 12% was toothache.[15] In the United Kingdom, 7% of the general population reported having some degree of chronic orofacial pain.[16] Other reports indicate a prevalence of 10–15% for TMD in the general population.[16]

A systematic review looking at the prevalence of orofacial pain found that highest prevalence was for pain on opening the mouth (21%-49%), muscle tenderness (17%-97%) and self-reported joint pain (5%-31%).[17]

Feline orofacial pain syndrome

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Feline orofacial pain syndrome is a condition in cats characterised by episodic unilateral oral pain and self-mutilation of the tongue. The aetiology is unknown but is believed to be a neuropathic inherited disorder. Common analgesics often do not work well and anti-convulsant analgesics are required to manage pain. The Burmese cat is predisposed.[18]

See also

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References

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  1. ^ Martin, WJ; Perez, RS; Tuinzing, DB; Forouzanfar, T (December 2012). "Efficacy of antidepressants on orofacial pain: a systematic review". International Journal of Oral and Maxillofacial Surgery. 41 (12): 1532–9. doi:10.1016/j.ijom.2012.09.001. PMID 23041255.
  2. ^ Horst, Orapin V.; Cunha-Cruz, Joana; Zhou, Lingmei; Manning, Walter; Mancl, Lloyd; DeRouen, Timothy A. (October 2015). "Prevalence of pain in the orofacial regions in patients visiting general dentists in the Northwest Practice-based REsearch Collaborative in Evidence-based DENTistry research network". The Journal of the American Dental Association. 146 (10): 721–728.e3. doi:10.1016/j.adaj.2015.04.001. PMC 7289192. PMID 26409981.
  3. ^ Benoliel, Rafael; Svensson, Peter; Evers, Stefan; Wang, Shuu-Jiun; Barke, Antonia; Korwisi, Beatrice; Rief, Winfried; Treede, Rolf-Detlef (January 2019). "The IASP classification of chronic pain for ICD-11: chronic secondary headache or orofacial pain". PAIN. 160 (1): 60–68. doi:10.1097/j.pain.0000000000001435. ISSN 0304-3959. PMID 30586072. S2CID 58556748.
  4. ^ Renton, T; Durham, J; Aggarwal, VR (May 2012). "The classification and differential diagnosis of orofacial pain". Expert Review of Neurotherapeutics. 12 (5): 569–76. doi:10.1586/ern.12.40. PMID 22550985. S2CID 32890328.
  5. ^ "ICHD-3 The International Classification of Headache Disorders 3rd edition". ICHD-3 The International Classification of Headache Disorders 3rd edition. Retrieved 2019-12-22.
  6. ^ "Classification of Chronic Pain, Second Edition (Revised) - IASP". www.iasp-pain.org. Retrieved 2019-12-22.
  7. ^ Orofacial pain : guidelines for assessment, diagnosis, and management. Leeuw, Reny de,, Klasser, Gary D.,, American Academy of Orofacial Pain. (Fifth ed.). Chicago. 2013. ISBN 978-0-86715-610-2. OCLC 828858986.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
  8. ^ Dworkin, S. F.; LeResche, L. (1992). "Research diagnostic criteria for temporomandibular disorders: review, criteria, examinations and specifications, critique". Journal of Craniomandibular Disorders: Facial & Oral Pain. 6 (4): 301–355. ISSN 0890-2739. PMID 1298767.
  9. ^ Hupp JR, Ellis E, Tucker MR (2008). Contemporary oral and maxillofacial surgery (5th ed.). St. Louis, Mo.: Mosby Elsevier. pp. 619–627. ISBN 9780323049030.
  10. ^ a b Ghurye, S.; McMillan, R. (December 2017). "Orofacial pain - an update on diagnosis and management". British Dental Journal. 223 (9): 639–647. doi:10.1038/sj.bdj.2017.879. ISSN 1476-5373. PMID 29074941. S2CID 22472962.
  11. ^ Orofacial pain : a clinician's guide. Vadivelu, Nalini,, Vadivelu, Amarender,, Kaye, Alan David. Cham: Springer. 2014. ISBN 978-3-319-01875-1. OCLC 870663277.{{cite book}}: CS1 maint: others (link)
  12. ^ Romero-Reyes, Marcela; Uyanik, James M. (2014). "Orofacial pain management: current perspectives". Journal of Pain Research. 7: 99–115. doi:10.2147/JPR.S37593. ISSN 1178-7090. PMC 3937250. PMID 24591846.
  13. ^ Aggarwal, Vishal R.; Fu, Yu; Main, Chris J.; Wu, Jianhua (2019). "The effectiveness of self-management interventions in adults with chronic orofacial pain: A systematic review, meta-analysis and meta-regression" (PDF). European Journal of Pain. 23 (5): 849–865. doi:10.1002/ejp.1358. ISSN 1532-2149. PMID 30620145. S2CID 58606988.
  14. ^ Banigo, Adonye; Watson, David; Ram, Bhaskar; Ah-See, Kim (2018-05-16). "Orofacial pain". BMJ. 361: k1517. doi:10.1136/bmj.k1517. ISSN 0959-8138. PMID 29769194. S2CID 21701778.
  15. ^ Hargreaves KM, Cohen S, eds. (2010). Cohen's pathways of the pulp. Berman LH (web editor) (10th ed.). St. Louis, Mo.: Mosby Elsevier. p. 50. ISBN 978-0-323-06489-7.
  16. ^ a b Zakrzewska, Joanna M (2013). "Multi-dimensionality of chronic pain of the oral cavity and face". The Journal of Headache and Pain. 14 (1): 37. doi:10.1186/1129-2377-14-37. PMC 3642003. PMID 23617409.
  17. ^ Macfarlane, T. V; Glenny, A-M; Worthington, H. V (2001-09-01). "Systematic review of population-based epidemiological studies of oro-facial pain". Journal of Dentistry. 29 (7): 451–467. doi:10.1016/S0300-5712(01)00041-0. ISSN 0300-5712. PMID 11809323.
  18. ^ Bellows, Jan (2022-01-21). Feline Dentistry. Hoboken, NJ: John Wiley & Sons. p. 109. ISBN 978-1-119-56803-2.
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