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Trismus is a condition of restricted opening of the mouth. [1] [2] The term was initially used in the setting of tetanus. [2] Trismus may be caused by spasm of the muscles of mastication or a variety of other causes. [3] Temporary trismus occurs much more frequently than permanent trismus. [4]
Prolonged mouth opening (hyper-extension) is also suggested as a possible cause. It is thought that this leads to microtrauma and subsequent muscular hyperactivity. This may occur during dental treatment, with oral intubation whilst under a general anesthetic , during singing or wind instrument practice (really these can be thought of as ...
The degree of mouth opening is also determined by the severity of oral symptoms, such as recurring or persistent glossitis and stomatitis, a fact that many researchers ignore. This phenomenon is explained by the term Reflectory Trismus, where the above symptoms dictate the degree of mouth opening through activation of the 5th and 9th cranial ...
1. Mandibular trismus – restricted mouth opening to its full extent (of approximately 40mm) may be present with large swellings typically due to acute bacterial infection of affected gland. 2. Respiratory distress – this could present in the form of stridor, use or reliance on accessory muscles of respiratory, nasal flaring, or wheeze ...
Consequently, an open mouth posture can lead to malocclusions and problems in swallowing. Other causes of open-mouth posture are the weakness of lip muscles, overall lack of tone in the body or hypotonia, and prolonged/chronic allergies of the respiratory tract.
Possibly limited mouth opening (trismus) Possibly trismus, joint noises (e.g. clicking upon opening) and deviation of mandible The presence of dental plaque or infection beneath an inflamed operculum without other obvious causes of pain will often lead to a pericoronitis diagnosis; therefore, elimination of other pain and inflammation causes is ...
Trismus (restricted mouth opening). [11] Pain or tenderness of the temporomandibular joints, [11] which may manifest as preauricular pain (in front of the ear), or pain referred to the ear . [14] Clicking of the temporomandibular joints. [5] Headaches, particularly pain in the temples, [5] caused by muscle pain associated with the temporalis ...
Oromandibular dystonia (OMD) is a form of focal dystonia that affects varying areas of the head and neck including the lower face, jaw, tongue and larynx. The spasms may cause the mouth to pull open, shut tight, or move repetitively. Speech and swallowing may be distorted.