1. Abnormal or disordered function.
2. dentistry Movements of the mandible that are outside normal function (e.g., bruxism).


1. In dentistry, movements of mandible that are outside normal function (e.g., bruxism).
2. Abnormal or disordered function.


n the habitual movements (e.g., bruxism, clenching, and rocking of teeth using teeth for tools) that are normal motions associated with mastication, speech, or respiratory movements and that result in worn facets and other problems associated with occlusal trauma. Also called
parafunctional habits or
oral habits.
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References in periodicals archive ?
Second is the behavioural mechanism that promotes poor health behaviours like smoking, alcoholism, consuming unhealthy diet, poor oral hygiene habits, parafunction etc6.
Hence, the results of comparative analyses of target features and oral health quality for statistically relevant differences have shown that the oral health quality is in accordance with the age and denture type and depends on the following: basic difficulties, IKP contact, tooth mobility, paradontopathy, parafunction activities of OF system (bruxism), arthropathy, time elapsed from tooth edentulation to denture embedding, denture stability, comfort/discomfort in wearing dentures, etc.
Finite element analysis of mechanism of cervical lesion formation in simulated molars during mastication and parafunction.
Other soft and hard tissues, such as the palate, floor of mouth, buccal mucosa, non-tooth supporting bone, and tongue (eg, mucosal diseases, neoplasms, pain related to parafunction or trauma).
While most patients could adapt to the raised vertical dimension, it has been reported that some patients exhibited headache, muscle fatigue, sore teeth, and parafunction.
2) Although the etiology of bruxism is attributed to peripheral factors such as occlusal interferences and key factors such as neuro-physiopatological processes, personality, and stress, it is widely accepted that the genesis of this parafunction is multifactorial.
They address neurobiological considerations for occlusal parafunction and temporomandibular disorders, orthopedic considerations in the masticatory system, the anatomical basis of occlusion, the role and evaluation of the muscles of the stomatognathic system, the effect of occlusal forces on periodontal disease, bite splint therapy, and dentist-ceramist communication.
Nowadays, genetically modified food can cause pre-conditions for development of allergic reaction by means of parafunction of the nervous and endocrine system.
Associations between a history of breast feeding, malocclusion and parafunction al habits in Puerto Rican children.
That is why the treatment the initial treatment must be directly focused to remove the parafunction in order to reduce the trauma present at the occlusion level and implicitly on the temporo-mandibular joint components and muscles (Wright, 2005).
This was not unexpected, as individuals who bite their nails are almost always aware of their parafunction, whereas awareness of tooth clenching or grinding, even during the daytime, is rare; 23 and 19% respectively of parents of children in the age groups of 3 and 5 years reported an occurrence of tooth clenching or grinding.