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 ?
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.
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).
Observing this alteration type in patients affected by parafunctions can only strengthen this assumption.
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.
Prevalence of signs and symptoms of craniomandibular disorders and orofacial parafunction in 4-6-year-old African-American and Caucasian children.
This investigation also aimed to study possible associations between TMD symptoms and signs and related factors such as general health, oral parafunctions, trauma and recurrent headache.
Different queries regarding oral parafunctions were included in the questionnaire in two of three examinations.
Logistic regression analyses for the whole material and for the separate investigations were performed in order to find any possible associations between TMD-related symptoms or signs and age group, gender, health status, trauma and oral parafunctions.
A bad bite can break off natural teeth and crownwork, lead to tooth over-sensitivity, as well as a parafunction of the digestive apparatus, respiration, speech, cause headaches and problems with the stomach, and many other things.
All patients presented parafunction (infantile swallowing persistent and/or tongue thrust), as well as anomalies of dental number and malocclusions.