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[Orofacial parafunctions in relation to the function and dysfunction of the masticatory apparatus]
1Istituto Policattedra di Clinica Odontostomatologica, Università degli Studi di Torino.
Minerva Stomatologica
|October 1, 1991
Summary
Dento-oro-facial parafunctions are common in both cranio-mandibular disorder patients and controls. While parafunctions and dysfunction often coexist, they are not interdependent, though they can worsen each other.
Area of Science:
- Dental Science
- Orthodontics
- Craniomandibular Disorders
Background:
- Dento-oro-facial parafunctions are habits like bruxism or clenching that can impact oral health.
- Understanding the prevalence of these parafunctions in individuals with cranio-mandibular disorders (CMD) is crucial for effective management.
Purpose of the Study:
- To assess the prevalence of dento-oro-facial parafunctions.
- To examine the relationship between parafunctions and cranio-mandibular disorders.
- To identify contributing factors to dental wear in these populations.
Main Methods:
- Objective examination of dental wear.
- Questionnaire assessing parafunctional habits in 108 CMD patients and a control group.
- Development and application of an Individual Wear Index.
Main Results:
- High prevalence of parafunctions observed in both CMD patients and control groups, with no significant differences.
- Dental wear was comparable between groups, but showed a clear age-proportional gradient.
- Muscular hyperactivity, loss of posterior support, and deep bite were identified as facilitating structural causes.
Conclusions:
- Dysfunction and parafunction are not interdependent but frequently coexist and can exacerbate each other.
- The findings highlight the complex interplay between parafunctional habits, structural factors, and cranio-mandibular health.