Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology
Psychological variables and temporomandibular disorders: Distress, coping, and personality
Section snippets
Sample and procedure
The design of this research is an age- and sex-matched controlled study conducted in a tertiary care facility hospital in the Valencian Community (Spain). All the patients residing in the area of reference of the University of Valencia General Hospital who show temporomandibular symptoms and wish to be treated by the public health services are sent to the Stomatology Service of this hospital. In this service, the data were collected for a period of 6 months. Approximately 425 patients were
Statistical analysis
A multiple analysis of variance (MANCOVA) was carried out to determine the existence of differences between the muscular, articular and the control groups, introducing age as a covariable. Previously, it was necessary to check the hypothesis of homoscedasticity through the Box test (M = 246.94; P > .05), given the absence of uniformity in the size of the groups.16 The MANCOVA is more robust than the simple variance analysis (ANOVA); therefore, the differences are not increased because of the number
Differences between the muscular, articular, and control groups
The analysis reflects the total score of the BSI, the coping strategies measured by COPE, and the personality factors evaluated through NEO-PI-R. The MANCOVA results showed that, overall, the differences found were significant, with 22% of the variance of the combination of variables included explaining the inclusion in the group. The differences between the groups showed the presence of greater distress and lesser use of the positive reinterpretation strategy in the TMD patients comparing to
Discussion
In this paper we are searching for specific characteristics in personality, coping strategies, and levels of distress in patients with TMD, attempting to allay diverse limitations present in the investigations reviewed. Selection of the sample was performed according to RDC/TMD.4 The clinical group was divided into muscular and articular groups since they seem to exhibit different characteristics both in the clinical presentation of the disorders,17 as well as in the aspect regarding the
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