IADR Abstract Archives
Association between Temporomandibular Joint Degenerative Disease and Condylar Mobility
Objectives: Degenerative joint disease (DJD) of the temporomandibular joint (TMJ) is an inflammatory condition characterized by the deterioration of soft and hard tissues, therefore, it can predispose to the development of morphological and functional alterations, such as limited or increased condylar mobility (CM). Our aim was to determine the association between DJD of the TMJ and these CM disorders.
Methods: 111 TMJ Cone Beam Computed Tomography protocols from a database of San Bernardo`s Health Centre of Los Andes`s University were analyzed. Imagenological signs of DJD were evaluated using Schiffman`s Criteria (2014). CM was examined at maximum unforced opening based on the location of the condyle in relation to the articular eminence`s apex; then classified into hypomobility (condyle posterior to the apex), normal mobility (condyle and apex aligned) or hypermobility (condyle anterior to the apex). A statistical analysis of frequencies was used to classify subjects as healthy or with DJD and the type of CM, according to sex and age range. Chi-square test was used to assess the association between DJD and CM for left and right TMJs separately, and a multinomial logistic regression model to obtain the odds ratio of each type of CM.
Results: 90% of the patients were women. 73,8% subjects had at least one TMJ with DJD. Condyles were the most affected surface in both TMJs. Most frequent signs in condyles were flattening, osteophytes and erosion. Hypermobility was the prevailing CM in both TMJs. We found a statistically significant association between DJD and CM, both in right (p=0,003) and left (p=0,001) TMJs. There was a higher risk of hypermobility, with an OR of 1,2 (CI95%;0,280-5,214) on right TMJs and 1,6 (CI95%;0,271-9,793) on left TMJs.
Conclusions: We found an association between DJD and MC in both TMJs, more frequently in women in their early 20s to late 40s.
Methods: 111 TMJ Cone Beam Computed Tomography protocols from a database of San Bernardo`s Health Centre of Los Andes`s University were analyzed. Imagenological signs of DJD were evaluated using Schiffman`s Criteria (2014). CM was examined at maximum unforced opening based on the location of the condyle in relation to the articular eminence`s apex; then classified into hypomobility (condyle posterior to the apex), normal mobility (condyle and apex aligned) or hypermobility (condyle anterior to the apex). A statistical analysis of frequencies was used to classify subjects as healthy or with DJD and the type of CM, according to sex and age range. Chi-square test was used to assess the association between DJD and CM for left and right TMJs separately, and a multinomial logistic regression model to obtain the odds ratio of each type of CM.
Results: 90% of the patients were women. 73,8% subjects had at least one TMJ with DJD. Condyles were the most affected surface in both TMJs. Most frequent signs in condyles were flattening, osteophytes and erosion. Hypermobility was the prevailing CM in both TMJs. We found a statistically significant association between DJD and CM, both in right (p=0,003) and left (p=0,001) TMJs. There was a higher risk of hypermobility, with an OR of 1,2 (CI95%;0,280-5,214) on right TMJs and 1,6 (CI95%;0,271-9,793) on left TMJs.
Conclusions: We found an association between DJD and MC in both TMJs, more frequently in women in their early 20s to late 40s.