Correlation between Internal Derangement of the Temporo-Mandibular Joint and Ipsi-Lateral Mediotrusive Molar Interferences-A Condylographic Study Using Virtual Articulation

Objective: Aim of this pilot study was to test if molar interferences in symptomatic patients are suggesting altered condylographic tracings in terms of an internal TMJ structural disturbance, in particular an increased transversal joint mobility higher than 0.6mm in guided mediotrusive movements of both joints. Methods: Eighty-three symptomatic patients-suffering from signs and symptoms of a Temporo-Mandibular Disorder (TMD) from a private dental office in Munich were diagnosed with an occlusion-dictated TMD according to the clinical protocol of the Vienna School of Interdisciplinary Dentisty (VieSID). The Sagittal Condyle Inclination (SCI) was measured by condylographic examination with the Cadiax system and compared to the wear facet inclination of the mounted models by the Cadias 3D software. Results: Statistically there was no correlation between the facet inclinations and transversal joint mobility. The null hypothesis was confirmed. Conclusion: The authors conclude that symptomatic patients develop a muscular avoidance pattern towards the disturbing facets during mandibular dynamics with the result of a “joint protecting” reaction without ligamentous loosening.