The effects of TMJ symptoms on skeletal morphology in orthodontic patients with TMJ disc displacement

Abstract

This study suggests that TMJ DD is associated with altered skeletal morphology, but TMJ symptoms do not significantly influence the relationships between TMJ DD and skeletal morphology.

The relation of cephalometric features to internal derangements of the temporomandibular joint: A systematic review and meta‐analysis of observational studies

“…[23][24][25]29,30 In addition, the SNB angle 15,17,24,26,27,[29][30][31][32] decreased while the ANB angle increased. 17,24,25,[29][30][31][32] However, considerable heterogeneity was also observed in the analysis of the SNB and ANB angle, possibly caused by the low consistency of the landmarks A and B in different studies. 33 The posterior facial height (S-Go) 17,25,[29][30][31][32] and the facial height ratio (S-Go/Na-Me) decreased 17,23,25,[29][30][31][32] without significant alteration of the anterior facial height (Na-Me), 17,[23][24][25][26][27][28][29][30][31][32] possibly due to retrusion and rotation of the mandible.…”

“…with a deteriorated ID severity, 13 possibly due to the changed mechanical load. 14 In addition, either the cranial base or the maxillofacial framework was found to be related to the structural change in the joint, including condyle destruction and disc displacement 15,16 ; however, the symptoms appeared to be irrelevant, 12,17,18 which highlighted the potential association between TMJ internal structure and craniofacial morphology. Despite the results of previous studies, the relationship between ID and craniofacial morphology could not be validated satisfactorily due to limited information and poor inter-study consistency.…”

Relationship between orthodontics and temporomandibular disorders

“…In literature, the anterior open bite is the most common occlusion disorder in patients with TMDs and it is attributed to biomechanical imbalance of the TMJ that induce abnormality of the articular disk 38 . On the other hand, the incorrect position of articular disc has been accused of causing changes in the skeletal morphology of the patients, but without a relevant occurrence of symptoms of the TMJ region 39 .…”

Assessment of Occlusal Appliance in Repositioning of the Temporomandibular Joint Anterior Disc Displacement With Reduction: A 3 to 36 Months Follow-Up

“…Помимо нарушения функ-ции нижней челюсти передний вывих диска мо-жет приводить к развитию остеоартроза и умень-шению высоты мыщелка. В последние годы все больше внимания привлекает связь между перед-ним вывихом диска и ростом нижней челюсти [14,15]. K.P.…”