The interconnection between orthodontic treatment and Temporomandibular Disorder, in particular to orthopedic instability
Nemes Bálint
Dental Research Division
Dr. Varga Gábor
SE FOK Oktatási Centrum Árkövy terem
2025-03-17 13:30:00
Dr. Frank Dorottya
Dr. Huszár Tamás
Dr. Segatto Emil
Dr. Dobó Nagy Csaba
Dr. Vitályos Géza
Dr. Bogdán Sándor
We evaluated diagnostic records of selected 18 patients who reported previous TMD and had undergone splint therapy. Post-splint AOB was treated with skeletally anchored molar intrusion. We observed that occlusal splint wear due to condylar seating resulted in mandibular distorotation, while orthodontic molar intrusion restored these conditions (AOB) by autorotation of the mandible. All these effects could be visualized on mounted models and lateral cephalograms. Morphological changes in the condyle were analyzed with pre- and post-treatment CBCT images. Surface erosion and irregular condylar surfaces reduced significantly on both sides. Irregular TMJ space improved significantly. However, no differences in sclerosis were observed.
Occlusal splint therapy followed by orthodontic molar intrusion effectively restored CR-MI harmony, making it a proper method for orthodontic treatment of TMD patients.
Highlights:
1. In our examined study group there was a significant difference between MI and Centric „de jour” mandibular position, which difference increased after full time occlusal splint wear. For this reason, interdisciplinary monitoring of CR position by mounting models helps the effective treatment.
2. In our examined study group there was a significant difference between MI and post-splint CR mandibular position measured on the lateral cephs. For this reason, analyzing post-splint lateral cephs makes orthodontic diagnosis more accurate.
3. In the treated population 24/7 wear of hard acrylic occlusal stabilization splint effectively managed TMD signs and symptoms, resulting in occlusal changes and AOB.
4. Occlusal changes due to stabilization splint wear could be effectively treated by skeletally anchored molar intrusion.
5. The improvement of TMD could be detected as bone morphological changes on pre-treatment – post-treatment CBCT images.
