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Evaluation of temporomandibular joints after orthognathic surgery – the anamnestic and clinical index according to Helkimo

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Artur Matthews‑Brzozowski, Anna Böhm, Elżbieta Kaczmarek



2/2014/XLII s. 17–22
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Fraza do cytowania: Matthews‑Brzozowski A., Böhm A., Kaczmarek E. Evaluation of temporomandibular joints after orthognathic surgery – the anamnestic and clinical index according to Helkimo. Dental Forum. 2014;XLII(2):17–22.

Introduction. Skeletal disorders require orthodontic preparation as part of the process of combined surgical and orthodontic treatment planning. The displacement of condylar head to glenoid fossa or to the articulating disc as well as changes in the muscular function can occur as a result of the treatment of morphological disorders. Such displacements and rotations of the condylar long axis can lead to temporomandibular dysfunction. Aim. The purpose of the study was to assess the influence of orthognathic surgery on the temporomandibular function on the basis of the anamnestic and clinical dysfunction index according to Helkimo performed before and after surgical treatment of mandibular prognathism. Material and methods. The material included 20 patients with diagnosed skeletal class III malocclusion. The following examinations were conducted in all patients prior to and 3–6 months after the orthognathic surgery: a subjective examination – anamnesis including the anamnestic index according to Helkimo (Ai); and an objective examination – examination chart and clinical dysfunction index according to Helkimo (Di). Results. The number of individuals without subjective masticatory dysfunction symptoms (anamnestic index according to Helkimo) significantly increased to 14 after the surgery. However, the evaluation of moderate and severe subjective symptoms in the studied group showed no statistically significant changes before and after the operation. Mild symptoms (Di‑I) of the clinical dysfunction index according to Helkimo were the most frequent in patients before and after surgical treatment. The number of patients with moderate symptoms (Di‑II) decreased after the operation. Conclusions. The clinical dysfunction index according to Helkimo cannot be assessed on the basis of the anamnestic index.

Key words: temporomandibular joint, mandibular prognathism, vertical ramus osteotomy, anamnestic index according to Helkimo, clinical dysfunction index according to Helkimo.





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