Temporomandibular joint disc position and shape in patients submitted to two protocols of rapid maxillary expansion and face mask therapy: A randomized clinical trial.

Autor: Tagawa DT; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.; Department of Orthodontics, Universidade Santa Cecília, Santos, Brazil., Wolosker AMB; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil., Florez BM; Department of Orthodontics, Universidade Santa Cecília, Santos, Brazil., Dominguez GC; Department of Orthodontics, Universidade de São Paulo (USP), São Paulo, Brazil., Yamashita HK; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil., Aidar LAA; Department of Orthodontics, Universidade Santa Cecília, Santos, Brazil., Junior HC; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
Jazyk: angličtina
Zdroj: Orthodontics & craniofacial research [Orthod Craniofac Res] 2024 Aug; Vol. 27 (4), pp. 615-625. Date of Electronic Publication: 2024 Mar 08.
DOI: 10.1111/ocr.12777
Abstrakt: Objective: The objective of this prospective study was to assess possible changes in the position and shape of the temporomandibular joint (TMJ) articular disc in patients treated with two protocols of rapid maxillary expansion (RME) and face mask (FM) therapy.
Methods: A sample of 88 patients with Class III or Class III subdivision malocclusions, aged between 6 and 13 years, were consecutively selected and divided into three groups (G): G1-34 patients were treated with RME, followed by FM therapy; G2-34 patients were treated using RME according to modified alternate rapid maxillary expansion and constriction (ALT-RAMEC) protocol, followed by FM therapy. These treated groups were randomly (1:1 allocation ratio) distributed according to the two treatment protocols. G3 - Control Group - 20 untreated patients were followed. Magnetic resonance imaging (MRI) TMJs were obtained before (T1) and after (T2) a treatment period or follow-up. McNemar test, Fisher's exact test and intra- and inter-observer concordance (K) were performed (p ≤ .05).
Results: There were no statistically significant differences in the baseline cephalometric variables at T1 between the groups. There were statistically significant differences between the groups (p < .001) in relation to the disc shape in T1, since G1 (8 TMJs -11.76%) presented higher occurrences of altered forms in comparison with G2 (no changes). No significant differences were observed in disc position CM and OM (G1 - p > .999; G2 - p = .063; G3 - p = .500) and shape (G1 - p > 0.999; G2 - p = .250; G3 - not calculable), between T1 × T2, in any of the groups studied.
Conclusion: The two treatment protocols did not have adverse effects on the position and shape of the TMJ disc, in a short-term evaluation.
(© 2024 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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