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Temporomandibular joint disc position and shape in patients submitted to two protocols of rapid maxillary expansion and face mask therapy: A randomized clinical trial.
Tagawa, Daniella Torres; Wolosker, Angela Maria Borri; Florez, Bruna Maluza; Dominguez, Gladys Cristina; Yamashita, Helio Kiitiro; Aidar, Luís Antônio de Arruda; Junior, Henrique Carrete.
Afiliación
  • Tagawa DT; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
  • Wolosker AMB; Department of Orthodontics, Universidade Santa Cecília, Santos, Brazil.
  • Florez BM; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
  • Dominguez GC; Department of Orthodontics, Universidade Santa Cecília, Santos, Brazil.
  • Yamashita HK; Department of Orthodontics, Universidade de São Paulo (USP), São Paulo, Brazil.
  • Aidar LAA; Graduate Program in Medicine (Clinical Radiology), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil.
  • Junior HC; Department of Orthodontics, Universidade Santa Cecília, Santos, Brazil.
Orthod Craniofac Res ; 27(4): 615-625, 2024 Aug.
Article en En | MEDLINE | ID: mdl-38456750
ABSTRACT

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 (11 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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Técnica de Expansión Palatina / Disco de la Articulación Temporomandibular / Aparatos de Tracción Extraoral / Maloclusión de Angle Clase III Límite: Adolescent / Child / Female / Humans / Male Idioma: En Revista: Orthod Craniofac Res Asunto de la revista: ODONTOLOGIA / ORTODONTIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Técnica de Expansión Palatina / Disco de la Articulación Temporomandibular / Aparatos de Tracción Extraoral / Maloclusión de Angle Clase III Límite: Adolescent / Child / Female / Humans / Male Idioma: En Revista: Orthod Craniofac Res Asunto de la revista: ODONTOLOGIA / ORTODONTIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido