Effect of Dry Needling on Morphofunctional Capacity of Masticatory Muscles, and Bite Force in Patients with Temporomandibular Disorders of Muscular Origin

Autores

  • Mariah Acioli Righetti Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Veridiana Wanshi Arnoni Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Marcelo Palinkas Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil. National Institute of Science and Technology in Translational Medicine. SP, Brazil.
  • Nayara Soares da Silva Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Danilo Stefani Esposto Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Isabela Hallak Regalo Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Vitória Ricardo Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Paulo Batista de Vasconcelos Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Ligia Maria Napolitano Gonçalves Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil. National Institute of Science and Technology in Translational Medicine. SP, Brazil.
  • Simone Cecilio Hallak Regalo Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil.
  • Selma Siéssere Universidade de São Paulo, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology. SP, Brazil. National Institute of Science and Technology in Translational Medicine. SP, Brazil.

DOI:

https://doi.org/10.17921/2447-8938.2023v25n4p195-200

Resumo

Abstract
The presence of myofascial trigger points in the masticatory muscles can lead to pain and may be related to temporomandibular dysfunction. The dry needling technique (DN) is employed for mechanical disruption and deactivation of trigger points in skeletal muscles. The purpose of this observational longitudinal clinical study was to determine the morphofunctional capacity of the masseter and temporalis muscles, and bite force in patients with temporomandibular disorders of muscular origin after DN of the masseter muscle. Twenty-one patients with the presence of trigger points in the masseter muscle were selected. Electromyographic activity of the masseter and temporalis muscles was assessed during the mandibular tasks of rest, protrusion, right and left laterality, and maximal voluntary contraction (MVC). Muscle thickness at rest and dental clenching at MVC was measured with ultrasound. Molar bite force (right and left) was analyzed with a digital dynamometer. Patients were evaluated before and seven days after intervention with DN. Data were subject to the paired t test for dependent samples (p<0.05). There was significant difference in the left masseter muscle in right laterality (p=0.01), right temporalis muscle thickness in MVC (p=0.05), and right (p=0.01) and left (p=0.008) molar bite force, after DN. The authors suggest that DN was efficient in the positive changes in the morphofunctional performance of the stomatognathic system.

Keywords: Dry Needling. Masticatory Muscles. EMG. Muscle Thickness. Bite Force.

Resumo
A presença de pontos gatilhos miofasciais nos músculos mastigatórios pode gerar dor e estar relacionada à disfunção temporomandibular. A técnica de agulhamento a seco (AS) é utilizada para rompimento mecânico e desativação do ponto gatilho nos músculos esqueléticos. O objetivo deste estudo clínico longitudinal observacional foi determinar a capacidade morfofuncional dos músculos masseter e temporal, bem como a força de mordida, em pacientes com distúrbios temporomandibulares de origem muscular após AS no músculo masseter. Foram selecionados vinte e um pacientes com presença de pontos de gatilho no músculo masseter. A atividade eletromiográfica dos músculos masseter e temporal foi avaliada durante tarefas mandibulares de repouso, protrusão, lateralidade direita e esquerda, e contração voluntária máxima (CVM). A espessura muscular em repouso e a contração dental na CVM foram medidas por ultrassom. A força de mordida molar (direita e esquerda) foi analisada com um dinamômetro digital. Os pacientes foram avaliados antes e sete dias após a intervenção com DN. Os dados foram submetidos ao teste t pareado para amostras dependentes (p<0,05). Houve diferença significante no músculo masseter esquerdo na lateralidade direita (p=0,01), espessura do músculo temporal direito na CVM (p=0,05) e força de mordida molar direita (p=0,01) e esquerda (p=0,008), após AS. Os autores sugerem que o AS foi eficaz nas alterações positivas no desempenho morfofuncional do sistema estomatognático.

Palavras-chave: Agulhamento a Seco. Músculos Mastigatórios. EMG. Espessura Muscular. Força de Mordida.

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Publicado

2024-01-05

Como Citar

1.
Righetti MA, Arnoni VW, Palinkas M, Silva NS da, Esposto DS, Regalo IH, Ricardo V, Vasconcelos PB de, Gonçalves LMN, Regalo SCH, Siéssere S. Effect of Dry Needling on Morphofunctional Capacity of Masticatory Muscles, and Bite Force in Patients with Temporomandibular Disorders of Muscular Origin. J. Health Sci. [Internet]. 5º de janeiro de 2024 [citado 5º de março de 2024];25(4):195-200. Disponível em: https://journalhealthscience.pgsscogna.com.br/JHealthSci/article/view/11537

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