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Stomatologija 2019; 21 (1): 18-21 200 KB

Comparison of pressure pain threshold between muscles in the contracted and relaxed state in patients with myofascial pain: a cross-sectional study

Rodrigo Lorenzi Poluha^*, Matheus Cavassani Pereira^*, Rafael Dos Santos Silva^*

Summary

Objective. The aim of this study was to compare the Pressure Pain Threshold (PPT) of the masseter and temporal muscles in the contracted and relaxed state between patients with myofascial pain (MFP) and asymptomatic individuals.

Materials and methods. Were included 40 women divided into two groups: test group – 20 individuals with MFP; control group – 20 asymptomatic individuals. The PPT was measured using a digital algometer. First. PPT was obtained with the relaxed muscles and soon after with the contracted muscles. To compare the mean value of the PPT of each muscle between the groups the independent Student's t-test was used. To compare the means value of the PPT between contracted and relaxed musculature within each group, the Paired Student's t-test was used. All the tests were conducted with a 5% significance level.

Results. Patients in Test group presented lower mean PPT values in relation to Control group (p<0.05). There was an increase in the mean PPT values with contracted muscles, but this increase was not statistically significant (p>0.05).

Conclusion. Patients with MFP present lower PPT than asymptomatic individuals. Muscle contraction was able to increase PPT in relation to relaxed muscles, but not in a statistically significant way.

Key words: masticatory muscle, myofascial pain, pressure pain threshold.

Received: 25 08 2018

Accepted for publishing: 20 03 2019

^*Department of Dentistry. State University of Maringá. Maringá. PR. Brazil

Address correspondence to Rodrigo Lorenzi Poluha. Department of Dentistry. State University of Maringá. Mandacaru Avenue, 1550. Zip code: 87080-000. Maringá. Paraná. Brazil.

E-mail: rodrigopoluha@gmail.com



	Baltic Dental and Maxillofacial Journal

March, 2019, Vol. 21, No. 1 CONTENTS REVIEWS Diagnostic methods and treatment strategies of impacted maxillary canines: A literature review Viktorija Grybienė, Donata Juozėnaitė, Kristina Kubiliūtė 3-12 SCIENTIFIC ARTICLES A population based study of multiple myeloma patients with medication-related osteonecrosis of the jaw Daiga Auzina, Anda Slaidina, Marina Sevastjanova, Renars Erts, Aivars Lejnieks, Sandra Lejniece 13-17 Comparison of pressure pain threshold between muscles in the contracted and relaxed state in patients with myofascial pain: a cross-sectional study Rodrigo Lorenzi Poluha, Matheus Cavassani Pereira, Rafael Dos Santos Silva 18-21 REVIEWS Types of root resorptions related to orthodontic treatment Giedrė Ruškytė, Donata Juozėnaitė, Kristina Kubiliūtė 22-27 SCIENTIFIC ARTICLES Orthodontic treatment complexity, outcome and need among school age patients of Lithuanian university of health sciences clinic of orthodontics Rokas Liausas, Zygimantas Labanauskas, Vilma Svalkauskiene, Dalia Smailiene, Justina Vaiciuniene 28-32 © 2019 Stomatologija		Stomatologija 2019; 21 (1): 18-21 200 KB Comparison of pressure pain threshold between muscles in the contracted and relaxed state in patients with myofascial pain: a cross-sectional study Rodrigo Lorenzi Poluha^, Matheus Cavassani Pereira^, Rafael Dos Santos Silva^* Summary Objective. The aim of this study was to compare the Pressure Pain Threshold (PPT) of the masseter and temporal muscles in the contracted and relaxed state between patients with myofascial pain (MFP) and asymptomatic individuals. Materials and methods. Were included 40 women divided into two groups: test group – 20 individuals with MFP; control group – 20 asymptomatic individuals. The PPT was measured using a digital algometer. First. PPT was obtained with the relaxed muscles and soon after with the contracted muscles. To compare the mean value of the PPT of each muscle between the groups the independent Student's t-test was used. To compare the means value of the PPT between contracted and relaxed musculature within each group, the Paired Student's t-test was used. All the tests were conducted with a 5% significance level. Results. Patients in Test group presented lower mean PPT values in relation to Control group (p<0.05). There was an increase in the mean PPT values with contracted muscles, but this increase was not statistically significant (p>0.05). Conclusion. Patients with MFP present lower PPT than asymptomatic individuals. Muscle contraction was able to increase PPT in relation to relaxed muscles, but not in a statistically significant way. Key words: masticatory muscle, myofascial pain, pressure pain threshold. Received: 25 08 2018 Accepted for publishing: 20 03 2019 ^*Department of Dentistry. State University of Maringá. Maringá. PR. Brazil Address correspondence to Rodrigo Lorenzi Poluha. Department of Dentistry. State University of Maringá. Mandacaru Avenue, 1550. Zip code: 87080-000. Maringá. Paraná. Brazil. E-mail: rodrigopoluha@gmail.com