Effects of Parkinson's disease on molar bite force, electromyographic activity and muscle thickness of the masseter, temporal and sternocleidomastoid muscles: A case‐control study

Verri, Edson Donizetti; Silva, Gabriel Pádua da; Fioco, Evandro Marianetti; Silva, Nayara Soares da; Fabrin, Saulo; Zanella, Cesar Augusto Bueno; Garrefa, Camila Roberta; Júnior, Milton Faria; Siéssere, Selma; Hallak, Jaime Eduardo Cecílio; Palinkas, Marcelo; Chaves, Thaís Cristina; Regalo, Simone Cecílio Hallak

doi:10.1111/joor.12824

Cited by 24 publications

(16 citation statements)

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“…SCM thickness was less in our study than in many previously published reports 17‐20 . This may be because the age of participants included in our study group (mean ± SD of 79.2 ± 10.7 years) was higher than that of participants included in previous studies.…”

Section: Discussioncontrasting

confidence: 71%

Ultrasound‐Guided Injection of the Sternocleidomastoid Muscle: A Cadaveric Study with Implications for Chemodenervation

Kim

Kang

et al. 2020

PM&R

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Background Ultrasound guidance may improve the accuracy of botulinum toxin injection, but studies of its potential for cervical dystonia treatment are lacking. Objective To determine the accuracy of ultrasound‐guided injection in the sternocleidomastoid muscle (SCM). Design Observational study. Setting Tertiary care university hospital. Participants Eighteen embalmed cadavers. Interventions In total, 36 SCMs from 18 embalmed cadavers were examined. One physician performed ultrasound scans to divide each SCM into quarters and evaluated its cross‐sectional area (CSA) and thickness at each of three meeting points between adjacent quarters. Under ultrasound guidance, another experienced physician injected methylene blue solution at one of the three points, using the in‐plane technique (12 specimens per point; right SCM 3 mL, left SCM 5 mL). One anatomist dissected all cadavers and measured the distance of dye dispersion along the longitudinal axis of each muscle. Dispersion ratio was calculated as longitudinal dye dispersion divided by SCM length. Main Outcome Measures SCM thickness and CSA; dye dispersion patterns (dispersion distance and dispersion ratio). Results SCM thickness and CSA were greatest at the middle injection point (mean ± SD of 6.6 ± 2.0 mm and 1.4 ± 0.6 cm2, respectively). All injections were successful, except in one case where the SCM was thin and the dye reached the omohyoid muscle. Mean longitudinal dye dispersion and dispersion ratio were significantly greater when the volume was 5 mL. There were no statistically significant differences in dispersion patterns among the three injection points. Conclusions Ultrasound‐guided intramuscular injection can be performed with good accuracy in the SCM, as ultrasound can be used to evaluate SCM thickness and CSA. Higher volumes of injection solution appear to diffuse better, but further clinical studies are required to determine optimal injection volume.

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Section: Discussioncontrasting

confidence: 71%

Ultrasound‐Guided Injection of the Sternocleidomastoid Muscle: A Cadaveric Study with Implications for Chemodenervation

Kim

Kang

et al. 2020

PM&R

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“…Leitner et al (15) reported mean TMT in lung cancer and melanoma patients of 6.1 and 6.2 mm, respectively. Donizetti et al (20) calculated that the mean thickness of anterior temporal muscles in patients with Parkinson's disease and control groups in the maximum voluntary contraction (MVC) was 8.3 and 7.2 mm, respectively. Ranganathan et al (14) reported the mean TMT in adult trauma patients of 9.0 mm.…”

Section: Discussionmentioning

confidence: 99%

Predictive Value of Temporal Muscle Thickness Measurements on Cranial Magnetic Resonance Images in the Prognosis of Patients With Primary Glioblastoma

et al. 2020

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Objective: To investigate the predictive value of prognosis of primary GBM patients using TMT on three-dimensional (3D) MR images of the brain. Methods: Data of 130 patients with primary GBM from the TCGA-GBM database were analyzed retrospectively. TMT was measured on the axial plane by multi-planar reformation (MPR) of T1WI MR images perpendicular to the long axis of the temporal muscle at the level of the orbital roof. The axial MR plane was oriented parallel to the anterior commissure-posterior commissure line. Student's t -test or Mann–Whitney U -test was utilized to determine whether there were significant differences in the TMT and OS between male and female patients. The Pearson correlation analysis was adopted to evaluate the correlation between the age at GBM diagnosis and TMT. All patients were divided into two groups based on their median TMT, and the Kaplan–Meier curve was used to calculate the OS curve. The association between TMT and OS of GBM patients, as well as the multivariate analysis of TMT and other clinical factors affecting the survival time, was evaluated with Cox regression model. Results: TMT was a risk factor for the prognosis of GBM with its hazard ratio (HR) of 0.802 (95% CI 0.698–0.922; P = 0.002; Cox regression model). Grouped by median TMT, the group with above-median TMT demonstrated a significant increase in survival time (15.6 months) compared with the one with below-median TMT (11.2 months) ( P < 0.001; log-rank test). In the multivariate survival analysis using a Cox regression model, TMT (HR 0.863; 95% CI 0.748–0.996; P = 0.044), age at the diagnosis of GBM (HR 1.042; 95% CI 1.024–1.060; P < 0.001), and concurrent chemoradiotherapy (HR 0.510; 95% CI 0.336–0.775; P = 0.002) were significantly associated with survival time. Conclusion: TMT as an independent predictor is sensitive to the survival prognosis of primary GBM patients, which has potential to predict the survival time.

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“…Several studies have analyzed the electromyographic activity of masticatory muscles in different situations of urban populations such as age, sex, temporomandibular dysfunction, chronic degenerative diseases, dentition status, and oral parafunctional habits [15][16][17][18], but there is a gap in the literature that does not show the masticatory muscle behavior of specific populations with eating habits of native villagers, such as indigenous populations.…”

Section: Discussionmentioning

confidence: 99%

Stomathognatic system function in indigenous people from Brazilian Xingu villages: An electromyographic analysis

et al. 2020

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The maintenance of postural balance can be influenced by the lifestyle of a population. This study aimed to determine the electromyographic activity of the masseter and temporalis muscles during mandibular tasks and habitual and non-habitual chewing in indigenous individuals to reveal the differences among white Brazilian individuals. Sixty Brazilians (18 and 28 years) were divided into two groups: 30 Xingu indigenous individuals and 30 white Brazilian individuals, with 20 men and 10 women in each group. The individuals were assessed using the normalized electromyographic activity of mandibular tasks (rest, protrusion, right and left laterality) and electromyographic activity of masticatory cycles in habitual (peanuts and raisins) and non-habitual (Parafilm M) chewing. Data were analyzed using Student’s t-test (p < .05). Comparisons between the groups demonstrated significant differences. Indigenous individuals group presented a decrease in the normalized electromyographic activity of the masticatory muscles during mandibular rest [right masseter (p = .002) and left masseter (p = .004) muscles]. There was increase in the normalized electromyographic activity during protrusion [left temporal (p = .03) muscle]. There was increase in the electromyographic activity during chewing: peanuts [right masseter (p = .001), left masseter (p = .001) and right temporal (p = .01) muscles], raisins [right masseter (p = .001), left masseter (p = .002), right temporal (p = .008), left temporal (p = .01) muscles] and Parafilm M [left masseter muscle (p = .05)]. From the findings of this study, we concluded that in the comparison between indigenous and white individuals, positive changes were observed in the electromyographic pattern of the masticatory muscles in the mandibular postural conditions, with greater masticatory efficiency in the indigenous group.

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Effects of Parkinson's disease on molar bite force, electromyographic activity and muscle thickness of the masseter, temporal and sternocleidomastoid muscles: A case‐control study

Cited by 24 publications

References 50 publications

Ultrasound‐Guided Injection of the Sternocleidomastoid Muscle: A Cadaveric Study with Implications for Chemodenervation

Ultrasound‐Guided Injection of the Sternocleidomastoid Muscle: A Cadaveric Study with Implications for Chemodenervation

Predictive Value of Temporal Muscle Thickness Measurements on Cranial Magnetic Resonance Images in the Prognosis of Patients With Primary Glioblastoma

Stomathognatic system function in indigenous people from Brazilian Xingu villages: An electromyographic analysis

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