Assessment of Masseter Muscle Thickness in an Adult Nigerian Population: An Ultrasound Based Study

Egwu, Ogugua Augustine; Njoku, C.; Ukoha, Ukoha Ukoha; Eteudo, Albert N; Mgbachi, Chinwe Esther

doi:10.7439/ijbr.v3i3.304

Cited by 7 publications

(18 citation statements)

References 12 publications

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“…The mean masseter muscle thickness during relaxation and contraction phases in this study are lower than those reported from previous studies from the Nigerian, Turkish and Japanese populations. The previous Nigerian study by Egwu et al 19 reported a higher mean thickness. This may be due to ethnic and/or environmental differences as the sample population of the earlier work was amongst the Igbo extraction (south-eastern Nigeria), well known for their built and physique unlike this present study carried out amongst the population in the South western Nigeria (Yoruba ethnic group) with less built.…”

Section: Discussionmentioning

confidence: 77%

“…These variations in thickness of the masseter muscle across the different populations may be associated with racial differences and the relative indulgence in masticatory activities, possibly from different diet that may have led to the attendant adaptive variation in size. It may also be associated with the orientation and size of the muscle fibres which may have genetic and environmental backdrop 19 . The higher values obtained during contraction of the muscle compared to relaxation in this study is consistent with those of previous studies by Egwu et al 19 , Satiroglu et al 20 and Kubota et al 21 This disparity between the values in masseter muscle thickness during relaxation and during maximal clenching (i.e contraction) can be explained by the fact that during the contraction phase, as the mandible is elevated, there is enlargement and thickening of the muscle fibres which may account for the observed higher thickness in the clenched state.…”

Section: Discussionmentioning

confidence: 99%

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Relationship between masseter muscle thickness and overbite values in a Nigerian population

Olabimpe¹,

Olayinka²,

Adebanke³

et al. 2017

Braz. J. Oral Sci.

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Objective: This study determined the relationship between masseter muscle thickness and overbite values among Nigerians. Methods: The subjects included 66 consecutive patients (21 males and 45 females) who presented for fixed orthodontic appliance treatment. Overbite values were measured from standard lateral cephalometric radiographs taken for all patients,who were thereafter divided into three groups of reduced overbite (n=22, mean -1.11+ 2.18mm), normal overbite (n=22, mean 2.59+0.50mm) and increased overbite (n=22, mean 5.21+1.39mm). The masseter muscle thickness of each patient was measured bilaterally using ultrasonography. Associations between masseter muscle thickness and different overbite values were analyzed using unpaired t-test, ANOVA and Tukey's multiple comparison analysis. Results: Mean masseter muscle thickness was 11.23 ± 2.40 mm during relaxation and 12.81 ± 2.64 mm during contraction for study participants. The masseter muscle on the habitual side of mastication of participants was generally thicker but the difference was not statistically significant (P>0.05). There was a progressive increase in masseter muscle thickness from reduced overbite through normal overbite to increased overbite groups and the differences were statistically significant (P<0.01). Tukey's multiple comparisons showed significant differences between all the three overbite groups (P<0.05). Conclusion: There was a direct relationship between the muscle thickness and overbite variations.

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Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Relationship between masseter muscle thickness and overbite values in a Nigerian population

Olabimpe¹,

Olayinka²,

Adebanke³

et al. 2017

Braz. J. Oral Sci.

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“…Most of their patients are obstetric patients and individuals with soft tissue pathologies, including all forms of abdominal pathologies. They also receive patients from all private hospitals in the Abakaliki metropolis, Ogoja Metropolis, Afikpo metropolis, and beyond, as well as those not accommodated in the state Federal Teaching Hospital, Abakaliki, Ebonyi state, Southeast Nigeria [32]. The centre is licensed as the imaging unit of the Department of Anatomy, Faculty of Basic Medical Sciences, Ebonyi State University, Abakaliki, Southeast Nigeria.…”

Section: Study Centrementioning

confidence: 99%

In vivo assessment of the diaphragm in young male healthy adults: occupation-based activity-related differences

Egwu¹,

Bello²,

Njoku³

2014

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Introduction: Very little attention has been paid to the thickness of the diaphragm (DT) as an important aspect of architecture of the respiratory muscle and the possible effect of occupation-related unregulated physical activity on it. Aim of the research: This study aimed at assessing the effect of occupation-based physical activity on the thickness of the thoracic diaphragm. Material and methods: Eighty (80) males between the ages of 18 and 30 years were recruited for the study and divided into two (2) groups: a control group of forty (40) relatively inactive subjects and a quasi-experimental group of forty (40) peasant labourers. The peasant labourers were recruited from a settlement of local craftsmen and motor-mechanic artisans. B-mode ultrasound was used to measure the thickness of the diaphragm (DT). Results: The mean DT of the quasi-experimental group was higher than that of the control group (p > 0.05-not significant), even though the control group presented significantly greater weight and body mass index (p < 0.05) than the age-matched Labourers. Conclusions: These findings indicate that occupation-based unregulated physical activity increases DT and may initiate the setting in of diaphragmatic hypertrophy induced by occupation-associated strength and anaerobic training. The findings will also serve as a guidepost in the biomechanical aspects of the muscle during respiration in our sub-Saharan African population. Streszczenie Wprowadzenie: Do tej pory bardzo niewiele uwagi poświęcano grubości przepony (GP), która jest istotnym elementem architektury mięśni oddechowych, jak również ewentualnemu wpływowi nieregulowanej aktywności fizycznej związanej z wykonywanym zawodem na stan przepony. Cel pracy: Ocena wpływu nieregulowanej aktywności fizycznej związanej z wykonywanym zawodem na grubość przepony. Materiał i metody: Do badania włączono 80 mężczyzn w wieku 18-30 lat. Uczestników podzielono na dwie grupy: grupę kontrolną liczącą 40 mężczyzn o relatywnie niskim poziomie aktywności fizycznej oraz quasi-eksperymentalną grupę dopasowanych wiekiem 40 pracowników fizycznych. Rekrutację pracowników fizycznych na potrzeby badania przeprowadzono wśród miejscowych rzemieślników i mechaników samochodowych. Pomiary GP przeprowadzono metodą ultrasonograficzną w trybie B-mode. Wyniki: Wykazano, że średnia GP w grupie quasi-eksperymentalnej jest większa niż w grupie kontrolnej (p > 0,05-brak istotności statystycznej), mimo że członkowie grupy kontrolnej odznaczali się znacznie większą masą ciała i wskaźnikiem masy ciała (p < 0,05) niż dopasowani wiekiem pracownicy fizyczni. Wnioski: Nieregulowana zawodowa aktywność fizyczna zwiększa GP i może się przyczyniać do przerostu przepony na skutek wysiłku siłowego i anaerobowego związanego z wykonywanym zawodem. Uzyskane wyniki wzbogacają również wiedzę na temat biomechaniki pracy mięśni podczas oddychania w populacji osób z Afryki Subsaharyjskiej.

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“…Without the use of ionizing radiation, US allows an economical method to measure muscle thickness [ 18 - 22 ]. Also, the ultrasound equipment is accurate for soft tissues assessment [ 21 , 23 ]. Therefore, US is a simple technique with a rapid diagnosis, non-invasive and does not use ionizing radiation.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Masseter Muscle Appearance and Thickness in Edentulous and Dentate Patients by Ultrasonography

Mayil¹,

Keser²,

Demir³

et al. 2018

TODENTJ

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Objectives:The purpose of the present study was to examine ultrasonographic appearances of Masseter Muscle (MM) in dentate and edentulous patients without Temporomandibular Disorder (TMD).Materials and Methods: The thickness of the MM in 25 dentate (mean age: 30,68 ± 10,49) and 24 edentulous (mean age: 61,46 ± 9,71) patients, who visited routine dental examination, was measured at rest and at maximum contraction bilaterally. Examinations were performed using an Aloka Prosound α6 (Hitachi Aloka Medical Systems, Tokyo, Japan) equipped with an 8 MHz-wide bandwidth linear active matrix transducer (ranging from 1 to 15 MHz). The visibility and width of the internal echogenic bands of the MM were also assessed and the muscle appearance was classified as I of III types. Type I, characterized by the clear visibility of the fine bands; Type II, thickening echogenicity of the bands; Type III, disappearance or reduction in a number of the bands.Results:MM thickness at rest and contraction in the dentate group were significantly higher than the edentulous group (p <0.05). Type I was the most common echogenic type in both dentate (right:16 (64%), left; 15 (60%)) and edentulous patients (right; 22 (91.7%), left; 18 (75%)). In a dentate group, type II was significantly higher than the edentulous group in both the right and left sides (p <0.05; p <0.01, respectively). Age and gender seemed to have no significant effect on the echogenic type (p ˃0.05).Conclusion:There were significant differences in the thickness at rest and contraction between the dentate and edentulous groups. It was clarified that ultrasonographic features of the MM in dentate and edentulous patients were different.

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Assessment of Masseter Muscle Thickness in an Adult Nigerian Population: An Ultrasound Based Study

Cited by 7 publications

References 12 publications

Relationship between masseter muscle thickness and overbite values in a Nigerian population

Relationship between masseter muscle thickness and overbite values in a Nigerian population

In vivo assessment of the diaphragm in young male healthy adults: occupation-based activity-related differences

Assessment of Masseter Muscle Appearance and Thickness in Edentulous and Dentate Patients by Ultrasonography

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