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ORIGINAL ARTICLE
Year : 2017  |  Volume : 7  |  Issue : 1  |  Page : 44

Masseter muscle thickness in unilateral partial edentulism: An ultrasonographic study


1 Department of Oral Medicine and Radiology, Sri Ramachandra Medical College and Research Institute, (Deemed to be University), Chennai, Tamil Nadu, India
2 Department of Radiology and Imaging Sciences, Sri Ramachandra Medical College and Research Institute, (Deemed to be University), Chennai, Tamil Nadu, India
3 Department of Interns, Faculty of Dental Sciences, Sri Ramachandra Medical College and Research Institute, (Deemed to be University), Chennai, Tamil Nadu, India

Correspondence Address:
Dr. S Sathasivasubramanian
No. 1, Sri Ramachandra Nagar, Porur, Chennai - 601 116, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jcis.JCIS_50_17

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Introduction: Teeth and facial muscles play a very important role in occlusal equilibrium and function. Occlusal derangement, seen in unilateral partially edentulous individuals, has an effect on masseter muscle anatomy and function. The present study aims to evaluate masseter muscle thickness in unilateral partial edentulism. Patients and Methods: Institutional ethics committee approval was obtained before the commencement of the study. The study involved patients who routinely visited the Department of Oral Medicine and Radiology, Sri Ramachandra University. The study sample included 27 unilateral edentulous patients (Group E) and 30 controls (Group C). The masseter muscle thickness was evaluated using high-resolution ultrasound real-time scanner (linear transducer − 7.5–10 MHz) at both relaxed and contracted states. Statistical Analysis Used: The results were analyzed using paired t-test and independent t-test. Duration of edentulism and muscle thickness was assessed using Pearson's correlation coefficient. Results: The study patients' age ranged between 25 and 48 years (mean – 36 years). The comparative evaluation of masseter muscle thickness between the dentulous and edentulous sides of experimental group was statistically significant (P < 0.05). However, no statistically significant difference in masseter muscle thickness was found between the dentulous side of control and experimental groups. The correlation between the duration of partial edentulism and muscle thickness was statistically insignificant. Conclusion: The study proves masseter atrophy in the edentulous side. However, since the difference is found to be marginal with the present sample, a greater sample is necessary to establish and prove the present findings as well as to correlate with the duration of edentulism. Further studies are aimed to assess the muscle morphology after prosthetic rehabilitation.


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