Akademik Veri Yönetim Sistemi
European annals of dental sciences (Online), cilt.52, sa.3, ss.156-160, 2025 (TRDizin)
Purpose: This study aimed to compare the ultrasonographic (USG) characteristics of masseter muscle thickness and internal structure among female bruxism patients from two different nationalities.
Materials and Methods: A total of 60 female patients with bruxism (30 Turkish and 30 Syrian), aged between 18 and 25, were included in the study. Measurements were taken with USG on both sides of each patient, both at rest and at maximum contraction, based on the distances from the center of the distance between the zygomatic arch and the gonial angle, parallel to the occlusal plane, and from the center of the mediolateral distance of the ramus, perpendicular to the ramus. The internal structure of the masseter muscle was classified according to the visibility of echogenic bands. Gonial and antegonial angles were measured on panoramic radiographs (PR).
Results: A total of 60 female patients (mean age 22.2 ± 1.21 years) were evaluated. In the measurement of the masseter muscle at relaxation, it was determined that there was no statistically significant difference between the right and left (p=0.919) and between nationalities (p=0.465). In the measurement of the masseter muscle at clenching, it was determined that there was no statistically significant difference between the right and left (p=0.745) and between nationalities (p=0.235). When the distribution of the internal structure of the masseter muscle was compared on the right and left sides separately for both nationalities, no significant difference was found (p=0.215 and p=0.310, respectively). In the gonial angle measurement in PR, there was no statistically significant difference between the patients on the right and left sides (p=0.898) and between nationalities (p=0.101). In the antegonial angle measurement in radiographs, there was no statistically significant difference between the patients on the right and left sides (p=0.714) and between nationalities (p=0.235).
Conclusions: USG provides a radiation-free modality for evaluating changes in the masseter muscle. However, variations in masseter muscle thickness, internal structure, and mandibular angles between nationalities were not statistically significant.