ArticleInternational journal of dentistry2025
Quantitative Assessment of Temporomandibular Joint Space in Bruxers: A Cross-Sectional Radiographic Study.
Article in International journal of dentistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Bruxism is a parafunctional habit that can lead to significant dental and musculoskeletal complications. Chronic bruxism may impose excessive and abnormal mechanical loads on the temporomandibular joint (TMJ), potentially altering joint morphology and joint space dimensions. These changes can be subtle and asymptomatic initially, but they may progress to disorders such as disc displacement, joint pain, and functional limitations. Radiographic evaluation of TMJ space, particularly through advanced imaging modalities such as cone beam computed tomography (CBCT), offers a noninvasive means of quantifying joint space alterations. However, the relationship between bruxism and TMJ space narrowing or asymmetry remains inadequately understood, with inconsistent findings across existing literature. Objective: To quantitatively evaluate the TMJ space in individuals with bruxism using CBCT and compare findings with matched nonbruxer controls. Methods: A cross-sectional study was conducted on 75 patients clinically diagnosed with bruxism (age 20-45 years, 36 males, 39 females). CBCT scans were analyzed to measure anterior joint space (AJS), superior joint space (SJS), and posterior joint space (PJS) bilaterally. Data were compared to normative values from 30 age- and sex-matched nonbruxers. Independent Results: Bruxers demonstrated a significantly reduced SJS (2.73 ± 0.39 mm) and increased PJS (3.29 ± 0.44 mm) compared to nonbruxers (3.16 ± 0.34 mm and 2.80 ± 0.37 mm, respectively) on CBCT analysis ( Conclusion: The present study demonstrated that bruxers exhibit significantly increased posterior and reduced SJS dimensions compared to nonbruxers, indicating early condylar positional alterations detectable on CBCT that may aid in timely diagnosis and prevention of symptomatic temporomandibular joint disorders.
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