Related Experiment Video
Updated: Aug 26, 2026

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
Published on: April 26, 2024
Psychological variables and personality traits associated with awake and sleep bruxism: A cross-sectional study
1Department of Oral & Maxillofacial Surgery, Faculty of Dentistry, Kafrelsheikh University, Kafrelsheikh, Egypt.
Objectives:
Previous studies addressed the relationship between developing bruxism and personality traits yielded relatively inconsistent results. Therefore, this study aimed to investigate this relationship.
Methods:
117 underwent psychological testing to assess trait anxiety, state anxiety, anger, and depression using STAI-T (State-Trait Anxiety Inventory (trait)), STAI-S (State-Trait Anxiety Inventory (state)), STAXI (State-Trait Anger Expression Inventory), and BDI-II (Beck Depression Inventory test). Personality trait was identified using the 20-item Big Five personality trait questionnaire. Awake bruxism (AB) and sleep bruxism (SB) were identified using electromyography and polysomnography, respectively, excluding participants with psychiatric distress.
Results:
SB was associated with anxiety trait, whereas, AB was associated with state anxiety and depression. Moreover, AB was associated with neurotic personality, whereas SB was associated with conscientiousness.
Conclusion:
The findings suggest that AB and SB may present different psychological and personality-related profiles. However, longitudinal studies are needed to clarify whether these associations have etiological or clinical relevance.
Related Concept Videos
Primary Motives: Sleep, Sex, and Pain Avoidance
Sleep is a fundamental physiological drive that fosters a state of restfulness crucial for several bodily functions. It facilitates body restoration, the process by which the body repairs, rejuvenates, and maintains itself during sleep, including memory...
Psychodynamic Perspectives on Personality
Psychodynamic theorists argue that unconscious...
Introduction to Personality Psychology
Early Theories of Personality
The study of personality dates...
Traits, Mood, and Subjective Wellbeing
Neuroticism and Emotional...
