Temporomandibular disorders and bruxism. Part I

Area of Science:

• Dentistry
• Biomedical Engineering
• Physiology

Background:

• The stomatognathic system integrates teeth, periodontium, muscles, temporomandibular joint (TMJ), and CNS for coordinated function.
• Disruptions in any part of this complex system can cascade, affecting other components.
• Functional changes may stem from organic issues or iatrogenic causes like inadequate dental therapies.

Purpose of the Study:

• To explore the intricate relationships within the stomatognathic system.
• To understand the origins and progression of functional disorders in the stomatognathic system.
• To highlight the challenges in identifying primary causes and the need for comprehensive treatment strategies.

Main Methods:

• Literature review of the stomatognathic system's functional determinants.
• Analysis of adaptive mechanisms and tissue responses (ortho- and parafunctional) to disorders.
• Examination of etiological factors contributing to parafunctional activity, including occlusion and psychological influences.

Main Results:

• Disorders in one part of the stomatognathic system lead to disturbances in others.
• Initial responses to dysfunction involve adaptive mechanisms, escalating to prominent symptoms.
• Parafunctional activity is linked to altered occlusion, psychological habits, and specific tissue responses.

Conclusions:

• Identifying the primary cause of stomatognathic dysfunction is challenging due to interconnectedness.
• Parafunctional activity arises from a combination of occlusal changes, psychological factors, and tissue responses.
• Effective therapy for these disorders necessitates a multidisciplinary approach.