Masticatory behavior in individuals with temporomandibular disorders

Area of Science:

• Oral and Maxillofacial Surgery
• Biomedical Engineering
• Clinical Dentistry

Background:

• Temporomandibular disorders (TMDs) affect masticatory function.
• Investigating chewing behavior in TMD patients is crucial for understanding the condition.
• Previous research has not fully elucidated the relationship between pain location and chewing patterns.

Purpose of the Study:

• To compare masticatory behavior between TMD patients and a control group.
• To assess the ability of TMD patients to judge chewing difficulties and pain intensity.
• To determine if chewing patterns are solely dictated by pain location.

Main Methods:

• A comprehensive examination protocol was used for TMD assessment.
• Masticatory movements were recorded and analyzed using videocassette.
• A category scale evaluated pain intensity and chewing difficulties in 23 TMD patients and 23 controls.

Main Results:

• TMD patients showed significantly higher prevalence of mouth opening difficulties, unilateral chewing, and general chewing difficulties.
• Bruxism and longer cookie-eating times were more common in TMD patients.
• TMD patients accurately judged their pain and chewing difficulties, with judgments aligning across subgroups.

Conclusions:

• Chewing patterns in TMD patients are complex and not solely determined by pain location.
• Dysfunctional chewing behaviors are prevalent in TMD.
• Patient self-assessment of pain and chewing difficulty is reliable.