The dependence of mandibular dysfunction in children on functional and morphologic malocclusion

Area of Science:

• Pediatric Dentistry
• Craniofacial Biology
• Dental Public Health

Background:

• Mandibular dysfunction is a complex condition in children.
• Understanding its multifactorial etiology is crucial for effective intervention.

Purpose of the Study:

• To investigate the influence of dental status, occlusal factors, and background variables on bruxism and signs of mandibular dysfunction in children.
• To differentiate the impact of functional versus morphologic malocclusion.

Main Methods:

• Study included three age groups of children (7, 11, 15 years).
• Analyzed interrelations using rank-correlation and stepwise multiple regression.
• Assessed dental wear, occlusal interference, anomalies, bruxism, and clinical signs of dysfunction.

Main Results:

• Dental wear and age significantly correlated with dysfunction variables.
• Bruxism showed no significant correlation with independent variables.
• Subjective symptoms were partly explained by dental wear and sucking habits.
• Headache linked to age and sex; TMJ clicking increased with age and was more common in girls.
• Clinical dysfunction and muscle tenderness were influenced by age, occlusal interference, motor activity, and psychological factors.
• Functional malocclusion was more critical than morphologic malocclusion for dysfunction.

Conclusions:

• Mandibular dysfunction in children has a multifactorial etiology.
• Functional malocclusion is a significant factor, with morphologic malocclusion potentially predisposing when combined.
• Age, dental wear, habits, and psychological factors contribute to the complexity of pediatric mandibular dysfunction.