Impact of botulinum toxin type A on mandibular bone parameters in bruxism: radiographic evidence from treated, untreated, and healthy individuals.

[OBJECTIVE] This study investigates the effects of botulinum toxin type A (BoNT-A) injections on mandibular bone morphology in bruxism patients through the use of panoramic radiography.

[STUDY DESIGN] Sixty patients were assessed and categorized into three groups: bruxism with BoNT-A injection, bruxism without BoNT-A injection, and healthy controls. Morphological classifications (G0-G3), mandibular angle depth (AMD), antegonial notch depth (AND), and cortical thickness (CT) were evaluated at baseline and after a six-month period.

[RESULTS] The BoNT-A group demonstrated substantial decreases in G2 and G3 categories and enhancements in cortical thickness relative to noninjected and control groups (P < .05). However, no significant alterations were detected in AND values.

[CONCLUSION] The data indicate that BoNT-A diminishes problematic mandibular bone apposition and facilitates cortical remodeling by decrease excessive occlusal stresses. Panoramic radiographs can function as an effective instrument for both diagnosing bruxism and assessing treatment results.