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Objectives <p>***This study evaluated the long-term changes in temporomandibular joint (TMJ) function following mandibular reconstruction using a pre-bent plate.</p> Methods <p>This prospective case series included 19 patients who underwent mandibular reconstruction with pre-bent reconstruction plates. Patient’s occlusion and mandibular range of motion were recorded and compared pre- and postoperatively. Postoperative temporomandibular joint function was assessed using the Helkimo Clinical Dysfunction Index.</p> Results <p>Mean follow-up duration was 8 ± 4.4&#xa0;months. 89.5% of patients exhibited a degree of TMJ dysfunction, with an average Helkimo score of 4.5 ± 3.1. The mandibular range of motion tended to decrease postoperatively, with statistically significant reductions observed in maximum mouth opening and protrusion (<i>p</i> &lt; 0.05, paired <i>t</i>-test). 73.7% of patients achieved a stable and reproducible occlusion in the remaining teeth at the follow-up.</p> Conclusion <p>Mandibular reconstruction with pre-bent plates is associated with mild to moderate TMJ dysfunction, characterized by a reduced range of motion and pain during movement. Alterations in the mandibular range of motion and occlusion were more prevalent in patients with extensive defects.</p>

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Temporomandibular Joint Functional Changes Following Mandibular Reconstruction Using Pre-bent Plate: A Prospective Case Series

  • 期刊论文

  • 发表日期：

    2025年12月8日

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  • Doan Cao Quoc Duy,
  • Nguyen Van Lan,
  • Lam Hoai Phuong

摘要

Objectives

***This study evaluated the long-term changes in temporomandibular joint (TMJ) function following mandibular reconstruction using a pre-bent plate.

Methods

This prospective case series included 19 patients who underwent mandibular reconstruction with pre-bent reconstruction plates. Patient’s occlusion and mandibular range of motion were recorded and compared pre- and postoperatively. Postoperative temporomandibular joint function was assessed using the Helkimo Clinical Dysfunction Index.

Results

Mean follow-up duration was 8 ± 4.4 months. 89.5% of patients exhibited a degree of TMJ dysfunction, with an average Helkimo score of 4.5 ± 3.1. The mandibular range of motion tended to decrease postoperatively, with statistically significant reductions observed in maximum mouth opening and protrusion (p < 0.05, paired t-test). 73.7% of patients achieved a stable and reproducible occlusion in the remaining teeth at the follow-up.

Conclusion

Mandibular reconstruction with pre-bent plates is associated with mild to moderate TMJ dysfunction, characterized by a reduced range of motion and pain during movement. Alterations in the mandibular range of motion and occlusion were more prevalent in patients with extensive defects.