# Effectiveness of Single Miniplate Fixation for Mandibular Symphysis and Parasymphysis Fractures: A Clinical Study

## TL;DR

This study shows that using one miniplate with an arch bar can effectively and affordably treat certain jaw fractures, reducing risks and costs compared to traditional methods.

## Contribution

The study introduces a simplified, cost-effective single miniplate technique for mandibular fractures with an arch bar as a tension band.

## Key findings

- Single miniplate fixation with an arch bar provided satisfactory outcomes with no major complications.
- The technique reduced hardware costs, benefiting patients in low-resource settings.
- Neurosensory complications were minimal and comparable to standard dual-plate methods.

## Abstract

Introduction

Symphysis and parasymphysis fractures are common in maxillofacial trauma, requiring precise management to restore form, function, and aesthetics. While Champy’s technique recommends two miniplates - superior and inferior - for optimal stability, placing a superior plate in the canine-premolar region risks damaging dental roots and neurovascular structures. Additionally, the cost of dual plating may be a burden in low-resource settings. This study evaluates the efficacy of a single miniplate at the inferior border, aided by an arch bar as a tension band, for managing these fractures.

Methods

This prospective clinical study included 15 patients presenting with isolated mandibular symphysis or parasymphysis fractures. All fractures were managed using a single 2.5 mm miniplate along the inferior mandibular border, with an arch bar serving as a tension band across the dental arch. Patients were evaluated postoperatively for the incidence of surgical site infection, wound dehiscence, malunion or nonunion, malocclusion, miniplate fracture, and neurosensory deficits. Cost implications related to avoiding the use of a second miniplate were also analyzed. Follow-up was conducted for a minimum of four weeks postoperatively.

Results

The study observed that single miniplate fixation in combination with an arch bar provided satisfactory clinical outcomes in most cases. There were no significant incidences of postoperative infection, plate fracture, or malocclusion. Neurosensory complications were minimal and comparable to standard dual-plate protocols. Importantly, the reduction in hardware usage translated to lower overall treatment costs, offering a substantial benefit for patients from economically constrained backgrounds.

Conclusion

Single miniplate fixation along the inferior border of the mandible, when augmented with a tension band in the form of an arch bar, appears to be a reliable and cost-effective alternative for the management of symphysis and parasymphysis fractures. This technique minimizes iatrogenic risk to adjacent anatomical structures and offers a financially feasible solution, particularly in low-resource settings. Larger randomized controlled studies are recommended to further validate these findings and support broader adoption of this simplified approach in clinical practice.