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Published on: May 23, 2020
Use of rectangular grid miniplates for fracture fixation at the mandibular angle
Eduardo Hochuli-Vieira1, Thi Khanh Linh Ha, Valfrido Antonio Pereira-Filho
1Department of Oral and Maxillofacial Surgery, Dental School at Araraquara, São Paulo State University, Araraquara, Brazil.
Summary
This study shows that intraoral miniplate fixation is a stable and cost-effective treatment for mandibular angle fractures, with low complication rates. Careful patient selection is key for optimal outcomes.
Area of Science:
- Oral and Maxillofacial Surgery
- Trauma Surgery
- Biomaterials in Surgery
Background:
- Mandibular angle fractures are common facial injuries.
- Treatment aims to restore function and aesthetics.
- Intraoral access offers advantages in certain fracture types.
Purpose of the Study:
- To evaluate the clinical outcomes of mandibular angle fractures treated with intraoral access and a specific miniplate system.
- To assess the stability and complication rates associated with this surgical technique.
Main Methods:
- A cohort of 45 patients with mandibular angle fractures were treated.
- Intraoral approach using a 2.0-mm rectangular grid miniplate and monocortical screws.
- Postoperative clinical evaluations at multiple time points up to 6 months.
Main Results:
- Low infection rate (4.44%) and minor occlusal changes (6.66%) were observed.
- Temporary or persistent hypoesthesia of the inferior alveolar nerve occurred in some patients.
- Hardware replacement was needed in one case with a concomitant mandibular body fracture.
Conclusions:
- The rectangular grid miniplate provides stable fixation for simple mandibular angle fractures via intraoral access.
- The technique demonstrates ease of handling, adjustment, and cost-effectiveness.
- Concomitant fractures and insufficient interfragmentary contact may increase complication risks.
