Reconstruction plates used in the surgery for mandibular discontinuity defect

Abstract

ObjectivesThe purpose of this study was to analyze the survival rate of reconstruction plates that were used to correct mandibular discontinuity defects.Materials and MethodsWe analyzed clinical and radiological data of 36 patients. Only discontinuous mandibular defect cases were included in the study. Reconstruction plate survival rate was analyzed according to age, gender, location of defect, defect size, and whether the patient underwent a bone graft procedure, coronoidectomy, and/or postoperative radiation therapy (RT).ResultsPlate-related complications developed in 8 patients, 7 of which underwent plate removal. No significant differences were found in plate survival rate according to age, gender, location of defect, defect size, or whether a bone graft procedure was performed. However, there were differences in the plate survival rate that depended on whether the patient underwent coronoidectomy or postoperative RT. In the early stages (9.25±5.10 months), plate fracture was the most common complication, but in the later stages (35.75±17.00 months), screw loosening was the most common complication.ConclusionIt is important to establish the time-related risk of complications such as plate fracture or screw loosening. Coronoidectomy should be considered in most cases to prevent complications. Postoperative RT can affect the survival rate and hazard rate after a reconstruction plate is fitted.

Feasibility of carbon‐ion radiotherapy for oral non‐squamous cell carcinomas

“…However, radiation exposure compromises the integrity of the recipient vessels and negatively affects free flap viability, with both preoperative and postoperative radiotherapy being associated with increased flap complication rates . Furthermore, plate reconstruction after RT is also associated with many late complications, and Seol et al have reported a significant decrease in the success of plate reconstruction among patients who underwent postoperative RT . In the present study, plate failure occurred in 1 of 3 patients who underwent mandibular bone reconstruction, which suggests that plate‐based mandibular bone reconstruction may have limited effectiveness and should be carefully considered after C‐ion RT.…”

“…21 Furthermore, plate reconstruction after RT is also associated with many late complications, and Seol et al have reported a significant decrease in the success of plate reconstruction among patients who underwent postoperative RT. 22 In the present study, plate failure occurred in 1 of 3 patients who underwent mandibular bone reconstruction, which suggests that plate-based mandibular bone reconstruction may have limited effectiveness and should be carefully considered after Cion RT. Nevertheless, the patient who experienced reconstruction failure had successful soft tissue transplantation without any major complications and preserved masticatory and deglutitive functions (because of the soft-tissue free flap and prosthesis).…”

Plate-related complications after mandibular reconstruction: observational study osteotomy

“…The success rate of mandibular reconstruction has increased because of improvements in plate designing and materials. However, plate-related complications still develop frequently and can sometimes cause serious problems to patients [12].…”

Procedure for Creating Personalized Geometrical Models of the Human Mandible and Corresponding Implants

“…Reconstruction plates are provided in straight and slightly thicker and stiffer pre-curved lengths. They have oval screw holes, like mentioned compression plates, and they allow potential limited compression [22,23]. To create so-called personalized geometrical models of the plates, which fit anatomy of the traumatized region of the mandible, there is a need to use geometrical model of the patient's mandible as a base model that shape of plate should follow [24].…”