Abstract
To evaluate the bone healing of mandibular fractures following the use of Portland cement. Thirty-two male Wistar rats were divided into control and experimental groups. In the control group the rats were submitted to a mandibular fracture, which was reduced, and the soft tissues were sutured. In the experimental group the rats had the mandibular fracture reduced and maintained with the Portland cement. The animals were euthanized 7 and 21 days after surgery by injecting a lethal dose of anesthetic. The following variables were studied: weight of the animals, radiographic images, histopathological features and time of surgery. A weight loss was observed in the specimens of both groups at the different times of evaluation, a greater difference in weight before and after surgery being found in the experimental group, which was statistically significant (p <0.05, p = 0.041). From the histological point of view, with a margin of error (5.0%) the only two significant differences (p <0.05) recorded in the variables were "Material deployed" and "Bone resorption" during the evaluations at 7 and 21 days, respectively. The Portland cement served to promote bone healing.
Highlights
The treatment of facial fractures ranges from follow-up, maxillomandibular immobilization by locking wire and/or rubber bands to direct fixation of the fracture with titanium plates or the use of resorbable materials to keep the fractured bone reduced and fixed to enable bone healing to occur
The stable internal fixation with plates and screws or titanium screws is widely used for the treatment of various types of fractures and its success has not been called into question[3]
Stable internal fixation has some disadvantages, in particular the need to remove the material after the phase of bone repair in some cases and the need for targeted training in its use in others, as well its high cost
Summary
The treatment of facial fractures ranges from follow-up, maxillomandibular immobilization by locking wire and/or rubber bands to direct fixation of the fracture with titanium plates or the use of resorbable materials to keep the fractured bone reduced and fixed to enable bone healing to occur. Stable internal fixation has some disadvantages, in particular the need to remove the material after the phase of bone repair in some cases and the need for targeted training in its use in others, as well its high cost In view of these drawbacks, new materials, or even ones already tested in other areas of health, should be evaluated and developed to fill this gap in the treatment of mandibular fractures. The present study sought for a new alternative for treating mandibular fratures that could induce the healing of such fractures using Portland cement as an adjuvant material for fracture fixation
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