A clinical study on the effect of electric stimulation on segment transfer distraction osteogenesis for mandibular reconstruction

Abstract

Background:

Distraction osteogenesis represents a challenging technique for reconstruction of segmental bone defects. There are no available clinical studies to correlate the effect of electrical current application with mandibular distraction. Aim of the study:

The purpose of this study was to evaluate the effect of electrical current stimulation on the distracted bone formed by the transport disc distraction device in the reconstruction of human mandibular defects. Patient and methods:

This study was conducted on two groups of adult patients who had undergone reconstruction of mandibular segmental defects after surgical removal of ameloblastomas. The reconstruction was attempted using segment transfer distraction devices. In the first group, an electrical stimulation device was used, whereas in the control group it was not used. After a latency period of 7 days, activation of 2 mm/day was carried out, which was followed by a consolidation period of 7 weeks. The device was used throughout the latency, activation and consolidation periods. Bone density measurements using Grey scale analysis were used to evaluate its effect. Results:

Radiographic assessments indicated an increase in the maturation of the newly formed bone along the distraction process – that is, bone densities at the end of consolidation and in the first year. Conclusion:

Adjunctive application of electric current with a segment transfer distraction device has a positive role in enhancing bone formation during distraction osteogenesis and would allow a faster rate of distraction.