A study conducted by researchers at the University of Málaga found an association between children’s footprints and their bites. The results reveal that 50% of those who show mandibular prognathism (positional relationship of the mandible to the skeletal base where the jaws protrudes beyond a predetermined imaginary line in the coronal plane of the skull) also present a type of pronated footfall (foot inward-rotation that occurs during foot landing to distribute the impact).
The research conducted by a group called ‘PODUMA’, specialized in child chiropody, analysed about 200 schoolchildren from six to nine years.
“We also detected that 100% of the children who had a pronated foot were related to mandibular protrusion,” says Gabriel Gijón, expert on foot biomechanics and professor at the University of Málaga.
The experts, who have dedicated five years to this research project, studied in a first phase two podiatric variables from a system of measurements: the postural index of the foot and the angle of the footprint.
Another of the conclusions, published in the journal Medecin, was the finding of a lower prevalence of this relationship in children with mandibular retrusion.
Starting point for more studies
This work goes a step further because until now, in dentistry, jaw prognathism had been associated with the lower back. However, as the authors claim, it is a starting point to which the analysis of other extremities could be added or, even, other hypotheses could be formuated. For example, the problem may be addressed oppositely, from the jaw to the feet, Guijón explains.
Transfer this study to adolescents and adults and advance in the scientific field, from a clinical trial, are the next steps. “We are interested in knowing to what extent the treatment of one of these two alterations would condition the other,” explains Gijón.